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Warning:

The Nord-Lock

®

washer (036-1) is in 2 parts.

Ensure there are correctly stacked like the Figure 10.

Nominal diameter Tightening torque
(mm)

m.daN

6

0.5

8

1

10

1.5

12

2.6

FIGURE 9-SEAT

TABLE 1 - TIGHTENING TORQUE

FIGURE 10-NORD-LOCK

®

STACKING

74LP PRESSURE RELIEF VALVE

SARASIN-RSBD

™

24

|

www.trilliumflow.com

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Содержание 74LP Series

Страница 1: ...74LP SERIES Installation Operation Maintenance Manual...

Страница 2: ...SERIES BASICS 10 7 1 DESCRIPTION 10 7 2 FEATURES AND NOMENCLATURES 10 8 INSTALLATION 11 8 1 GENERAL 11 8 2 INLET PIPING 11 8 3 OUTLET PIPING 12 8 4 INSTALLATION ON THE PROTECTED EQUIPMENT 12 8 5 OPTIO...

Страница 3: ...ION ATTENTION DANGER Immediate danger which WILL cause serious personal injury or death WARNING Risk or dangerous practice which COULD cause serious personal injury or death CAUTION Risk or dangerous...

Страница 4: ...tial dangers associated with the use of the product Whilst this document is intended to be informative it is important to understand that the safety messages provided are not exhaustive Trillium Flow...

Страница 5: ...is no remaining pressure upstream the valve and that the valve is isolated from the system pressure Before performing each pop test on the safety valve ensure that no personnel are close to the valve...

Страница 6: ...sTM to inspect the product Trillium Flow TechnologiesTM cannot be held responsible for any incorrect sizing and selection of a valve if the original specification supplied by the customer was incomple...

Страница 7: ...ro LIFT The actual travel of the disc away from closed position when a valve is relieving LEAK TEST PRESSURE Leak test pressure is the specified inlet static pressure at which a quantitative seat leak...

Страница 8: ...giesTM organisation 6 2 IDENTIFICATION PLATE The data shown on the identification plate figure 1 should be referenced with all requests for work or for the supply of spare parts The identification pla...

Страница 9: ...can cause permanent deformation to the spring Below than 5 adjustment can cause the pilot not to open fully For more than 5 adjustment you must contact Trillium Flow TechnologiesTM Sarasin RSBDTM Afte...

Страница 10: ...solid particles or foreign matter Wherever possible the valves should be stored in their original packaging Blanking plugs thread protectors and plastic covers should only be removed at the point of...

Страница 11: ...dance with ASME B16 34 ASME B PV Code section VIII div I design o 10 overpressure o Blowdown between 5 and 10 o Capacity certified gas National Board Semi nozzle design Body inlet connection Flanged P...

Страница 12: ...evelops quickly due to the high pressure The system should always be purged before safety valve is installed Prior to installation of the safety valves all protective covers must be removed It is reco...

Страница 13: ...low There must be no obstruction between the equipment and the safety valve The pressure relief valve must be mounted on the upper part of the equipment which it is to protect Recommendations The safe...

Страница 14: ...fety valve Most applicable codes recommend that the inlet piping system be designed for a maximum anticipated non recoverable pressure loss of 3 percent If this is not possible the remote pressure sen...

Страница 15: ...ase the pressure up to 80 90 of set pressure and then increase the pressure with a gradient around 0 1 Set pressure sec the pilot and the main valve dome are pressurized simulating an increased system...

Страница 16: ...oduction of outlet pressure into the dome of the main valve thereby holding the piston firmly onto the nozzle overcoming the effect of a reverse differential pressure across the safety valve The optio...

Страница 17: ...ost effective responsive manner If the safety valve is exposed to hazardous weather conditions ingress of dirt or other foreign matter or any extremes of temperature conditions please ensure that The...

Страница 18: ...in the event of any uncertainty Prior to performing any maintenance operation the system upon which the pressure relief valve is installed must not be pressurised 9 MAINTENANCE DANGER CAUTION CAUTION...

Страница 19: ...rew Plug Rep34 PILOT MAIN VALVE DISSASEMBLY Unscrew fitting CLVF and FLPF Unscrew Nuts 013 and remove Nord lock washers 012 Separate pilot support and tubing TAKE CARE OF THE TUBING FIGURE 1 PILOT MAI...

Страница 20: ...BLY Disassembly cover 002 Unscrew lifting lugs Unscrew nuts 050 and remove lock washers 050 1 Take the upper cover off 002 19 www trilliumflow com FIGURE 2 MAIN VALVE GENERAL VIEW 74LP PRESSURE RELIEF...

Страница 21: ...e Remove the diaphragm gasket 040 Put a lifting lug through the screw 018 and lift all the trim Only seat 006 remains in place FIGURE 3 DISASEMBLY TRIM MAIN VALVE 20 www trilliumflow com 74LP PRESSURE...

Страница 22: ...unscrew the screws 037 and remove it of the guide 009 To remove the primary seal 007 unscrew the screws 038 and remove the disc flange 016 Then unscrew the nut 019 and remove the primary seal 007 by h...

Страница 23: ...with abrasive paper grade 1000 or higher Inspect the seat housing for any deformation or erosion pitting Main valve studs nuts 035 050 Studs and nut shall be free of rust and threads free of deformat...

Страница 24: ...with the primary seal 007 If it is galled scratched corroded or pitted there shall be replaced Main valve diaphragm support and washer 021 022 Inspect each face of the diaphragm support and washer in...

Страница 25: ...ure there are correctly stacked like the Figure 10 Nominal diameter Tightening torque mm m daN 6 0 5 8 1 10 1 5 12 2 6 FIGURE 9 SEAT TABLE 1 TIGHTENING TORQUE FIGURE 10 NORD LOCK STACKING 74LP PRESSUR...

Страница 26: ...eplaced after each service Disc flange 016 Slightly grease the spherical screw 015 hinge surface sphere Tighten the screw 038 with Nord Lock washer 038 1 to torque show on Table 1 Grease the thread No...

Страница 27: ...Do not grease between the stem 012 and the guide sleeve 008 Put the gasket 040 on the lower cover 002 Stack parts as show in Figure 14 Tighten the screw 018 with Nord Lock washer 018 1 through the dia...

Страница 28: ...FIGURE 14 DIAPHRAGM ASSEMBLY 27 www trilliumflow com 74LP PRESSURE RELIEF VALVE SARASIN RSBD...

Страница 29: ...y the assembly will make impact marks on the primary seal and the disc seating surfaces The Main Valve cannot remain tight with such marks on those surfaces Cap 004 Insert the gasket 041 into the cap...

Страница 30: ...cking please refer to the Figure 10 Continue to tighten alternatively until the required torque is reached in 3 or 4 steps VALVE SIZE Inlet valve diameter Bolting diameter PTFE membran Elastomer membr...

Страница 31: ...s e c a f r u s t c a t n o c e h t t c e p s n I Part misalignment from the lower cover to the seat Check also the stem alignment and concentricity Disc hinge has not sufficient articulation Inspect...

Страница 32: ...E SARASIN RSBD 31 www trilliumflow com The use of spare parts which are not obtained from a genuine Trillium Flow TechnologiesTM source or a Trillium Flow TechnologiesTM accredited company exposes pro...

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