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F88 SERIES

SPRING-OPERATED

SAFETY RELIEF VALVE (GAS/LIQUID)



PLASTIC-SEATED



-3, -4, -8, -G, -J Orifices

INSTALLATION,

OPERATION, & MAINTENANCE MANUAL

Revision:

Date of Issue:

Oct. 6, 2021

Approved by:

jwo

Engineering Projects Dir.

Sr. Design Eng.

Содержание F88 Series

Страница 1: ...ING OPERATED SAFETY RELIEF VALVE GAS LIQUID PLASTIC SEATED 3 4 8 G J Orifices INSTALLATION OPERATION MAINTENANCE MANUAL Revision E Date of Issue Oct 6 2021 Approved by jwo GG Engineering Projects Dir...

Страница 2: ...lve Maintenance 3 1 Disassembly 7 3 2 Reassembly 7 4 0 Valve Testing and Adjustment 4 1 Test Equipment 8 4 2 Setting Adjustment Tolerances 8 4 3 Set Pressure Adjustment 9 4 4 Seat Tightness 9 4 5 Lift...

Страница 3: ...ng this allowance is not recommended Cycling the valve at least once a year is considered to be good practice to verify operation and to confirm that parts are not seized 3 When a new valve leaves FLO...

Страница 4: ...is plastic seated with a plastic seal Orifice sizes are available in 3 4 8 G and J with set pressures as referenced in 2 2 Blowdown is nonadjustable designed to be approximately 20 At low flow rates...

Страница 5: ...pplication with factory 2 3 INSTALLATION Prior to installation check that the set pressure on the nameplate is as required and meets the system requirements The F88 Series safety relief valve should b...

Страница 6: ...en during normal system operation Use only the wrench flats on the valve inlet bushing taking care not to make any wrench marks for tightening and installation Do not wrench on the cast body or bonnet...

Страница 7: ...ached bonnet base if an older F88 4 or 8 with the base held to the bonnet by a retaining ring 7 For the G and J orifices make sure the four small pipe plugs are securely in place in the top of the bod...

Страница 8: ...lever housing and then the bushing seals shaft lift lever and lock nut 13 Ensure that the rear bolt and seal are secured in the back of the body 14 The valve is now completely assembled and ready to...

Страница 9: ...ghtness should meet the criteria stated in Section 4 2 2 If the valve leaks after repair refer to the troubleshooting guide in Section 6 0 Check for Even seating between the spindle and bushing With t...

Страница 10: ...F88 CL XT F88 GL XT F88 JL XT Code X Seat Material Y Seal Material Spindle T K W P F Teflon PCTFE Kel F Vespel PI PAI PEEK Ekonol filled Teflon Most common materials listed contact Flow Safe for avai...

Страница 11: ...ve leaks through the atmospheric vent hole in bonnet Worn damaged spindle seal Disassemble valve remove spindle assembly and inspect spindle and seal on upper neck Look for nicks tears or flat spots R...

Страница 12: ...ease inlet pressure Confirm pressure gage is calibrated Isolation valve is closed Open isolation block valve The valve chatters or rapid cycles The valve is oversized for the application Install small...

Страница 13: ...for typical lift lever assembly SPRING BONNET SPINDLE CAP SEAT PLASTIC LOCKWIRE LEAD SEAL SPRING WASHER PA SCREW CAP PA SCREW LOCK NUT BUSHING REAR SEAL BOLT LOCKING THREAD INSERTS BUSHING SEAL RETAI...

Страница 14: ...16 for typical lift lever assembly SPRING BONNET SEAT PLASTIC PA SCREW CAP PA SCREW LOCK NUT BUSHING BOLT LOCKING THREAD INSERTS PRESSURE ADJUSTMENT PA SCREW REAR SEAL RETAINER SCREW 3 4 SHOWN SPINDLE...

Страница 15: ...XL Bolted Bonnet See Page 16 for typical lift lever assembly BUSHING LOCKING THREAD INSERTS V SEAL BONNET BOLT LOCKWASHER CAPSCREW NUT LOCKWASHER BODY SPINDLE ADAPTER PLATE SPRING SPINDLE CAP BONNET P...

Страница 16: ...G SEAL RETAINER PIPE PLUG SPRING SPRING WASHER BUSHING RETAINER SCREW NUT LOCKWASHER BONNET BOLT BONNET BODY REAR SEAL BOLT SEAT PLASTIC PRESSURE ADJUSTMENT PA SCREW PA SCREW CAP PA SCREW LOCK NUT HOU...