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Swagelok DE Series Springless Diaphragm Valves for Modular Gas Systems

Swagelok® Springless Diaphragm Valves for Modular Gas Systems (DE Series)

DE series springless diaphragm valves for 1.125 in. C-seal or W-seal modular gas systems are easy to install, provide a visual indication of flow direction, and have a seat design that improves thermal stability.

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DE series springless diaphragm valves are easy to install due to the fixed orientation of the actuator to the body in both pneumatic and manual lockout actuation options.

The valve design includes a fully contained PFA seat for minimal particle generation, a weld isolation ring for enhanced diaphragm cycle life, and a fully swept flowpath in the body which minimizes entrapment areas and facilitates purging.

Specifications

Working Pressure Vacuum to 125 psig (8.6 bar)
Burst Pressure >3200 psig (220 bar)
Actuation Pressure
Normally Closed 60 to 120 psig (4.1 to 8.2 bar)
Normally Open and 60 to 90 psig (4.1 to 6.2 bar)
Normally Closed with manual
Integral lockout override
Temperature 14° to 150°F (–10° to 65°C)
Flow Coefficient 0.3
Body Materials 316L VIM-VAR stainless steel
Diaphragm Material Cobalt-based superalloy
End Connections
Type 1.125 in. modular surface mount (MSM)
Configurations 2-port and 3-port

DE Series Springless Diaphragm Valves Catalogs

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