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SD4 Series - Double Seal Valves
Product Type(s) :
Series :
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