Related Manuals for Flowsafe F70U Series
Summary of Contents for Flowsafe F70U Series
- Page 1 F70U SERIES UNLOADER VALVE INSTALLATION, OPERATION, & MAINTENANCE MANUAL Revision: Date of Issue: Jan. 31, 2022 Approved by: Engineering Projects Dir. Sr. Design Eng.
-
Page 2: Table Of Contents
Testing of the Main Valve Assembly ............ 10 Final Assembly Testing ................ 10 Troubleshooting Guide ................. 11 Accessories Softgoods Kits ..................12 Internals Kits ..................12 Illustrations F70U Series, Main Valve 1-1/2x3 ………………..........7 F70U Series, Main Valve 2x3 and Larger ………………......... 8... -
Page 3: General
This manual is intended to provide users with direction and guidance for the maintenance of FLOW SAFE F70U Series valves. This manual indicates the proper method of valve disassembly, soft goods replacement, and valve reassembly. FLOW SAFE provides this manual as a guideline and reference only. -
Page 4: Description, Operation, Service Envelope, Installation, & Startup
CLOSED OPEN The FLOW SAFE F70U Series unloader valve provides a means to control flow for a variety of process flow applications, such as compressor and blower unloading. It is designed to be repeatedly cycled at full pressure throughout its range of rated temperatures. -
Page 5: Service Envelope
INSTALLATION, OPERATION, & MAINTENANCE MANUAL TITLE: F70U Series Rev. E Unloader Valve Page 5 of 12 SERVICE ENVELOPE PROCESS TEMP., UNLOADING PRESSURE, SEAT MATERIAL F (°C) psig (barg) Min. Max. Min. Max. Buna-N -30 (-34) 275 (135) 5 (.34) 285 (19.6) Viton ®... -
Page 6: Startup
Inspection and maintenance should be performed on a regular basis, typically once a year, depending on the service conditions. MAIN VALVE MAINTENANCE DISASSEMBLY OF THE F70U SERIES MAIN VALVE (See illustrations on Pages 7 and 8.) CAUTION: Depressurize the system or safely block incoming line pressure before attempting to disassemble or remove any valve from the installation. -
Page 7: F70U Series, Main Valve 1-1/2X3
INSTALLATION, OPERATION, & MAINTENANCE MANUAL TITLE: F70U Series Rev. E Unloader Valve Page 7 of 12 F70U SERIES MAIN VALVE, 1.5x2 ASSEMBLY ILLUSTRATION DOME FEED BOLT/ PORT LOCKWASHER GASKET PISTON SEAL (TEFLON V-SEAL w/ SS SPRING) WEAR RINGS (SLYDRINGS) LINER... -
Page 8: F70U Series, Main Valve 2X3 And Larger
INSTALLATION, OPERATION, & MAINTENANCE MANUAL TITLE: F70U Series Rev. E Unloader Valve Page 8 of 12 F70U SERIES MAIN VALVE, 2x3 AND LARGER ASSEMBLY ILLUSTRATION LIFT BRACKET BOLT/ DOME FEED LOCKWASHER PORT LINER SEAL(S) (LOWER SEAL ON 4X6 & LARGER ONLY) -
Page 9: Reassembly Of The F70U Series Main Valve
Rev. E Unloader Valve Page 9 of 12 REASSEMBLY OF THE F70U SERIES MAIN VALVE (See illustrations on Pages 7 and 8.) Prepare new softgoods for installation. Take care in handling of all seats, seals, gaskets, and metal sealing surfaces. All parts should be clean and free of any debris or contaminants. -
Page 10: Testing Of The Main Valve Assembly
INSTALLATION, OPERATION, & MAINTENANCE MANUAL TITLE: F70U Series Rev. E Unloader Valve Page 10 of 12 TESTING OF THE MAIN VALVE ASSEMBLY When main valve has been reassembled, it should be tested for leakage and piston lift on a test stand according to the following. -
Page 11: Troubleshooting Guide
INSTALLATION, OPERATION, & MAINTENANCE MANUAL TITLE: F70U Series Rev. E Unloader Valve Page 11 of 12 TROUBLESHOOTING GUIDE Symptom Possible Cause Remedy The main valve leaks Cap bolt(s) loose, or insufficient / Retighten the cap bolts per Section around the cap or cap uneven bolt torque. -
Page 12: Accessories
INSTALLATION, OPERATION, & MAINTENANCE MANUAL TITLE: F70U Series Rev. E Unloader Valve Page 12 of 12 ACCESSORIES SOFTGOODS KITS X = Seat Material Valve Size Softgoods Kit Y = Liner Seal / Gasket Material Part Number Code 1-1/2 x 2...