DCS Series

Ultra-High Purity Dual Containment Diaphragm Valves

The DCS series provide the safety of a complete secondary containment flow path, that remains open regardless of the primary passage being opened / closed, creating a sealed secondary barrier against the most toxic, corrosive, and dangerous gases.


Key Features

Available in line sizes up to ¾” (primary) / 1” (secondary)

Metal-to-metal external seals for both flow paths

Pneumatic or manual interchangeability

Fully metal-sealed secondary containment layer

Typical Applications

Lateral points-of-connection (POC), tool hook-up shut-off, ultra-high-purity gas control for point-of-use service, valve manifold boxes (VMB), gas distribution panels, gas sticks, and critical application containment functionality.

Key Specifications

Materials of Construction Cleanliness Specifications Options

316L stainless body

Manufactured in Class 10 Cleanroom

Leak tested using Mass spectrometer <1x10(-9) mbar.l/s

Manual or pneumatic

Stainless 316L Diaphragm (both flow paths)

Zero particles @0.1µm

<10Ra micro-inch surface roughness

PFA / PI seat high temperature (up to 150C)

Barstock-only source

<10ppb O2/H20 outgassing

Vacuum and pressure tested 100% production control

4/20mA switching / signalling automation

PCTFE standard seat (minimal volume)

Cleaned using 18.2MΩ·cm DI water

250p.s.i. operating pressure

0.41 – 1.2 Cv (flow coefficient)

View Data Sheet

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