Series CV 110 - Hydraulic Distributors · Series CV 110 Directional Control Valve 4 General...

Series CV 110Directional Control Valve

3

Contents

General Information

Technical Data

Spool Options

Performance Curves

Assembly Dimensions

Accessories

Order Code

Page 4

Page 5

Page 6-8

Page 9

Page 10-12

Page 13

Page 14


4

General Information

The CV 110 open valve is a parallel circuit valve which is designed to operate with a fixed pump in open center hydraulic systems up to pressures of 320 bar (4600 psi) and flow rates of up to 50 l/min (13 USgpm).

The CV 110 on demand LS version is a valve which is designed to operate with a variable pump and in closed center systems up to a pressure of 320 bar (4600 psi) and flow rates of up to 50 l/min (13 USGpm).

The CV 110 valve series offers the OEM the selection of a number of spools for optimal spool control at any load as well as a wide range of spool controls for different applications.

Some of the CV 110’s main advantages are :

l Available from 1 to 6 sections as a monoblock valve

l Main relief valve

l Load check valves for each section

l Open & closed center option

l Direct acting relief valve for quick response time

l Power Beyond capability

l Exceptionally low spool leakage, less than 0.12 in³ (2 cm³) /min at 46 cSt and

100 bar (1500 psi) and 40°c upon request

l Float, regenerative and specially tuned spools

l Full range of spool controls : joystick, pneumatic, hydraulic, electro-hydraulic

proportional EHP and direct-acting solenoid (12VDC & 24VDC)

BSP and SAE threads are standard and the following threads can be supplied upon request :

l Metric

l NPTF


5

Technical Data

Max pressure setting

Main relief valveTank Line

Flow rates

Max flow A/B

Temperature range

Standard seals

Spool leakage at

100 bar (1450 psi) and 46mm²/s (cSt)216 SSU viscosity A and B port

Filtration

Contamination level equal to or better then

Viscosity

Recommended operatingviscosity rangeStart viscosity up to

Weight

CV 111CV 113CV 114CV 115CV 116

Operating force required for spool movement

Spring centeredDetent inDetent out

Number of work sections

bar

32010

l/min

50

°C

-40 to +80

cm³/min

2

19/16 according to ISO 4406

mm²/s (cSt)

10-4001000

kg

3,26,68,310,011,7

N

130230200

1 to 6

psi

4600145

USgpm

13

°F

-40 to +176

inch³/min

0.12

NAS 1638-class 10

SSU

47 - 18754687

lbs

7,114,618,322,025,7

lbf

295245


6

Spool Options

A-B G ⅜ 9/16-18 (SAE 6) M16x1.5

Inlet

Port sizes BSP UNF Metric

Tank

Cylinder ports

P1 G ⅜ ¾-16 (SAE 8) M18x1.5 P2 G ⅜ ¾-16 (SAE 8) M18x1.5 P3 G ⅜ ¾-16 (SAE 8) M18x1.5

T1 G ½ ⅞-14 (SAE 10) M22x1.5 T1 G ⅜ ¾-16 (SAE 8) M18x1.5 T2 G ⅜ ¾-16 (SAE 8) M18x1.5

STANDARD THREADS

A B

P TA B

P T

A B

P T

A B

P T

A B

P T

A B

P T

A B

P TA B

P TA B

P T

Part No. Spool type Type Symbol SP-No.

10573-3B 2SA SP-10573-3B

10574-3B 2XA Single acting A port SP-10574-3B

10309-3B 3X DA + float SP-10309-3B

10308-3B 3S SP-10308-3B

10307-3B 3R SP-10307-3B

10575-3B 4X Motor spool SP-10575-3B

10576-3B 4S SP-10576-3B

10310-3B 8R SP-10310-3B

10311-3B 8S SP-10311-3B

DA + floatwith metering


Motor spoolwith metering

DA + regenwith metering

DA + regen with metering

SPOOL FOR OPEN CENTERED VALVES

Single acting A portwith metering

10709-3B 1S SP-10709-3BDAwith metering

A B

P T


7

Spool Options

Closed Center LS Open Center

A B

P T

A B

P T

A B

P T

A B

P T

A B

P T

A B

P T


10577-3B 2RALS SP-10577-3B

10578-3B 2SALS SP-10578-3B

10548-3B 3RLS SP-10548-3B

10549-3B 3SLS SP-10549-3B

10551-3B 8SLS SP-10551-3B

10550-3B 8RLS SP-10550-3B



SPOOLS FOR LOAD SENSING OPTION

Single actingwith metering




11590-3B 1SLS SP-11590-3BDAwith metering

A B

P T


8

Spool Options

[1.19]30.1 M8x1.25

M8x

125

53[2

.09]

64[2

.52]

[2.05]52

[2.00]50.8

[1.3

0]33

[3.23]82

[3.86]98

45.8[1.80]

[2.32]59

Code A-sideType B-side CodeType

9

11

13

S5

S6

W

Spring centered.

Detent in pos.1,2 and 3

Spring centered. Detent in pos.4

Spring centered. Detent in pos.

3 and 4

Spring centered. Detent in position

2 and 4

Pneumatic on/off

Electropneumatic on/off.

12V/270mA alt.24V/150mA.

Hirschmann connector is standard.

Other connectors are available on request.

Hand lever.Encased

Mechanical joystick for dual-spool

control.

Wire control

P

EP

5



Spring centered. Pressure point in

pos.5

10

12

14

18

PP Pneumatic proportional

Cylinder ports facing up

Cylinder ports facing down


9

Performance Curves


10

Assembly DimensionsValve with Encased Hand Lever (S5) CV 110 Assembly Dimensions

- 11 -

Valve withEncased Hand Lever


11

Assembly DimensionsValve with Mechanical Joystick (JS)


12

Assembly DimensionsValve with Electro-Hydraulic Proportional Spool Control


13

Accessories

High pressure carry-over adapter, should be installed in the T1-port when two or morevalves are used in the same circuit. T2 mustthen be connected to Tank

Tank port reduction adapter, can be installed in the T1-port when the thread size is to be reduced.

Part No.10534-4S Type BSP ½″ to BSP ⅜″Part No.10348-4S

Part No.10536-4S SAE # 10 to SAE # 8Part No.10349-4S

Standard Lever :

Other lengths on request.

Part No. 10347-4S

Lever


14

Order Code


3

Contents

General Information

Technical Data

Spool Options

Main Relief Valves and Secondary Valves

Spool Controls

Performance Curves

Assembly Dimensions

Accessories

Order Code

Page 4

Page 5

Page 6-8

Page 9

Page 10-11

Page 12

Page 13

Page 14


4

General Information

The CV 126 open valve is a parallel circuit valve which is designed to operate in open center hydraulic systems up to pressures of 320 bar (4600 psi) and flow rates of up to 50 l/min (13 USgpm).

The CV 126 on demand LS version is a valve which is designed to operate with a variable pump and in a closed center system up to a pressure of 320 bar (4600 psi) and flow rates up to 50 l/min (13 USgpm).

The CV 126 valve serie offers the OEM the selection of a number of spools for optimal spool control at any load as well as a wide range of spool controls for different applications.

Some of the CV 126’s main advantages are :

l 6 sections in a monoblock configuration

l Load check valves for each section

l Open & closed center option

l Direct acting main relief valve for fast response time

l Power Beyond capability

l Available with 4th position float spool

l Available with 4th position regenerative spool

l Direct acting joysticks with integrated 4th position for both float and regenerative functions

The CV 126 valve can be equipped with the following differential or pilot operated relief valve functions:

l Main relief valve

l Cylinder port relief valve

l Combined cylinder port relief and anti-cavitation valve

BSP and SAE threads are standard and the following threads can be supplied upon request:

l Metric

l NPTF (SAE>NPT adaptor)


5

Technical Data

Max pressure setting

Main relief valveTank Line

Flow rates

Max flow A/B

Temperature range

Standard seals

Spool leakage at

100 bar (1450 psi) and 46mm²/s (cSt)216 SSU viscosity A and B port

Filtration


Viscosity

Recommended operatingviscosity rangeStart viscosity up to

Weight

CV 126

Operating force required for spool movement


Number of work sections

bar

32010

lpm

50

°C

-40 to +80

cm³/min

2


mm²/s (cSt)

10-4001000

kg

14

N

130230200

6

psi

4600145

USgpm

13

°F

-40 to +176

inch³/min

0.12

NAS 1638-class 10

SSU

47 - 18754687

lbs

31

lbf

295245


6

Spool Options

Open Center

A B

P TA B

P T

A B

P T

A B

P T

A B

P T

A B

P T

A B

P TA B

P TA B

P T


10573-3B 2SA SP-10573-3B

10574-3B 2XA Single acting A port SP-10574-3B

10309-3B 3X DA + float SP-10309-3B

10308-3B 3S SP-10308-3B

10307-3B 3R SP-10307-3B

10575-3B 4X Motor spool SP-10575-3B

10576-3B 4S SP-10576-3B

10310-3B 8R SP-10310-3B

10311-3B 8S SP-10311-3B



Motor spoolwith metering


DA + regen with metering

SPOOL FOR OPEN CENTERED VALVES

Single acting A portwith metering

10709-3B 1S SP-10709-3BDAwith metering

A B

P T


7

Spool Options

A-B G ⅜ 9/16-18 (SAE 6) M16x1.5

Inlet

Port sizes BSP UNF Metric

Tank

Cylinder ports

P1 G ⅜ ¾-16 (SAE 8) M18x1.5

P2 G ⅜ ¾-16 (SAE 8) M18x1.5

P3 G ⅜ ¾-16 (SAE 8) M18x1.5

T1 G ½ ⅞-14 (SAE 10) M22x1.5

T2 G ⅜ ¾-16 (SAE 8) M18x1.5

T3 G ⅜ ¾-16 (SAE 8) M18x1.5

STANDARD THREADS

A B

P T

A B

P T

A B

P T

A B

P T

A B

P T

A B

P T


10577-3B 2RALS SP-10577-3B

10578-3B 2SALS SP-10578-3B

10548-3B 3RLS SP-10548-3B

10549-3B 3SLS SP-10549-3B

10551-3B 8SLS SP-10551-3B

10550-3B 8RLS SP-10550-3B



SPOOLS FOR LOAD SENSING OPTION





11590-3B 1SLS SP-11590-3BDAwith metering

A B

P T


8

Spool Options

[1.19]30.1

M8x1.25

M8x

125

53[2

.09]

64[2

.52]

[2.05]52

[2.00]50.8

[3.86]98

45.8[1.80]

[2.32]59


9

11

13

S5

S6

W

Spring centered.

Detent in pos.1,2 and 3


Spring centered. Detent in pos.

3 and 4

Spring centered. Detent in position

2 and 4

Pneumatic on/off

Electropneumatic on/off.

12V/270mA alt.24V/150mA.

Hirschmann connector is standard.

Other connectors are available on request.

Hand lever.Encased

Mechanical joystick for dual-spool

control.

Wire control

P

EP

5



Spring centered. Pressure point in

pos.5

10

12

14

18

PP Pneumatic proportional

For different Joystick configuration including Float and Regen functions please see page 10 and 11.

[1.3

0]33

[3.23]82


9

Main relief valve. Differential operated relief valve for the main circuit. Fixed pressure setting.

Cylinder port mounted secondary valves.Relief valve. Differential operated port relief valve preventing pres-sure peaks. Fixed pressure setting.

Anti-cavitation valve. Check valve used to level negative pressures that can occur in the cylinder ports.

All cylinder port valves are mounted on the opposite side of the port used.

Main Relief Valve & Secondary Valve

Relief anti-cavitation valve. Works as both port relief and anti-cavitation valve.

Graphs valid for 25 mm²/s (cSt)(117 SSU) and 70 ba (1000 psi)

Order code: A

Order code: CA+pressure setting

Order code: C+pressure setting

Order code: RV+pressure setting


10

Spool Controls

I

IV

II

III

I

IV

II

III

PORTS UP PORTS DOWN

1. Check port/hose orientation

Ports up

Ports down

3. Valve mounting holes

Through casting holes Threaded bottom holes

2. Fill in functions (handwrite)

Lift

Lower

Float

Curl in

Curl out

Regen

Please fill in corresponding Roman numerals

Joystick Specification - Horizontal mounting


11

Spool Controls

PORTS LEFT PORTS RIGHT

1. Check port/hose orientation

Ports left

Ports right

3. Valve mounting holes

Through casting holes Threaded bottom holes

2. Fill in functions (handwrite)

Lift

Lower

Float

Curl in

Curl out

Regen

Please fill in corresponding Roman numerals

I

IVIII

II

I

IV

II

III

Joystick Specification - Vertical mounting


12

Performance Curves


13

Assembly DimensionsValve with a combination of Mechanical Joystick and Encased Hand Lever


14

Accessories

CV 110 Accessories

- 14 -

Accessories

High pressure carry-over adapter, shouldbe installed in the T1-port when two or morevalves are used in the same circuit. T2 mustthen be connected to Tank

Tank port reduction adapter, can beinstalled in the T1-port when the thread size isto be reduced.

Type BSP Type BSP ½″ to BSP ⅜″Part No.10534-4S Part No.10348-4S

Type UNF SAE # 10 to SAE # 8Part No.10536-4S Part No.10349-4S

Lever

Standard Lever :

Part No. 10347-4S

Other length on request.

CV 110 Accessories

- 14 -

Accessories





Lever

Standard Lever :

Part No. 10347-4S


CV 110 Accessories

- 14 -

Accessories





Lever

Standard Lever :

Part No. 10347-4S


High pressure carry-over adapter, should be installed in the T1-port when two or morevalves are used in the same circuit. T2 mustthen be connected to tank

Tank port reduction adapter, can be installed in the T1-port when the thread size is to be reduced.

Part No.10534-4S Type BSP ½″ to BSP ⅜″Part No.10348-4S

Part No.10536-4SSAE # 10 to SAE # 8Part No.10349-4S

Standard lever :

Other lengths on request.

Part No. 10347-4S

Lever


15

Order Code

6


2

Contents

General Information

Technical data

Dimensions

Secondary Valves

Cylinder port mounted secondary valves

Spool - Control characteristics

Spool Controls

Order Code

Page8

Page 9-10

Page 11-12

Page 3

Page 4

Page 5

Page 6

Page 7


3

General Information

The CV 300 is a modular monoblock valve which is available in 1 to 4 and 6 sections, with the option of additional spool functions by using a High pressure carry-over fitting (Power Beyond).The valve is designed for a maximum working pressure of 320 bar (4600 psi) with a flow from 40 to 140 l/min (9-37 USGpm.).

The CV 300 valve offers its user optimised characteristics with regard to function, capacity and quality. It is designed with the machine builders high demands of cost effectiveness, function and need of exceptionally good load maneuverbility in mind. Suitable areas of use are forklift trucks, lorry mounted cranes, dumpers, loaders, excavators and other equipment where precise load control is required.Although the valves external dimensions are small, it does allow high internal flows and can be equipped with a large number of accessories as standard. The uniquely designed canal system results in exceptionally low pressure drops leading to improved performance and longer life not only of the control valve but also of the other components in the hydraulic system.

The CV 300 is manufactured using the highest quality alloy cast iron which in combination with NIMCO’s advanced machining and control methods assures the precise accuracy of every component. Each valve is tested and the results documented prior to despatch.

Minimised spool leakage.Hard chromium plated spools, low friction and a specially developed honing method gives absolute minimum spool leakage of the valve.

Easy assembly.The valve has two pressure inlets and two tank outlets allowing pipes and hoses to be connected either from the side or top of the valve.

Excellent load control.CV 300 can be fitted with the standard load control spools or with specially designed spools for specific flows, each of which is designed to provide optimum control characteristics within its flow range. On request, special spools can be designed for special functions.

Full utilisation of the spool stroke. The optimised soft maneuver grooves integrated in each spool and the precise machining of every component allows the entire stroke of the spool to be used. This allows full control of the load whether the operator is using very little or full flow capacity. In addition the movement of any spool in any direction will give the same speed of machine function, enhancing security and reliability.

Multifunctional control.Several spools can be operated at the same time even when very large differences in load are at hand due to the utilisation of the differential pressure built up inside the valve during operation.

Uniform and low lever forces.By combining the unique design features of the valve body and the spools, an excellent balance of the dynamic forces is achieved throughout the entire pressure and flow range. This keeps spring forces at a minimum and makes the valve very easy to operate by hand lever as well as when any of the NIMCO’s remote control valves are used.

Wide range of accessories.The CV 300 offers a wide range of possibilities by using existing and future accessory valves. Also a wide range of spool and remote controls such as single or joystick wire controls, pneumatic and hydraulic proportional or on/off controls are available.


4

Technical Data

Max. pressure setting

Main relief valvePort relief valve Tank line

Flow rates

Maximum for the valve

Temperature range Standard seals

Spool leakage at

100 bar (1450 psi) and 46 mm²/s (cSt)(117 SSU) viscosity A and B port

Filtration


Viscosity

Recommended operationgviscosity rangeStart viscosity up to

Weight

CV 301 CV 302 CV 303 CV 304 CV 306

bar

32030010

l/min

140

° C

-40 to +80

cm³/min

Max 10


mm²/s

10-4001000

Kg

8.511.715.919.828.2

psi

46004200150

US GPM

37

°F

-40 to +176

inch³/min

Max. 0.6

NAS 1638-class 10

cSt

47 - 18754687

lbs

18.92635.34462.7

Performance curvesPressure drops at 25 mm2/s (cSt) (117 SSU) viscosity, 50°C (122°F) temperature and standard spool.


5

DimensionsEuropean view setting

Dimensions

CV 301CV 302CV 303CV 304CV 306

L1 mm (inch)

126 (4.96)176 (6.93)226 (8.90)276 (10.87)376 (14.80)

L2 mm (inch)

100 (3.94)150 (5.91)200 (7.87)250 (9.84)350 (13.78)

Port Size

A, B

P1, P2, T2

T1

BSP

3/4’’

3/4’’

1’’

Metric

M22 x 1.5

M22 x 1.5 M27 x 2

SAE

11/16-12 SAE12

11/16-12 SAE12

15/16-12 SAE16


6

Secondary valves

Main relief valve. Differential operated relief valvefor the main circuit. Adjustable from 35 to 320 bar(500-4650 psi).

Check valve. Can be used when two or more valves are connected in series and operates with the same pressure. The first valve should then be equipped with a main relief valve RV and the subsequent valves with CV.

High pressure carry-over adaptors (Power Beyond) are available to serial connect the CV 300 with one or more control valves, available from NIMCO.

Tank port reduction adaptor, can be installed in the T1 port when the thread size is to be reduced.


Order code: CV

Graphs valid for 25 mm2/s (cSt.)(117 SSU) 70 bar=1000 psi

Part No. 4S-6071

Part No. 4S-6020

Part No: 4S-1891 (BSP 1″ → ¾″)Part No: 4B-11599 (UNF 16 → 12)

Part No: 4S-1851 (BSP 1″ → ¾″)Part No: 4S-65251 (UNF 16 → 12)

Part No: 4S-1877 (BSP 1″ → ¾″)


7

Relief valve. Differential operated port relief valve preventing pressure peaks. Fixed pressure setting from 35 to 320 bar (500-4650 psi).

Anti-cavitation valve. Checkvalve used to level underpressures that can occur in thecylinder ports.

Relief anti-cavitation valve.Works as both port relief andanti-cavitation valve.

P1 Cylinder port accessoryvalve blank.The plug is used when acylinder port accessorycavity should be blanked off.

P2 D/A to S/A conversion plug.This plug is used when a fitteddouble acting spool is to beused as a single acting functionwhile maintaining oil in boththe chambers of the cylinder.

Graphs valid for 25 mm2/s (cSt.)(117 SSU) 70 bar=1000 psi Order code: C+pressure setting

Order code: A


Characteristics according to C and A.

Cylinder port mounted secondary valves

Part no. 4S-4226

Part no. 4S-4030

Part no. 4S-4070

Part no. 4S-4525

Part no. 610034


8

Spool - Control Characteristics

All of NIMCO’s spools are designed for specific flow rates in order to achieve optimal load control characteristics and to fully utilise the spools entire stroke. By optimising the balance between spools and valve housing, spring forces are minimized and exact maneuvering is achieved. Besides the standard spools listed there are also spe-cial spools available. For further information concerning these types please contact your NIMCO representative.

Control Characteristics P-A(B), Spool S.

Pump flow 70 l/min (19 US Gpm).Viscosity 25 mm²/s (cSt) (117 SSU) Oil temp. 50° C (122° F).

1. Pressure in work port 50 bar (725 psi)



Spool type

4S

Order code Standard spool Part No.

2SB

2SA

1S

3B-6049

3B-6026

3B-6028

3B-6035

Motor

Single acting B-port

Single acting A-port

Double acting

Symbol

3S 3B-6070Double actingwith float position


9

Spool Controls


9

9M

10

10M

9S

S1

S7

S2

S5M

S6

Spring centered.

Marine version.

Detent in position 1, 2 and 3

Marine version

Spring centered with straight

through spool.

Detent in position1, 2, 3 and straight

through spool.

Spring centered.Detent in position 4.

Spool 3 only


Joystick fordual-spool

control.

11

14

10S

Spring centered.Detent in pos. 3 and 4.

Spool 3 only.12

Spring centered.Detent in position 2.13

Spring centered.Detent in pos. 2 and 4.

Spool 3 only.15

Hand leververtical.

Link connection.

Hand leververtical, opposite direction.Link connection.Other length and hand knobs upon request.

Hand leverhorizontal.

Link connection.

Hand leververtical.

Encased.Marine version,in combinationwith 9M and

10M only.


10

Spool Controls


P

PP

H

HP

HD

3W

HD

Pneumatic on/off.

Pneumatic proportional.

Hydraulic on/off. Pilot pressure

6-15 bar 87-217 psi.

Electro-pneumatic on/off.

12v/270mA alt. 24v/150mA.

Hirschmann contact is standard.

Others are available on request.


6-15 bar 87-217 psi.

EP

HPD

Hydraulic proportional. Pilot pressure

6-15 bar 87-217 psi.


6-15 bar 87-217 psi.

HPD

HD and HPDcannot be

combined withany other spool

controls.

Wire control for3-position spool.


Spool 3 only.

4W


11

Order Code

EXAMPLE 1:Spool 3 is double acting with float position (code 3), spring centered with detent for the float position(code 11) and equipped with a hand lever (code S1).Spool 2 is double acting with integrated load holding check valves (code 5), spring centred (code 9), and equipped with a cylinder port relief valve in port B(code C) and hand lever (code S1).

Spool 1 is a double acting motor spool (code 4), spring centred (code 9) and equipped with a hand lever (code S1).

The valve is fitted with a main relief valve (code RV), pressure port P2 and tankport T2 are left open for hose connection.

Order code:CV303-RV210-P2-1S9.S1xx-5S9.S1xC140--3S11.S1xx-x-T2-G

EXAMPLE 2:This valve has a double acting spool (code 1), which is spring centered (code 9), two cyl. port/anti-cavitation valves in both cyl. ports (code CA) and equippedwith a hand lever (code S1).

The valve is not fitted with a main reliefvalve(code CV instead of RV), pressureport P2 and tank port T2 are left open forhose connection. A high pressure carryoveradaptor is fitted in the T1 port.

Order code:CV301-CV-P2-1S9.S1CA140CA95-S-T2-G


12

Order Code

Series CV 400 - UnibodyDirectional Control Valve

2

Hydraulic systemsContents

General Information

Technical Data

Performance Curves

Dimensions - Basic Valve

Dimensions - Unibody

Secondary Valve

Spools

Spool Controls

Accessories

Order Code

Appendix

Page 9

Page 10

Page 11-12

Page 13

Page 14

Page 15

Page 3-4

Page 5

Page 6

Page 7

Page 8


3

Hydraulic systemsGeneral Information

The CV 400 Unibody is a modular monoblock valve which is available in 1 to 4 sections, with the option of additional spool functions by using a carry-over fitting (Power Beyond).The valve is designed for a maximum working pressure of 320 bar (4600 psi) with a flow from 15 to 80 l/min (4-21 USgpm).

The CV 400 Unibody valve offers its user optimized characteristics with regard to function, capacity and quality. It is designed with the machine builders high demands of cost effectiveness, function and need of exceptionally good load maneuverability in mind. Suitable areas of use are forklift trucks, cranes, loaders and other equipment where precise load control is required.Although the valve’s external dimensions are small, it will allow high internal flows and can be equipped with a large number of accessories as standard. The uniquely designed canal system results in exceptionally low pressure drops leading to improved performance and longer life not only of the control valve but also of the other components in the hydraulic system.

The CV 400 Unibody is manufactured using the highest quality alloy cast iron which in combination with NIMCO’s advanced machining and control methods assures the precise accuracy of every component. Each valve is tested and the results documented prior to dispatch.

UnibodyThe Unibody system is designed to give the valve user maximum flexibility and economy. The system comprises of a standard valve onto which a number of secondary valves can be mounted. Any combination of valves, already available in the program, and future developments in reponse to customer requests, can be mounted onto the valve in any preferred combination. Having all secondary valves directly on the valve, piping and hosing costs are kept to a minimum. Simultaneously, the user is allowed flexibility in designing the hydraulic system for each machine. The valve can be delivered with the Unibody functions already fitted to the valve or simply prepared for any of the large number of standard Unibody blocks that are available.

Minimized spool leakage.Hard chromium plated spools, low friction and a specially developed honing method provide for absolute minimum spool leakage of the valve.

Easy assembly.The valve has two pressure inlets and three tank outlets allowing pipes and hoses to be connected either from the side or top of the valve.


4

Hydraulic systems

Excellent load control.CV 400 Unibody is delivered with a wide range of standard spools each of which is designed to provide optimum control characteristics within its flow range. On request, special spools can be delivered for other flow rates.

Full utilization of the spool stroke. The optimized soft maneuver grooves integrated in each spool and the precise machining of every component allow for the entire stroke of the spool to be used. This allows full control of the load whether the operator is using very little or full flow capacity. In addition, the movement of any spool in any direction will give the same speed of machine function, enhancing security and reliability.

Multifunctional control.Several spools can be operated at the same time even when very large differences in load are at hand due to the utilization of the differential pressure built up inside the valve during operation.


Wide range of accessories.The CV 400 Unibody offers a wide range of options by using existing and future accessory valves. Also a wide range of spool and remote controls such as single or joystick wire controls, pneumatic and hydraulic proportional or on/off controls are available.

General Information


5

Hydraulic systemsTechnical Data

Max. pressure setting

Main relief valvePort relief valveTank line

Flow rates


Temperature range

Standard seals

Spool leakage at

100 bar (1450 psi) and25 mm²/s (cSt)(117 SSU) viscosityA and B port

Filtration


Viscosity

Recommended operating viscosity rangeStart viscosity up to

Weight

CV 401CV 402CV 403CV 404

Weight/Unibody option

SingleDouble

Operating force necassary to move the spool


bar

32033010

l/min

80

°C

-40 to +80

cm³/min

4


mm²/s(cSt)

10-4001000

kg

4.46.68.710.9

0.30.75

N

130230200

psi

46504700145

USgpm

21

°F

-40 to +176

inch³/min

0.24

NAS 1638-class 10

SSU

47-18754687

lbs

9.714.519.224

0.71.6

lbf

295245


6

Hydraulic systems

Pressure Drop PgT

Pressure Drop PgA(B)

Pressure Drop A(B)gT

Performance Curves


7

Hydraulic systemsDimensions - Basic Valve

Dimensions

CV 401

CV 402

CV 403

CV 404

L1 mm (inch)

101 (3.98)

144 (5.67)

187 (7.36)

230 (9.06)

L2 mm (inch)

77 (3.03)

120 (4.72)

163 (6.42)

206 (8.11)

Port size

A,B

P1, P2, T2, (T3)

T1

BSP

1/2”

1/2”

3/4”

Metric

M 18 x 1.5

M 18 x 1.5

M 22 x 1.5

SAE

3/4-16 SAE8

3/4-16 SAE8

1 1/16-12 SAE12


8

Hydraulic systemsDimensions - Unibody

Dimensions

CV 401

CV 402

CV 403

CV 404

L1 mm (inch)

101 (3.98)

144 (5.67)

187 (7.36)

230 (9.06)

L2 mm (inch)

77 (3.03)

120 (4.72)

163 (6.42)

206 (8.11)

Port size

A,B

P1, P2, T2, (T3)

T1

BSP

1/2”

1/2”

3/4”

Metric

M 18 x 1.5

M 18 x 1.5

M 22 x 1.5

SAE

3/4-16 SAE8

3/4-16 SAE8

1 1/16-12 SAE12


9

Hydraulic systemsSecondary Valve

Main relief valve. Differential operated relief valve for themain circuit. Adjustable from 35 to 320 bar (500-4600 psi).


Part No: 4S-4076

Cylinder port mounted secondary valves.Relief valve. Differential operated port relief valve preventing pressurepeaks. Fixed pressure setting from 35 to 330 bar (500-4700 psi).

Part No: 4S-4030

Anti-cavitation valve. Check valve used to level negative pressuresthat can occur in the cylinder ports.

Part No: 4S-4226

Check valve. Can be used when two or more valves are connected in series and operated with the same pressure. The first valve should then be equipped with a main relief valve RV and the subsequent valves with CV.

Graphs valid for25 mm2/s (cSt.)

(117 SSU).70 bar = 1000 psi

Part No: 4S-4094

Relief anti-cavitation valve. Works as both port relief and anti-cavitation valve.

Characteristics accordingto C and A.

Order code: CV

Order code: C+pressure setting

Order code: A


Part No: 4S-4070


10

Hydraulic systems

All of NIMCO’s spools are designed for specific flow rates in order to achieve optimal control characteristics and to fully utilize the spool’s entire stroke. By optimizing the balance between spools and valve housing, spring forc-es are minimized and exact maneuvering is achieved. In addition to our standard spools are there a wide range of specially designed spools to maximize load control at different pump flows and applications. Please contact our factory or any authorized distributor for further information.

Spool type Order code Standard spool Part No.

2SB

2SA

1S

3B-4122

3B-4004

3B-4002

Single acting B

Single acting

Double acting

Symbol

5S 4S-40087Double acting withbuilt in check valves

Spools

3S 3B-4061

6S 3B-40068Regenerative

4S 3B-4035Motor

Double actingwith float position

Controlcharacteristics

Standard spoolPump flow 50 l/min(13.2 USgpm).

P-A/B1.Press. 50 bar (725 psi)2.Press. 150 bar (2175 psi)3.Press. 250 bar (3625 psi)

A/B-TViscosity25 mm²/s (cSt)50


11

Hydraulic systemsSpool Controls


9

9M

10

10M

10S

S1

S5

S5M

S6

Spring centered.

Marine version.


Marine version

Detent in pos.1, 2, 3 and

straightthrough spool.

Spring centered.Detent in pos. 4.

Spring centered.Detent in pos. 3

and 4.

Spring centered.Detent in pos. 2

and 4. Joystick fordual-spool

control.

12

15

11

Spring centered.Detent in pos. 2.13

Spring centered.Detent in pos. 3.14

Spring centered.Detent in pos. 1,

2, 3 and 4.16

Hand leververtical.

Encased.Marineversion.


Hand leververtical.

Encased.

Hand leververtical.

Other lengthson request.

S2

Standard Control


12

Hydraulic systemsSpool Controls


EDA

EHP

EP

EHP

3W

Electric directacting solenoid

on - off.12 V / 3.6 A24 V / 1.8 A

Electro-hydraulicproportional.

12V/1.5 A24V/0.75 A

Electropneumaticon-off.

12V/270mA alt.24V/150mA.

External kickout.From pos. 3 to

pos. 1.EK

Electro-hydraulicproportional.

12V/1.5 A24V/0.75 A

with manual hand lever override

Hydraulic on/off.Pilot pressure

6-15 bar (87-217 psi)H

Hydraulicproportional.Pilot pressure

6-15 bar (87-217 psi)HP

Pneumaticon/off.P

Pneumaticproportional.PP

4WWire control for4-position spool.



13

Hydraulic systemsAccessories

High pressure carry-over adaptor (Power Beyond), should be installed in the T1-port when two or more valves are used in the same circuit. T2 must then be connected to tank.

Tank port reduction adaptor, can be installed in the T1 port when the threadsize is to be reduced from BSP 3/4” to BSP 1/2” or from SAE12 to SAE 8.


14

Hydraulic systemsOrder Code


15

Hydraulic systemsAppendix

CV601/eng/WEB/R0603


2

Contents

General Information

Technical data

Performance Curves

Dimensions

Relief and Check Valves

Spool - Control characteristics

Spool Controls

Order Code

Page 8

Page 9-10

Page 11-12

Page 3

Page 4

Page 5

Page 6

Page 7


3

General Information

The CV 601 is a robust single spool monoblock valve designed to offer its user very low pressure drops and with the option of additional spool functions by using a High Pressure Carry-Over Adaptor (Power Beyond).The valve is designed for a maximum working pressure of 320 bar (4600 psi.) with a flow from 25 to 180 l/min (6.6-48 US GPM).

The CV 601 valve offers its user optimised characteristics with regard to function, capacity and quality. It is designed with the machine builders high demands of cost effectiveness, function and need of exceptionally good load maneuverbility in mind. Suitable areas of use are dumpers, loaders and other equipment where precise load control is required.

Although the valves external dimensions are small, it does allow high internal flows and can be equipped with a large number of accessories as standard. The uniquely designed canal system results in exceptionally low pressure drops leading to improved performance and longer life not only of the control valve but also of the other components in the hydraulic system. It can be fitted with two main relief valves to allow for up to 180 l/min (48 US GPM) flow.

The CV 601 is manufactured using the highest quality alloy cast iron which in combination with NIMCO’s advanced machining and control methods assures the precise accuracy of every component. Each valve is tested and the results documented prior to despatch.

Minimised spool leakage.Hard chromium plated spools, low friction and a specially developed honing method gives absolute minimum spool leakage of the valve.

Easy assembly.The valve has two pressure inlets and two tank outlets allowing pipes and hoses to be connected either from the side or top of the valve.

Excellent load control.The CV 601 has load check valves and can be fitted with both standard spools and with specially designed spools for specific metering needs which will provide optimum control characteristics.

Full utilisation of the spool stroke. The optimised soft maneuver grooves integrated in each spool and the precise machining of every component allows the entire stroke of the spool to be used. This allows full control of the load whether the operator is using very little or full flow capacity. In addition the movement of any spool in any direction will give the same speed of machine function, enhancing security and reliability.


Wide range of accessories.The CV 601 offers a wide range spool and remote controls such as single wire controls, pneumatic and hydraulic proportional or on/off controls are available.


4

Technical Data

Max Pressure Setting

Main Relief ValveTank line

Flow rates


Temperature Range

Standard seals NBR BUNA-N seals

Internal Leakage A(B) to T

100 bar (1450 psi) and 46 mm²/s (cSt)(117 SSU) viscosity A and B port

Filtration

Contamination level equal to or better then Viscosity

Recommended operatingViscosity rangeStart viscosity up to

Weight

CV 601

bar

32010

l/min

180

° C

-40 to +80

cm³/min

Max 10


mm²/s

10-4001000

Kg

7.3

psi

4600145

US GPM

48

°F

-40 to +176

inch³/min

0.6

NAS 1638-class 10

cSt

47 - 18754687

lbs

16.1


5

Performance Curves

Pressure Drop PT

Pressure Drop PA(B)

Pressure Drop A(B)T

30 60 90 120 150 180

5

10

15

Flow L/min

Bar

145

75

220

20 403010

psi

US gpm20

PT

0

30 60 90 120 150 180

5

10

15

Flow L/min

Bar

145

75

220

20 403010

psi

US gpm20

0

A(B)T

30 60 90 120 150 180

5

10

15

Flow L/min

Bar

145

75

220

20 403010

psi

US gpm20

0

With check-valve

Without check-valve

PA(B)

PA(B)


6

DimensionsUS view setting


7

Relief and Check Valves

One main relief valve. Differential operated relief valve for the main circuit. Adjustable from 35 to 320 bar (500-4600 psi).

Tank Port Reduction Adaptator can be installed in the T1 port when the thread size is to be reduced.Part No: 4S-1891 (BSP 1″ → ¾″)Part No: 4B-11599 (UNF 16 → 12)

Check valve. Can be used when two or more valves are connected in series and operates with the same pressure. The first valve should then be equipped with a main relief valve RV and the subsequent valves with CV.

High Flow OptionDouble Main Relief Valve OptionRecommended for high flow (over 120 l/min).

Part No: 4S-11362

Part No: 4S-6020

Part No: 4S-6020

High Pressure Carry-Over Adaptators (Power Beyond) are available to serial connect the CV 601 with one or more control valves.Part No: 4S-1851 (BSP 1″ → ¾″)Part No: 4S-65251 (UNF 16 → 12)

Part No: 4S-1877 (BSP 1″ → ¾″)

Part No: 4S-6020


8

Spool - Control Characteristics

All of NIMCO’s spools are designed for specific flow rates in order to achieve optimal load controls characteris-tics and to fully utilise the spools entire stroke. By optimising the balance between spools and valve housing, spring forces are minimized and exact maneuvering is achieved. Besides the standard spools listed designed for maximum flow and minimum pressure drop there are also special spools available. For further information concerning these type of spools please contact your NIMCO representative.

Spool type

4X

Order code Standard spool Part No.

2XB

2XA

1X

3B-6073

3B-6050

3B-6111

3B-6037

Motor

Single acting B-port

Single acting A-port

Double acting

Symbol

Control Characteristics P-A(B), Spool S.

Pump flow 70 l/min (19 US Gpm).Viscosity 25 mm²/s (cSt) (117 SSU) Oil temp. 50° C (122° F).





9

Spool Controls


9

9M

10

10M

9S

S1

S7

S2

S5

S5M

Spring centered.(Standard Spool

Control)

Marine version.


Marine version

Spring centered with straight

through spool

Detent in position 1, 2, 3 and

straight through spool.



Hand leververtical.

Link connection.

Hand leververtical, opposite

direction.Link connection.

Other length and hand knobs upon request.

Hand leververtical encased.Marine version in combination with 9M and 10 M only.


Link connection.

13

14

10S Hand lever vertical.Encased.

(Standard Spool Control)


10

Spool Controls


P

PP

H

HP

HD

3W

HD

Pneumatic on/off.

Pneumatic proportional.


6-15 bar 87-217 psi.

Electro-pneumatic on/off.

12v/270mA alt. 24v/150mA.

Hirschmann contact is standard.

Others are available on request.


6-15 bar 87-217 psi. HD and HPD

cannot becombined with any other spool

controls.

EP

HPD


6-15 bar 87-217 psi.


6-15 bar 87-217 psi.

HPD

Wire control for 3-position spool.


11

Order Code

Example 1This Directional Control Valve is equipped with one Main Relief Valve (code RV 150), a double acting spool (code 1X) with a spring centered spool con-trol (code 9) and an enclosed type hand lever control (code S5)

High Pressure Carry-Over Adaptor installed in the T1 port.


12

Order CodeCo

py th

is pa

ge an

d use

as

your

tech

nical

orde

r for

m.

Stan

dard

Main

Pre

ssur

e Se

tting i

s don

e at 7

0 lpm

(1

6 US

GPM)

. Plea

se

clairly

indic

ate if

you w

ant

the M

RV pr

essu

re to

be

set a

t ano

ther fl

ow. CV

601

Sec

tion

1

BSP

GSA

E

SM

etric

M

Tank

por

t si

de T

1

to

p T2

Pum

p in

let

s

ide

P1

t

op P

2

Mai

n re

lief v

alve

RV

+ p

ress

ure

setti

ngor C

heck

Val

ve

CV

Opt

iona

l 2n d

Mai

n re

lief v

alve

if

flow

is o

ver 1

20 l/m

i nRV

+ p

ress

ure

settin

gif

not a

pplic

able

mar

k X

High

Pre

ssur

e Ca

rry-

Ove

r(P

ower

Bey

ond)

STh

read

Red

ucin

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dapt

or

R

Spoo

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trol

B-s

ide

code

pag

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10

Spoo

l con

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A-s

ide

code

pag

e 9-

10Sp

ool t

ype

code

pag

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AT2

T1

B

P1

2nd

MR

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on

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MR

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P2

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