GA - Series 922 - High Capacity Compound Lever Air Release Valve - Data Sheet

AIR RELEASE VALVESA Product of GA Industries Page 10HIGH CAPACITYCOMPOUND LEVERPressure Type Air Release Valve FIG. 922HI-CAPACITY AIR RELEASE PARTS LISTENGINEERING DATAFIG. 922GENERAL DIMENSIONSVALVE VALVE A B WEIGHT(INLET) (OUTLET) (SQUARE) (HEIGHT) (LBS.)1/2” NPT 6-3/8” 12” 402” NPT3” NPTPressure Rating:Valve body rated 300 psi WOG, tested to 450 psi.Float tested to 1000 psi.Working Pressure:10-150 psi with 3/8” orifice (Standard-Fig. 922)10-300 psi with 7/32” orifice (Optional-Fig. 922-H)CONSULT FACTORY IF OPERATING PRESSURE IS LESS THAN 10 PSI.Maximum Venting Rate:Fig. 922 @ 150 psi with 3/8” orifice = 234.8 SCFMFig. 922-H @ 300 psi with 7/32” orifice = 152.6 SCFMFOR SIZING AND LOCATING SEE PAGES 16-17. OTHER ORIFICES AVAILABLE; CONSULT FACTORY.Where to Install Air Valves:1. Peaks2. Increased Down Slope3. Decrease in Upward Slope4. Long Ascents5. Long Descents6. Long Horizontals7. Pumps8. Large Valves, Cylinders and Piping LoopsThe Air Release Valve shall be float operated and shall incorporate a compound lever mechanism to enable the valve toautomatically release accumulated air from a fluid system while that system is pressurized and operating.The Air Release Valve shall close drop tight, incorporating an adjustable Buna-N orifice button. All internal metal parts shall becapable of withstanding a test pressure of 1000 PSIG. The link-age/lever mechanism shall be able to be removed from the valvewithout disassembly of the mechanism, and shall be designed to prevent jamming.The body and cover shall be of cast iron conforming to ASTM A126 Class B, and shall be designed to withstand a test pressure of 450 PSIG.The Air Release Valves shall be as manufactured by GA Industries, Inc., their Figure 922 (formerly Figure 2-LAR and 3-LAR).ENGINEERING SPECIFICATION1. BODY - Cast Iron A126 Class B2. COVER - Cast Iron A126 Class B3. LEVERAGE BRACKET - 316 Stainless Steel4. ORIFICE - 316 Stainless Steel5. BRACKET CAP SCREWS - 18-8 Stainless Steel6. BRACKET LOCKWASHERS - 18-8 Stainless Steel7. ORIFICE BUTTON - 18-8 Stainless Steel8. HEX NUT - 18-8 Stainless Steel9. LOCKWASHER - 18-8 Stainless Steel10. O-RING - Buna-N11. LEVERAGE ARM - 316 Stainless Steel12. FLOAT ARM - 316 Stainless Steel13. COILSPRING PIN - 302 Stainless Steel14. VALVE LINK (Air Release) - 316 Stainless Steel15. PIVOT LINK - 316 Stainless Steel16. FLOAT CAP SCREW - 18-8 Stainless Steel17. PIPE PLUG 1/2” NPT - Steel (Commercial)18. PIPE PLUG 1” NPT - Malleable Iron19. PIPE PLUG 2” NPT - Cast Iron20. FLOAT CAP SCREW - 18-8 Stainless Steel21. FLOAT BALL - 316 Stainless Steel