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DV1 – 2-way Diaphragm Valve
The DV1 Series diaphragm valves are totally free of springs, bellows, packing, dynamic O-rings and lubricants in the process wetted area. Metal-to-metal seals to atmosphere ensure that there is no transport of undesirable elements into the flow stream and no escaping of process material into the atmosphere. Elgiloy® diaphragms ensure the utmost in corrosion resistance and extend overall life.
- 2-Way on/off control
- Metal-to-metal seals to atmosphere to prevent leakage
- Wide choice of materials for virtually all applications
- No dynamic O-rings, springs or lubricant in wetted flow path to eliminate sample contamination
- Very low internal volume (0.16 cc) for low purge time
- Replaceable valve seats for longer service life
- Manual ¼-plus turn or pneumatic actuation
- Multiple stacked diaphragms for extended service life and added safety
- Pressures from vacuum (50 torr) to 500 psig (34 barg) – Consult factory for higher pressures
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DV1 Series Manual ¼-plus turn Valves
| Body | 316L Stainless Steel, Monel® and Hastelloy® C-276 |
| Seats | PCTFE and PEEK™ |
| Diaphragms | Elgiloy®AMS 5876 |
| Orifice Size | 0.110˝ (2.8 mm) |
| Flow Capacity | 0.17 Cv |
| Valve Internal Volume* | 0.16 cc |
| External Leakage | 1×10-5 cc/sec helium (inboard) |
Operating Temperatures
| Seat Material | ¼-PLUS TURN TEMPERATURE |
| PCTFE | -40° F to +212° F -40° C to +100° C |
| PEEK™ | 0° F to +400° F /-18° C to +204° C |
Operating Pressures
| Operating Pressure* | Vacuum (50 torr) to 500 psi (34 bar) |
| Proof Pressure | 2000 psig (138 barg) |
| Burst Pressure | 8000 psig (552 barg) |
Support Materials
Flow Formulas