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
This DCS (Diaphragm Design) valve series is intended for bulk gas or solvent double containment distribution service where cleanliness and purity are of the utmost importance. These springless, packless, diaphragm valves control the passage of gas or solvent through the primary tube while providing a complete secondary containment flow path. The secondary flow path remains open regardless of the primary passage being opened or closed.
Key Specifications
| Materials of Construction | Cleanliness | Specifications | Options |
|---|---|---|---|
| 316L stainless body |
Manufactured in ISO Class 4 Cleanroom |
100% leak tested using mass spectrometer to 1x10^-9 scc/s under vacuum and 1x10^-6 scc/s under pressure |
Manual or pneumatic |
| 316L Diaphragm (both flow paths) |
Zero particles @0.1µm in static conditions |
<10Ra micro-inch surface roughness |
PI seat high temperature (up to 150C) |
| Barstock-only source |
<10ppb O2/H20 outgassing |
250 PSI Max operating pressure |
Position Sensing (Pneumatic only) |
| PCTFE standard seat (minimal volume) |
Cleaned using DI water & oven baked |
0.41 – 1.2 Cv (flow coefficient) |
Solenoid Actuation (Pneumatic only) |