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) |