DV82 Diaphragm Valves

FeaturesSuitable for high purity applications
316L Stainless Steel enhances, welding and corrosion resistance
Both manual and pneumatic actuator are available
Face sel fittings (FSR), compression tube fittings and butt weld connections
Internal spring
Metal-to-metal diaphragm seals
High cycle life
100% Helium leak tested


Materials of Construction*Wetted:Body - 316L stainless steelSeat - PCTFE, VespelDiaphragm - Elgiloy (Pneumatic actuator) 316L stainless steel (Manual)*Non-wetted:Nut - 316 stainless steelKnob - aluminumOperating ConditionsMaximum operating pressure - 3500 psig (240 barg): Pneumatic and manual actuatorMinimum operating pressure - vacuumTemperature - -40F to 150F (-40C to 65C)Functional PerformanceFlow Capacity - Cv=0.16Designed Leak Rate:Inboard Leakage - 2 x 10-10 atm cc/sec HeOutboard Leakage - 1 x 10-9 atm cc/sec HeAcross seat Leakage - 4 x 10-9 atm cc/sec HeDesigned Proof Pressure - 150% of maximum rated pressureDesigned Burst Pressure - 400% of maximum rated pressureSurface FinishStandard Ra (BA) - 15-20uinInternal Volume0.8 cc* 1. Don't supply Vespel seat with low pressure pneumatic actuaton valve2. Recommended for Nitrous Oxide (N2O) service

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