Fisher™ 634 Series High-Pressure Shutoff Valves
Fisher Types 634 and 634M high-pressure shut-off valves serve to provide overpressure protection by containment. Type 634 shut-off valve with internal registration is installed between a pressure reducing regulator and a downstream system or equipment. Type 634M shut-off valve with external registration requires a control line and is installed upstream of a pressure reducing regulator.
FeaturesOverpressure Protection without Discharge of GasPositive ShutoffApplication VersatilityEasy MaintenanceSpecificationsBody Sizes and End Connection Styles3/4 or 1 NPTMaximum Inlet Pressure1500 psig / 103 barMaximum Outlet (Casing) PressureType 634: 150 psig / 10,3 bar
Type 634M: 1500 psig / 103 bar
Pressure RegistrationType 634: Internal
Type 634M: External
Temperature Capabilities-40° to 180°F / -40° to 82°CApproximate Weight10 pounds / 4 kg
