Bellows-Sealed Valves
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Low Pressure High Purity Bellows-Sealed Valves
▪ End Connection Size 1/4″ to 1/2″, 6 mm to 12 mm
▪ Max. Working Pressure: manual 34.4 bar (500 psig), pneumatic 10 bar (145 psig)
▪ Pneumatic Actuator Operating Pressure: 4.2 to 6.2 bar (60 to 90 psig)
▪ 100% Helium leaking tested
▪ Leak Rate (Helium): internal ≤ 4×10^-9 std cm³/s, external ≤ 4×10^-9 std cm³/s
▪ Metal-to-metal gasket seal without external leakage
▪ Manual and pneumatic actuator available
▪ Panel mounting and bottom mounting available
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High Pressure High Purity Bellows-Sealed Valves
▪ End Connection Size 1/4″ to 3/8″, 6 mm to 8 mm
▪ Orifice Size: 0.15 in. (3.8 mm), Cv. 0.30
▪ Max. Working Pressure: manual 241 bar (3500 psig)
▪ Pneumatic Actuator Operating Pressure: 4.2 to 6.2 bar (60 to 90 psig)
▪ 100% Helium leaking tested
▪ Leak Rate (Helium): internal ≤ 4×10^-9 std cm³/s, external ≤ 4×10^-9 std cm³/s
▪ Manual and pneumatic actuator available
▪ Bottom mounting
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Bellows-Sealed Valves
▪ Maximum working pressure up to 1000 psig (68.9 bar)
▪ Working temperature from -20℉ to 900℉ (-28℃ to 482℃ )
▪ Flow coefficients (Cv) from 0.12 to 1.2
▪ Variety of end connections316 S.S., brass and monel 400 materials
▪ Hydraulic-formed multilayer bellows for longer cycle life
▪ Panel and bottom mounting
▪ Bar, round handle are available
▪ Precion-formed metal bellows providers reliable seal
▪ Nonrotating stem tip: spherical, conical and regulating
▪ Gasket body to bellows seal is standard, weld seal also available
▪ Externally pressurized bellows design for maximum strength
▪ Replaceable bellows and stem assembly
▪ Each valve is 100% tested with helium for 10s to a maximum leak rate of 4 ×10-9 std cm3/s
