- Suitable for high purity applications
- 316L Stainless Steel enhances weldability and resistance to corrosion
- Face seal fittings (FSR) or butt weld connections, compression tube fittings
- Designed for very low particle generation
- Metal-to-metal diaphragm seals
- High-cycle life
- 100% Helium-leak tested
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| DV88 Series Diaphragm Valve |
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Materials of Construction
| Wetted |
| Body | 316L stainless steel |
| Seat | PCTFE |
| Diaphragm | Elgiloy® |
| Non-wetted |
| Nut | 316 stainless steel |
| Knob | aluminum |
| Operating Conditions |
| Maximum operating pressure: | 3500 psig (240 barg)
1500 psig (100 barg) |
| Minimum operating pressure: | vacuum |
| Temperature | -40°F to 150°F (-40°C to 65 °C) |
| Functional Performance |
| Flow Capacity | Cv=1.0 (3500psig)
Cv=1.7 (1500psig) |
| Maximum Leak Rate: | |
| Inboard Leakage | 1 x 10-9atm cc/sec He |
| Outboard Leakage | 1 x 10-9atm cc/sec He |
| Across Seat Leakage | 4 x 10-9atm cc/sec He |
| Proof Pressure | 150% of maximum rated pressure |
| Burst Pressure | 400% of maximum rated pressure |
| Surface Finish |
| Standard Ra | 20 μin |
Dimensions
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Pneumatic Actuator (HP)
Pneumatic Actuator (LP) Note: All dimensions are reference
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| Face Seal Male Fittings | Compression Tube Fittings | Tube Weld Stub |