INSTALLATION, OPERATION and MAINTENANCE Silent Check Valves RECEIVING AND STORAGE INTRODUCTION Inspect the valve upon receipt for damage This manual will provide the information to during shipment. Carefully unload all valves to properly install, operate and maintain the valve the ground without dropping. to ensure a long service life.
pattern in graduated steps. If leakage occurs INSTALLATION wait 24 hours and re-torque the bolts but do not GA Industries silent check valves must be compress the gasket more than 50% or exceed correctly installed for proper operation. The flow bolt maximum torque rating.
Set the valve on a flat, stable surface with the Genuine replacement parts are available from flow arrow pointing down. For Figure 280 globe your local VAG/GA Industries representative or style valves, remove the screws (7) and lift out from the factory: the seat (5), plug (4), spring (3) and bushing (2).
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Table 1 Butterfly Valve Clearance Size 2½” 1¾” 3” 1¾” 4” 1¾” 6” 2½” 8” 3¼” 10” 4¼” 12” Not applicable Figure 280 Globe Style Figure 290 Wafer Style Silent Check Valve Item Description Standard Material Body Cast Iron Bushing Bronze or SS Spring Stainless Steel...