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.