Maintenance Technical Bulletin 2

RR Valve, Inc. MAINTENANCE/TECHNICAL BULLETIN

Type “CX” Advantages

Problem-Solving Application:

“RR” Reset Relief Valve Assemblies for High Pressure Drilling Platform Mud Pumps

RR Valves Resist Erosion & Corrosion, and Demonstrate High Reliability Over Extended Periods of Time.

The over engineered design of the "RR" Reset Relief Valve protects slush pumps and mud manifolds while guaranteeing greater safety in operation. The "RR" relief valve instantly and automatically shifts to a full open position when the predetermined pressure is exceeded or can be manually opened by simply pressing the manual release button. Thereby, ensuring that damage to essential operating equipment does not occur. By installing the "RR" valve, the operator will save money & time; improved corrosion resistance resulting in higher reliability and longer valve life.

The best because it’s engineered to be the best. The best because it’s manufactured to be the best.

Release pressure setting is not affected by vibration during operation.

Current Reset Relief valves require significant maintenance and repair due to the harsh service environment of hot, dirty oil containing abrasive sand particles.

The features of "RR" Reset Relief Valve reduce maintenance cost and repair downtime:

• Patented 718 Inconel inner and outer hydraulic pistons with enclosed flow path. • Pressure adjustments and calibrations can be made with no special tools. Pressure

adjustments can be made from 400PSI to 8,000 PSI. • Piston, linkage, and crank assembly pins are over designed to 200% of current reset relief

valve designs. • The high strength contiguous crank is designed to the maximum stability, consistent

calibration and operation. • Infrequent repair is simple and easy: Links are designed without protrusion, so inserting

them upside down or backwards does not affect the link/crank mill stop dimension.

When installed, the "RR" Reset Relief valves will do lots of good things for you:

• Eliminate down time • Eliminate large inventories of replacement parts

Patent Pending RRValve™ 1

5201 Mitchelldale #A11 Houston, Texas 77092 713-682-8875


• Safety margins are greatly enhanced with hydraulic balancing • One Size fits all, no need for 3 different valves • All valves come automatically fit for H2S service because of the enhanced metallurgical

designed, sub, piston seal ring and aluminum bronze upper chamber sleeve • Reduced emergency workload

Customers are noting that because of the pressure range and durability of the new design, the "RR" valve can replace all three reset relief valve designs currently on the market and are completely replacing all other valves in service.

Metallurgical Enhancements

The common metallurgy of Reset Relief Valves have been enhanced as well as the introduction of the investment casting process and advanced manufacturing processes.

RR Valve Competition Body 4140 Closed die forging

30K PSI Burst Strength. Weight 47 lbs.

Sand Cast, AISI 1020 10K PSI Burst Strength Weight 350Lbs

Bonnet Investment Cast, AISI 4340

with vanadium Sand Cast, cast iron

Cover Investment Cast, AISI 4340 with vanadium

Sand Cast, cast iron

Handle Investment Cast 316SS Sand Cast, cast iron plated Crank Investment Cast 4340 NQT Cast Steel, 1020 Piston Vacuum cast 718 Inconel Cast, 17-4 PH Sub Forged AlBr machined bar Cast Steel, 1020 Retainer Forged 17-4PH Ring Machined 1018/1020




Engineering Design Enhancements

RR Valve Competition Lower Links & Upper Link

50% increase in size for more controlled reset. Links have no protrusion and can be installed upside down or backwards without affecting the reset on the mill stop

Smaller links often break or elongate making reset without painstaking replacement impossible

Pins 50% increase in size with hydraulic balancing should allow pins to work for extended periods of time without bending or breaking causing difficulties in resetting or complete breakdown and repair

Pins are often bent the very first time valves go off creating difficulties in resetting to pressure without extended adjustment time

Body Hydraulically balanced fluid contained sections, Al. Bronze or Inconel in all wetted surfaces for H2S service & metallurgy allows multiple resets without damage to internal parts

Cast steel design prone to leakage at higher pressures. Pressure needs special expensive trim for H2S service. 30 year old design with no improvements in longevity.

Bonnet Through holes for bolts disallow cross threading and breaking of bolts, incapacitating entire valve.

Threaded holes in bonnet allow trash and dirt to enter Upon disassembly. Breakage of bolts is frequent upon reassembly.

Cover High domed stainless steel will not rust at bolt and cover interface.

Cast steel or iron and plated only. Minimum corrosion resistance.

Handle Stainless steel extra long with finger grip allows reset without cheater pipe. Made to fit slotted reset crank

Short cast iron plated handle. Needs cheater pipe to reset

Crank Box design prevents distortion made from 300 M material for 200K tensile strength. Will reset indefinitely

Tuning fork design in inferior materials. Distorts rapidly causing valve adjustments to make reset possible

Piston Patented hydraulic piston design with enclosed flow path dampens actuation shock protecting outlet piping.

Hollow design affords no protection of lower seal ring, seal retainer or body. Loses ability to reset after minimal time at discharge.

Sub Patented straight ID with 17-4PH T-Bar will never wear out.

Protrusion on sub for inner seal causes multiple change outs of inner seal and retainer because of wear which disallows resetting




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INSTALLATIONAll RR Valve Inc.’handle at the side tochambers. The valvof the valve.

The adjusting nut mspring loading agaian indicator mountethe indicator on the

Because RR Valvesappears to dischargdue to two factors lincreased operating

To close (reset) the

CAUTION: Do not

FIELD SETTINGIf great accuracy inunknown or the valreplaced the valve pfollowing manner:

With the discharge pressure gauge andconnector using thedampening device igauge reading. If populsation.

Adjust the valve toApply pressure untlow, the valve adjuloosened. One full operation and adjusgauge.

MAINTENANCEThe Type “CX” resmaintenance.

Patent Pending RRValve

52

Subject: RR Valve Type “CX” Reset Relief Valv

AND OPERATION s reset relief valves must be installed in a vertical position with the reset operate properly due to the need to lubricate the seals in the dual hydraulic e is set at the desired relief pressure by means of the adjusting nut at the front

oves the upper spring retainer thereby increasing or decreasing the amount of nst the arm of the crank, the correct position of the adjusting nut is shown by d on the upper spring retainer and the calibration plate mounted adjacent to

bonnet cover.

are full range valves, operating conditions may be such that the valve e at a lower (or higher) pressure than is indicated by the valve setting. This is ag in the pressure gauges due to built-in dampening devices, and to the range of the valve.

valve, the reset lever is pulled up until the links strike the crank.

attempt to reset valve while pump is in operation.

PROCEDURE the valve pressure setting is required or discharge line back pressure is ve calibration has been lost, i.e. valve trip mechanism has been rebuilt or ressure setting can be adjusted according to a line pressure gauge in the

1502 connector of the valve made up to the discharge piping, a calibrated a pressurizing device (power pack) should be connected to the line/inlet RR Valve 1502 female blank. If any pressure gauge with a built-in s used, the line pressure should be built up slowly to allow for the lag in the ssible, the line pressure should be built up with little or no pressure

desired pressure setting as indicated by the calibration plate and indicator. il the valve operates, noting the gauge indication. If the gauge indication was sting nut should be tightened; if the indication was high, the nut should be turn of the adjusting nut will change the pressure setting about 550 psi. Repeat tment until valve discharges at the desired relief pressure shown by the

et relief valves have been designed to require a minimum amount of

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The valve should binsure proper operamonthly, 80-100 ft-

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SERVICING Tools Required: Totools should be ava

1/8 inch diameter x

1/4 inch diameter x

Small hammer

Hex Allen wrench

Screwdriver

No. 2 Phillips screw

RR Valve, Inc. sub

Drifts of ½", 5/8" a

Set of closed-end w

In addition to theseall rubber replacem

Refer to Parts List a

PROCEDURE FOPiston Seat and Lowlower valve body pto remove the sub.

1. Disconnect both bolts in order to get

2. Remove sub.

3. Remove the RRV

4. Clean all parts an(eroded), then the sshould be replaced,bonnet assembly upseal lips toward the


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e operated manually before each time that the pump is put into service to tion. Bonnet retaining screws should be checked for proper torque twice lb (11.0 -13.8 kg-m) for 3/4”cap screws on “CX” valves.

perform every phase of service work on the reset relief valves, the following ilable.

1 inch (min.) long straight shank punch (pin punch)

1-1/2 inch (min.) long straight shank punch (pin punch)

set (English)

driver

wrench

nd 7/8"diameter

renches

tools, a supply of new Spirol pins of all sizes should be available as well as ent seals and rings.

nd Drawings at the end of this manual for RR Valve part numbers.

R REPLACEMENT OF PARTS er Valve Body Parts - Replacement of the piston seal ring or any of the

arts requires that the valve first be removed from the line since it is necessary The steps required to disassemble and replace these parts are as follows:

hammer fittings and remove valve. It may be necessary to loosen the flange enough play in the connections, if so retighten and torque to 682ftlbs.

lower seal.

d examine the bore of the sub. If the bore of the sub has been washed away ub should be replaced. If the I.D. of the seal ring is eroded excessively, it Remove the bonnet assembly by unscrewing the bonnet screws. Lift the and out of the body. Remove the upper seal. Install the new seal with the top of the valve body.

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5. Replace bonnet only with new origlubricated with copNever reuse bonnehrs service or semi

e

6. Apply a thin coaassembly in the va

7. Install the two sup sub to the valveminimum torque.

BONNET AND LNote: Keeping a cassembly can be qrepaired in a work

1. Remove adjustin

2. If adjusting stu

3. Remove the foube reused more tha

4. If reset roller mu

5. If reset crank orcrank and pull reserequired, roller mu

6. Lift spring guid

7. Pry off two Spir

8. Rotate upper linrelease button awashaft. Remove top

9. If crank must belift screw out of crbonnet.

Patent Pending RRValv

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assembly on body with reset handle opposite discharge opening and secure inal RR Valve socket head cap screws. Screw threads must be clean and per coat, and then tightened to 80-100 ft-lb (11.0 - 13.8 kg.m) of torque. t screws more than four times. In addition these should be changed out at 2400 - annually.

t of grease to all surfaces of the piston seal rings. Insert the piston seal ring lve body.

ub 0-Rings. Apply copper coat to the threads and then screw in the sub. Make body until it firmly “shoulders up’ inside the valve. Use 700 foot-pounds

INKAGE ASSEMBLY PARTS omplete bonnet assembly with piston is recommended, so that the entire uickly replaced on the valve, and then the damaged/worn assembly may be shop for greater convenience and efficiency.

g nut and lift off upper spring retainer and load springs.

d must be replaced, screw out stud from lower spring retainer and pull out.

r cap screws from bonnet cover and lift off cover *Note cap screws are not to n four times

st be replaced, drive out 1/8" Spirol Pin and slide roller off reset crank.

reset handle must be replaced, drive out Spirol Pin. Slide reset handle off reset t crank out of bonnet cover. Pull reset spring retainer out of reset crank if st be replaced, drive out 1/8" Spirol Pin and slide roller off reset crank.

e rod and reset spring out of bonnet.

ol springs.

k into horizontal position, drive out 1/8" Spirol Pin in upper link while holding y from bonnet. This prevents the Spirol Pin from striking the release button crank pin.

removed, lift lower spring retainer, turn load screw out of spring retainer, and ank. Drive out 1/8" Spirol Pin, remove crank pivot pin and lift crank out of

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10. If it is necessarinside. Spring may

11. Remove and dwill be pulled out bonnet.

12. Piston may be

13. Disassemble utwo link pins.

14. Stem bushing a

Replace all worn 1. Check lower linlaying a straight edlinks with a RR Vaappear to be defecmatched and mar2. Check all link areplaced. A worn p

3. Examine the ODcorrosion. Replace

4. Examine the twspring is less than when reassembled

5. Examine the twsprings should be alignment with ins


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y to remove the release shaft, it can be driven out of the bonnet from the be removed from shaft after button is removed (by unscrewing).

iscard four bonnet-retaining cap screws and lift bonnet off of body. Linkage of bonnet on piston. Use only new original RR Valve cap screws to replace

pulled out of body.

pper link and lower links by punching out four 1/8” Spirol Pins and removing

nd washer will slide off piston stem.

pads. Clean all remaining parts and examine as follows: ks for straight and/or elongation of link pin holes. Check straightness by ge against the end flat on each side of the link. Always replace both lower lve supplied, matched set, never just one link, even though only one link may

tive. *Please note: Linkage sets supplied by RR Valve are dimensionally ked. nd crank pins. If a pin is not straight or shows signs of wear, it should be in will show cracks in the surface or may no longer be perfectly round.

of the piston and piston stem for signs of excessive wear, galling, or as required.

o load springs for “set” or yielding. If the nominal free length of the load 7-1/8", both springs should be replaced and the valve should be recalibrated .

o Spirol pins for yielding. In the free position, the two tabs which hold the in approximate alignment. If the outside tab is more than 30 degrees from ide tab, the spring should be replaced.

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Reassemble the bodisassembled.

e

Proceed as followsscrews.

REASSEMBLY O1. Install new stem

2. Assemble lower

3. Assemble upper Spirol Pin. Upper a

4. For piston hydramust have seal in lopiston in outer pistotop down until inneapproximately ½” bburp air so that no aWith both chamberwipe oil overflow o 5. Insert linkage thrpositioning bonnet this point pull uppechamber of its own

6. Install crank in to

7. Install release mein bonnet. Tap buttbutton onto shaft to

8. Upper link shoul

9. With piston in ra

10. Push linkage doresist upper movem

11. Drop load screw

12. Attach reset rolbonnet cover from

13. Place reset handSpirol Pin.


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nnet and linkage assembly in the reverse order that the parts were

using new Spirol Pins and new original RR Valve socket head cap

F BONNET AND LINKAGE ASSEMBLY. bushing seal and 0- Ring on stem bushing.

links to piston with link pin. Secure link pin with 1/8" Spirol Pins.

link large end between lower links with link pin and secure pin with 1/8" nd lower links should fit snugly but turn freely.

ulics and correct applications of seals study enclosed drawing. Inner piston wer position and spacer in upper position to work properly. Place inner n so that it clears inner step. With T-Bar in place push assembled piston stem r piston bottoms out, this positions lower inner piston properly, with etween valve body and stem bushing fill with hydraulic oil taking time to ir is left in the lower chamber. (Stem seal larger diameter should face down.)

s overflowing, (this assures no air entrapment,) then lower stem bushing and ut of o-ring groove.

ough bottom of bonnet and fasten bonnet to body with cap screws, after so that reset handle will be opposite discharge opening and torque down. At r link hole up to mate hole in crank. Oil will then move to inner piston accord.

p of bonnet with crank pivot pin and secure with long 1/8" Spirol Pin.

chanism by placing spring, bushing, and button on shaft and inserting shaft on with small hammer to fit screw in bushing on outside of bonnet. Screw prevent loss.

d extend through crank and fasten to crank with top crank pin.

ised position, insert 1/8" Spirol Pin through upper link and top crank pin.

wn toward closed position and install Spirol springs in crank so that they ent of linkage.

through crank arm and bonnet and screw into lower spring retainer.

ler to reset crank and secure with I/S Spiral Pin Insert reset crank through the inside.

le over reset crank with handle pointing downward and secure with 5/16"

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14. Place reset sprinreset crank and turnplaced on bonnet. Flubricated with M0

Torque should be 8times. In addition th

15. Set load springsScrew locknut on s

16. If possible, ope

• Correct calibratiopressure. When newnecessary to recalib

• Binding or interfeshould work freely.inaccurately and sh

CALIBRATION IFor calibration purppressure (see Field the line pressure shthe line pressure sh

Remove bonnet covcover using new or

Screw down the adplate. Apply pressupressure gauge. If the load screw intoscrew). If the actuathe lower spring retcalibration plate. Ifthat the valve opera


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g around guide rod and insert rod into hole in bonnet. Insert spring keeper in reset lever so that spring guide rod engages spring keeper as bonnet cover is asten bonnet cover using only original RR Valve cap screws and nuts S2.

0-100 ft-lb. (11.0- 13.8 kg.m). Never reuse bonnet screws more than four ese should be changed out at 2400 hrs. service or semi- annually

on lower retainer and place upper retainer over adjusting stud and springs. tud.

rate the valve to determine the following:

n: The relief pressure indicator should accurately indicate the actual relief load springs have yielded considerably (become shorter), it will be rate the valve.

rence between parts: All moving parts, especially the linkage assembly, Interference between moving parts will cause the valve to operate ould be remedied.

NSTRUCTIONS oses, a calibrated pressure gauge should be connected to read the line/inlet Setting Procedures). If any gauge with a built-in dampening device is used, ould be built up slowly to allow for the lag in the gauge reading. If possible, ould be built up with little or no pressure pulsation.

er so that the lower spring retainer can be lifted and turned. Replace bonnet iginal RR Valve socket head cap screws and nuts.

justing nut until the indicator is approximately mid-range on the calibration re until the valve operates, noting the actual line pressure as indicated by the the actual operating pressure is lower than the calibration plate reading, turn the lower spring retainer (using the 3/8” flats at the bottom of the load l operating is higher than the calibration reading, turn the load screw out of ainer, One-half turn of the load screw is less than 100 psi change on there is any error remaining after calibration, it should be on the low side so tes lower than calibration plate indication.

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I. Operational ChOperate the valve between parts: AllInterference betweremedied.

II. Calibration InA. For calibration pressure (See calibthe lag in the gaugpressure pulsation

B. Screw down theplate. Apply presspressure gauge. Usspring retainer if ascrew out if actualcalibration is attainplate. If there is anthe valve operates

C. Check high calitest pressure until gauge. See chart b

D. Check low calibpressure until the vgauge. See chart b

E. Valve Pres

400 psi – 7


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RESET RELIEF VALVE TEST PROCEDURE

eck using the release button to determine that there is no binding or interference moving parts, especially the linkage assembly, should work freely, en moving parts will cause the valve to operate inaccurately and should be

structions purposes, an accurate pressure gauge should be connected to read the line rating instructions). The line pressure should be built up slowly to allow for e reading. If possible, the line pressure should be built up with little or no .

adjusting nut until the indicator is approximately mid-range on the calibration ure until the valve operates, noting the actual line pressure as indicted by the ing the 3/8 flats at the bottom of the load screw, turn the screw into the lower ctual operating pressure is lower than calibration plate reading, and turn the pressure is high. Operate valve again, and repeat adjustment until good ed. One-half turn of the load screw is less than 100 psi change on calibration y error remaining after calibration, it should be an error to the low side so that lower than calibration plate indication.

bration by aligning indicator with high set point on calibration plate. Apply the valve operates, noting the actual line pressure as indicated by the pressure elow for acceptable tolerance of set point with respect to actual “trip” pressure.

ration by aligning indicator with low set point on calibration plate. Apply test alve operates, noting the actual line pressure as indicated by the pressure

elow for acceptable tolerance of set point with respect to actual “trip” pressure.

sure Range Acceptable Tolerance

,500 psi ±150psi

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F. If valve is withivalve is not withinRepeat this entire

III. Hydrostatic P

A. Any in-plant ormaximum values:

3 inch relief valves

B. Hold hydrostati

C. Re-pressurize vleakage, bleed pres


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n acceptable tolerances at both high and low set points, mark load screw. If acceptable tolerances, replace springs or look for mechanical problems. procedure after reworking valve.

ressure Testing

customer witness hydrostatic pressure testing will be limited to the following

-------- 7,500 psi (Type “CX”)

c pressure for 3 minutes and check for leakage, bleed pressure to zero.

alve to the specified pressure required and hold for 15 minutes. Check for sure to zero, test is complete.

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CALIBRATION TOL

The calibration toleranrange(s) as follows:

For valves set at l,500

For valves set at 2,500




Patent Pending RRValve™

5201


PRODUCT BULLETIN ERANCES FOR RR VALVE, INC RESET RELIEF VALVES (RRV’S)

ce of RR Valve, Inc. RRV’s is dependent on their operating pressure

psi maximum pressure, the tolerance is ± l00psi.

psi maximum pressure, the tolerance is ± l50psi.

psi maximum pressure, the tolerance is ± 150psi.

psi maximum pressure, the tolerance is ± 150psi.

psi maximum pressure, the tolerance is ± 150psi

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Mitchelldale #A11 Houston, Texas 77092 713-682-8875


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STORAGE AND PR(RRV’S)

RR Valve, Inc. RRVambient conditions o

For longer periods oairtight plastic bags are allowed to degra

The interior metal padesired. Painted partnear seawater, then a

After long periods oThe test and calibratproduct.

Patent Pending RRValve™

520


PRODUCT BULLETIN

ESERVATION OF RR VALVE, INC. RESET RELIEF VALVES

’s of all types may be stored in open air for up to 6 months, providing f 5º F to 115º F, and average relative humidity not lower than 15%.

f storage, the rubber goods should be removed upon delivery and sealed in and kept away from heat (over 115º F) and direct sunlight. If rubber goods de, they should be replaced (rubber goods repair kits are available).

rts of the valve can have a light coat of oil or light grease to prevent rust if s need no preservation if ambient conditions are as above. If the storage is ll surfaces should be lightly oiled to prevent rust.

f storage (6 months or more), RRV’s should be tested before being used. ion procedures are detailed in the Maintenance Manual for the specific

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RR Valve “CX”-X8000 Center Lines with 1502 15,000psi 3” Hammer Unions



Maintenance Technical Bulletin 2

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Transcript of Maintenance Technical Bulletin 2