C valves technology

Company & Technology Presentation

Who is and Why C-Valves?

Who and Why C-Valves? C-Valves end-user base C-Valves technology C-Valves applications C-Valves advantages Technical characteristics Sample installations Summary of benefits Proposed cooperation

Who is C-Valves?

C-Valves is a supplier of pressure control and regulation solutions for water supply systems.

C-Valves was established in 1995 with the

mission to develop a control valve technology that will eliminate the problems

inherent in conventional control valve systems

Why C-Valves?

The bottom line for C-Valves is to assist its customers in lowering costs mainly by:

Lowering water loss using pressure management to minimize leakage

Lowering system’s life cycle cost by slowing down system wear and pipe break rate

Why C-Valves?

C-Valves applications cover any control valve application currently in use in the market, but they are relatively:

More Reliable, Highly durable for corrosion and cavitation Simple to operate Very low on maintenance

C-Valves Applications

On-Off Valves Pressure Reducing Valves Pressure Sustaining Valves Pressure Relief Valves Pump Valves Altitude Valves Dynamic Flow Regulating Valves Special & Custom Made Solutions

C-Valves End Users

Public and private Waterworks.

High rise buildings and industrial plants

Agricultural water supply systems

C-Valves Technology

Globe

Linear Flow Linear Control - A new control concept, which is linear and parallel to the flow. As opposed to the conventional way,

which is perpendicular to the flow.

C-Valves -M1

C-Valves Piston Movement

C-Valves Technology

The Control Trim

Control and piloting using a Trim Manifold.Changes in Control Trim without opening tubes.

Fast & easy maintenance

The Control Trim

C-Valves 3-Way Pilots:

Adjustment accuracy and hysteresys of 20-30 cm (Conventional pilots: 2-3 m)

Pressure range: 0 to 30 bar

High functionality under very low pressure

Extremely fast action

Our Valve Selection

KV=90; PN25

Model M3- 2”

Model M3- 3”

M3

PN16 PN20

PN30PN25

ModelM1 -

DN100DN150

)4&”6(”

Our Valve SelectionM1

Our Valve Selection

DN300/12” 4 x 150

DN250/10”3 x 150

DN400/16”6 x 150

DN200/ 8”2 x 150

MultiValve

Multi-Valve DN200 (8”)

Our Valve Selection


Our Valve Selection

Hydrodynamic design Symmetrical passage of Linear Flow Design

for smooth flowFull function at high flow rates Low head loss Surge-free on/off function due to

hydrodynamic structure

Relative Advantages

DurabilityValve body made of reinforced nylon or plastic

materials (Plastic ends and pilots in advanced development)

Mechanical strengthExtremely high cavitation and corrosion

resistance due to special non-corrosive construction materials

Relative Advantages

Piston Valve with double-chamber actuationOne of few really double chamber actuated

valves on market (Can also use external source)

Very fast, but soft openingVery fast closing with delayed final stage -

Important for surge free on/off functionImmediate response time while modulating

Relative Advantages

Relative Advantages

Control volumesOthers

Most commonlysingle-chambered

C-ValvesDouble-chambered

The only valve that is Normally Closed by structure - Not by control loop or command pilot

Light weight

Low noise through smooth operation

Fully functional at near to zero flow

Relative Advantages

Relative Advantages

Accurate and stable regulation for a wide range of pressures and flow rates

Capable of reducing pressures at more than 10:1 ratio. This is enabled by our unique 3-way pilot and the hydrodynamic structure & linear flow design.

Valve Characteristics

C-Valves

C-Valves delayed closure Others

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0 2 4 6 8 10 12 14 16 18 20

Time [seconds]

Clo

sure

Others8-100 sec.

C-Valves2-10 sec.

Valve closure

KV = 200 KV = 330

0.01

0.1

1

100 1000

m³/h

Bar

s

Others C-Valves

200 500300 400


Head loss chartfor DN100 4” valve

KV = 435


Flow Rate Range On/Off Valves: M3 DN50 – from 0 to 80 m3/h, Kv=90 M3 DN80 – from 0 to 120 m3/h, Kv=90 M1 DN100 – from 0 to 250 m3/h, Kv=435 M1 DN150 – from 0 to 550 m3/h, Kv=435 DN200 Multi-Valve (2xM1) from 0 to 1000 m3/h,Kv=850 DN250 Multi-Valve (3xM1) from 0 to 1500 m3/h,Kv=1210 DN300 Multi-Valve (4xM1) from 0 to 2000 m3/h,Kv=1570 DN400 Multi-Valve (6xM1) from 0 to 3000 m3/h,Kv=2500


Do not compare valves DN to DN. Compare their max. flow rates: Max. allowed flow velocity

through the M1=19m/sec (62 ft/sec). Enables use of lower diameter M1, where larger conventional valves were required for the same flow rate.


C-Valves smart closure profile4” valve, closure and opening at 650 m3/h

0100200300400500600700

0 5 10 15 20 25 30Time[seconds] Flow rate Upstream head Downstrean head

Flow rate [cu.m/h]Head [m]

Fast & accurate function


0

50

100

150

200

0 500 1000 1500 2000 2500

Outlet pressure set to 50 m

Flow rate

Inlet pressure change

Downstream pressure regulation Using C-Valve and 3-way pilot

Flow rate [m3/hHead [m]

Time[seconds*(1/100)]


Downstream pressure set to 50 m

020406080

100120140160180200

0 500 1000 1500 2000 2500 3000Time[seconds*(1/100)]

Flow rate Downstream pressureUpstream pressure

Flow rate m3/hHead [m]

Pressure regulation within a wide flow rate range


0

20

40

60

80

100

120

0 500 1000 1500 2000 2500Time[seconds*(1/10)]Flow rate Upstream pressure Downstream pressure

Flow rate change Upstream pressure changeFlow rate m3/h]Head [m]

C-Valves quick reaction and stability


Pressure Stability, Accuracy

Sutton & East Surrey Water - UK

Former valve C-Valves

C-Valves installation in S&ESW, UK

Before and After


August 14 07 (C-Valves installed)

Upstream pressure

Down Stream

pressure

Flow

Pressure Stability, Accuracy

Grantham – AustraliaC-Valve replaces a conventional valve due to non stable pressure

Before and After

C-Valves installed in Grantham Australia


Loss Saving: DMA 1 – 26% DMA 2 – 43%


6”16.019.045-7580-90

4”12.515.522-3742-45PN-16PN-25PN-16PN-25

C-ValvesOthers

Lightweight [kg]

Sample Installations

Pressure-Reducing / Sustaining Valve in Italy


Mexico - Morala

Quick Relief valve in Mexico


Quick Relief Multi ValvesDN-200 at Hakoren, Sewage

treatment plant, Israel


-Other Electric Float Valve- -Drop the inlet pressure

when open, high flow- -Create water hammer

when close, zero flow- -Need electricity

- -Need float installation

Altitude Valve- -Maintain accurate pool

level (20 cm)- - Do not disturb the

upstream pressure- -Electricity only for backup

- -No need in pool installation

- -reliable- -high cavitations

resistance

C-Valve

0

10

20

30

40

50

60

70

80

13/12

/2004

14:02

:20

12/12

/2004

15:02

:12

11/12

/2004

15:19

:50

10/12

/2004

16:03

:12

09/12

/2004

18:34

:25

08/12

/2004

18:18

:59

07/12

/2004

20:04

:23

06/12

/2004

19:03

:53

05/12

/2004

19:04

:34

04/12

/2004

19:48

:12

03/12

/2004

20:18

:38

02/12

/2004

19:48

:00

01/12

/2004

20:48

:08

30/11

/2004

19:33

:36

29/11

/2004

19:02

:36

28/11

/2004

18:31

:13

day

met

er/m

3 /h

altitude flow

-Flow 1-65 m3/h

-Level 1.9-2 meter

Precision Regulation


Four Surge Anticipating Valves DN150, Turkey


MultiValve DN200 with plug instead of valve for possible future flow rate increase. Possible Enlargement to DN250Grantham, Australia


The C-Valve has been selected by Sydney Water for its pressure management program consisting of over 300 valves

After initial trial of six valves, SWC have selected C-Valves for Stage 1 of their pressure reduction program

Over 50 valves installed to date

Second tranche ordered for additional 20 valves


SWC Design criteria Compact design and modular

construction meant servicing can be done outside the pit and common spares can be employed

Multivalve design enables by pass to be incorporated in the valve manifold to eliminate expensive bypass pipe work• Important for SWC since installing

in established suburbs – construction impact and remediation costs a key concern for program design

Low and high flow capability of the valve simplifies the design process – they could standardise on the DN150 valve body for all applications


Mt. Crosby reservoir – Ipswich branch line

Booster pumps installed on main line back to Brisbane• Pressure and flow can increase from 30

l/s at 30m head up to 800 l/s at 55m head

• PRV bank must respond from fully open within 1.5 seconds to protect Ipswich cast iron pipes from excess pressure. Max downstream is 45m

• C-Valve is the only valve on the market that could meet the specification of the design engineers

Valve successfully commissioned in May 2007

Brisbane Water, Australia

Benefits Summary

Fast, precise, stable, energy saving valve Dynamic pressure & flow control on site & from

command center to reduce real losses Less system wear through stabilizing operating

conditions in drastically changing consumption Preserving & extending water system’s life

expectancy & functionality for reduced costs. Bottom line - Saving money, Saving Water

C-Valves partners

C-Valves a company with vision and innovative

technology needs capable alliance partners and

distributors, well established in their respective

target markets to jointly penetrate world markets

by presenting end users with complete Pressure

Management solutions.

C-Valves partners

Distributors of solutions for water supply systems. Alliance partners, such as:

• Producers of synergetic solutions.• System planers and integrators

) Controller + PRV + Communication .(• Performance analysis companies.

All wishing to complete their scope of supply offered to their end users.

Thank you!C-Valves Ltd.Tel: +972-72-212-5080Fax: +972-72-212-5081E-mail: [email protected]: www.cvalves.com

mailto:[email protected]

http://www.cvalves.com/

C valves technology

Engineering

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