Diaphragm Valves
Diaphragm Valves DV1, DV2 & DV3 Features
Maximum working pressure: 300 psig (20.7 bar)
Working temperature: -20℉ to 300℉ (-28℃ to 148℃)
Variety of end connections
Body material: Cast, forged and bar stock stainless steel
No spring or thread within wetted area for cleaner operation
Wetted surface finish machined to an average of 0.51 µm Ra for cast body, elctropolished to 0.25 µm Ra for forged and bar stock body
PCTFE stem tip insert for leak-tight shutoff
Unique bonnet design for safety
Diaphragms welded to the stem for leak-tight performance
Optimum combination of strength, flexibility and cycle life by three diaphragms
The upper stem as a indicator of the valve position-open or closed
Diaphragm Valves D4 Features
Maximum working pressure: 3500 psig (241 bar)
Working temperature: -100℉ to 250℉（-73℃ to 121℃ ）
Repetitive shutoff with fully contained softseat stem tip
Position indicator ring for lever handle
Manual or penumatic actuation
Aluminum piston accelerated open/close speed
Helium leak tested, maximum leak rate of 4-9 x10 std cm3/s
Different handle types and colors are available
Can be used in vacuum applications
Diaphragm Valves DV5 Features
316L VIM-VAR stainless steel body is available
Suitable for ultrahigh-purity applications
Elgiloy material for strength and corrosion resistance for long cycle life
Fully contained PCTFE seat design provides excellent resistance to swelling and contamination
Wetted Surface Electropolished, Roughness Ra finished to an average of Ra5 μin.(0.13 μm)
Helium leak tested, maximum leak rate of 1×10-9 std cm3/s
Low-pressure and high-pressure models
Manual or pneumatic actuation
Aluminum piston accelerated open/close speed
Different handle types are available
Can be used in vacuum applications