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Gasonics AWD-D-3-8-007 Pneumatic Diaphragm Valve
Introduction:
The AWD-D-3-8-007 is another variant in the 3/8-inch diaphragm valve series. The “007” suffix often denotes a modified internal porting or a specific orifice size designed to maximize flow conductance (Cv) while maintaining diaphragm isolation. This variant is selected when flow restriction must be minimized in critical gas lines.
Technical Specifications:
- Port Size: 3/8 inch
- Body Material: 316L Stainless Steel
Detailed content
- Diaphragm Material: Reinforced PTFE with EPDM backing or similar composite
- Flow Coefficient (Cv): Higher than standard variants (typically > 1.0)
- Actuation Pressure: 60-100 PSI
- Maximum Differential Pressure: 100 PSI
- Leak Rate: < 1 x 10^-6 scc/s He
- Internal Finish: Electropolished internal bore to reduce friction and particle traps
Functional Features:
- Optimized Flow Path: Streamlined internal geometry reduces pressure drop across the valve, crucial for high-flow applications.
- High Conductance: Allows for rapid evacuation or gas filling of small volumes.
- Robust Diaphragm: Reinforced design prevents diaphragm rupture under high differential pressure conditions.
- Low Dead Volume: Minimizes the volume of gas trapped in the valve when closed, reducing purge times.
- Vibration Resistance: Designed to withstand vibrations from vacuum pumps and factory equipment without loosening.
Application Scenarios:
- High Flow Gas Lines: Main supply lines for carrier gases (N2, He) where high volume is required.
- Fast Evacuation Lines: Valves used in rapid pump-down paths to minimize cycle time.
- Bypass Lines: Used in parallel with MFCs for fast evacuation or rough pumping.
- Vent Lines: Large bore for rapid venting of chambers to atmosphere.
- Abatement Bypass: Routing high-volume exhaust flows around abatement units during standby or fault conditions.
