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SD4 Series - Double Seal Valves
FEATURES
DELTA SD4 valves are (double seal) safe flow valves designed for safe media separation applications in the food, beverage, dairy, pharmaceutical and chemical industries. It is available as a shut-off, change-over and tank bottom valve. Other configurations are available on request. The DELTA SD4 valve is available as a shut-off valve in 4 standard housing configurations. Other configurations are available on request.
Advantages
- Leakage chamber arranged between the seat seals; the leakage chamber being forcibly closed (open valve) by the two leakage discharge valves (NO) or opened to the atmosphere (closed valve).
- Excellent hygienic characteristics primarily due to the ball-shaped housing without sump or dome.
- Profile seat seals providing crevice-free sealing and the compression of the seat seals is controlled by a metallic stop.
- Leakage discharge valves to drain the neutral area between the seat seals. The leakage discharge valves (activated together with main actuator) are also used as flush - enabling CIP and SIP cleaning of the neutral area.
- Actuator and control unit are standard parts from the SW4 product line. Additionally, a NOT element is fitted to the control unit as standard enabling to maintain higher line pressures.
Sizes: 1" - 4" / DN25 - DN100 Product Wetted Parts: AISI 316L / 1.4404 Non-Product Wetted Parts: AISI 304 / 1.4301 Seal Materials:
- Standard EPDM
- Optional: HNBR, FPM
Min. Control Air Pressure: 87 PSI (6 bar) Max. Control Air Pressure: 116 PSI (8 bar)
SD4 Series Double Seal Valve Dimensions
View SD4 Series Double Seal Valve Dimensions in the Operation and instruction Manual
Valve configurations*:
Standard shut-off: DELTA SD4
Aseptic diaphragm valve: DELTA SDMS4
Change-over valve: DELTA SDU4
Tank outlet: DELTA SDT4
*Combinations of the configurations listed are also available, e.g. aseptic tank outlet version (DELTA SDTMS4) and aseptic change-over valves (DELTA SDMSU4).
Pressure Ratings:
Operating Pressure: Maximum line pressure: 145 psi (10 bar)
Temperature Ratings:
Operating temperature: Maximum 275ºF (135°C), Short time 284ºF (140ºC) - no steam