cashco POSR-1 Installation, Operation & Maintenance Manual Download Page 12

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ITEM

NO.

DESCRIPTION

Body

Spring

Chamber

Plug & Seat Assembly

4.1

Valve

Seat

4.2

Valve

Plug

Screen

Spring

Valve Seat Gasket

Body

Cap

Stem

ITEM

NO.

DESCRIPTION

Bellows

Subassembly

Diaphragm

Gasket

Pressure

Plate

Range

Spring

Button

Cap

Screw

Hex.

Nut

Adjusting

Screw

Adjusting Screw Lock Nut

Nameplate

Bleed

Orifice

ITEMS NOT SHOWN

Handwheel

Locking

Lever

Spring

FIGURE 4

PV – PILOT VALVE

Int

Cashco, Inc.
P.O. Box 6
Ellsworth, KS 67439-0006
PH (785) 472-4461
Fax. # (785) 472-3539
www.cashco.com
email: [email protected]
Printed in U.S.A. IOM-POSR-1

Cashco do Brasil, Ltda.
Al.Venus, 340
Indaiatuba - Sao Paulo, Brazil
PH +55 11 99677 7177
Fax. No.
www.cashco.com
email: [email protected]

Cashco GmbH
Handwerkerstrasse 15
15366 Hoppegarten, Germany
PH +49 3342 30968 0
Fax. No. +49 3342 30968 29
www.cashco.com
email: [email protected]

Summary of Contents for POSR-1

Page 1: ...led 3 Pipe unions are recommended for NPT screwed installations to allow removal from piping 4 An outlet pressure gauge should be located approximatelytenpipediametersdownstream and within sight FIGURE 1 Recommended Piping Schematic for POSR 1 FIGURE 2 Recommended Piping Schematic for POSR 1 20 WARNING Do not dead end no flow demand downstream of POSR 1 if P1 Inlet Pressure is greater than maximum...

Page 2: ...he maximum allowable outlet pressure rating of the unit 6 Cleanthepipingofallforeignmaterialincluding chips welding scale oil grease and dirt before installing the regulator Strainers are recommended III PRINCIPLE OF OPERATION A General 1 The POSR 1 pilot obtains its operating medium from the main valve body inlet Downstream pressure P2 registers on the underside of the main valve s diaphragm and ...

Page 3: ...oint 6 Ifthedownstream P2 pressurerisesabovethe setpoint theforcedevelopedbytheincreased pressure on the underside of the diaphragm instantly moves it upward and partially closes the main valve s plug Simultaneously the pilot valve s plug partially closes and allows Outlet Pressure P2 psig Barg Loading Pressure P3 psig Barg P1 Minimum P1 Maximum 5 0 34 15 1 03 25 1 7 50 3 45 60 4 1 70 4 8 100 6 90...

Page 4: ...ter around the pilot valve PV Cashco always recommends full maintenance on any POSR 1 pilot valve PV once a POSR 1 is removed from the pipeline B Separation 1 Observe position of pilot valve PV with respect to main valve MV before disassembling 2 Place main valve body 1 into a vise oriented to allow rotation of pilot valve PV together with interconnecting pipe nipple 19 3 Removeloadingtubing 21 at...

Page 5: ...the 0 068 1 73 mm diameter bleed orifice located in the body cavity smaller of two holes of any film or other buildup material that might be restricting flow NOTE Any significant blockage of the bleed orifice will downgrade a POSR 1 s performance Ifabuildupisforming attemptto determine the cause and remove the source 12 Remove body 1 from vise and reorient with body cap 9 on top resecure body 1 in...

Page 6: ...andplug spring 7 with body cap 9 recess Rotate body cap 9 CW viewed from above until shouldering on body 1 Hammer rap wrench handle to ensure tightness 28 Removebody 1 fromviseandrepositionwith diaphragm flange oriented on top 29 Place thread sealant lubricant onto threads of bellows 11 Insert flat end of stem extension 10 into the center of the bellows 11 chamfered end of stem extension 10 should...

Page 7: ...body 1 cavity 6 Remove body 1 from vise rotate body 1 with body cap 4 directed upwards and re secure body 1 in vise 7 Loosen and remove body cap 4 using a hex head wrench with a lever length of at least 15 inches The wrench should be rapped with a hammer to loosen 8 Remove piston spring 6 piston 3 2 and cylinder 3 1 Inspect parts for excessive wear especially at seat surfaces Replace if worn 9 Rem...

Page 8: ...otvalve PV CW viewedfromabove pilot valve into open end of interconnecting pipe nipple 19 Using a pipe wrench tighten the pilot valve PV to the main valve MV by turning the pilot valve PV until tight and in proper orientation with respect to each other 5 Reinstall interconnecting tubing 21 between mainvalve MV loadingchamber 2 andpilot valve PV body 1 6 Leak test the combined unit per Section VII ...

Page 9: ...rew until fully loose Keep track of the number of revolutions in the box below No ofRevolutionsadjustingscrewrotated __________________ 7 Connect temporary air supply with in line adjustable airset regulator to P2 outlet of pilot Slowly pressurize the pilot valve PV while observing the jar with water Bring pressure to 50 psig 3 4 Barg Wait a minimum of five minutes Observeforleakageofbubblesinthe ...

Page 10: ...s alpha character that reflects revision level for the product PARTS KIT for FIELD REPAIR Contact your local Cashco Inc Sales Represen tative with the Serial Number and Product code Identifythepartsandthequantityrequiredtorepair the unit from the BOM sheet that was provided when unit was originally shipped NOTE Those part numbers that have a quantity indicated under SpareParts incolumn A reflectmi...

Page 11: ...er Piston Subassembly 3 1 Cylinder 3 2 Piston 4 Body Cap 6 Spring 8 Cylinder Gasket 9 Shield 10 Socket Head Cap Screw 11 Pusher Plate 12 Diaphragm ITEM NO DESCRIPTION 13 Diaphragm Gasket 14 Cap Screw 15 Nut 16 Nameplate 17 Drive Screw 23 Pipe Plug Not Shown on Drawing 19 Pipe Nipple 20 Tube Fitting 21 Tubing ...

Page 12: ...ock Nut 21 Nameplate 25 Bleed Orifice ITEMS NOT SHOWN 22 Handwheel 23 Locking Lever 24 Spring Pin FIGURE 4 PV PILOT VALVE PInt P2 Cashco Inc P O Box 6 Ellsworth KS 67439 0006 PH 785 472 4461 Fax 785 472 3539 www cashco com email sales cashco com Printed in U S A IOM POSR 1 Cashco do Brasil Ltda Al Venus 340 Indaiatuba Sao Paulo Brazil PH 55 11 99677 7177 Fax No www cashco com email brazil cashco c...

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