High Pressure manual line valve for UHP gases – D639S
High Flow Line Valve - tied diaphragm double seal
Key advantages
- Combined soft and metal seat design with low permeation rate.
- Welded diaphragms provide a high leak tightness integrity
- Tied diaphragm design which minimizes gas wetted volume to allow easy purging.
- No moving components in the gas wetted area to not generate particles.
- Secondary sealing to prevent the gas coming in contact with actuator in the case of diaphragm failure.
- Threaded weep hole for leak test and pipe away connection (M4 thread), allows the connection to a leak detector.
- Front and back panel valve fixation
Specifications
| Connections | According (inter-)national standards, customer’s specifications |
| Working pressure | 200 bar |
| Nominal flow rate | CV = 0.5 |
| Temperature range | -40 to +65 °c |
| Body materials | SS AISI 316L (standard) |
| Leak rate | 1.10-8 m bar L/s |
| Seat orifice size | 6 Mm |
| Marking | 3 stars, valve number, manufacturing date, Nominal pressure and flow direction, π0029 (if according to TPED) |
Dimensional drawings
Downloadable catalogs, brochures
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