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SD4 Series - Double Seal Valves

Product Type:
Valves / Double Seal Valves

Safe flow valve for safe media separation.

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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.
Specifications

All product-wetted parts are made of AISI 316L / 1.4404 (DIN EN 100888). Seat seal materials are EPDM (standard), HNBR, VMQ, FPM (options).

Available in DN 25 DN 100, 1 4.

Valve variants:

  • Standard shut-off version: SD4, SDE4
  • Long stroke shut-off version: SD4
  • Aseptic version (with PTFE diaphragm support): SDMS4
  • Change-over version: SDU4
  • Tank bottom version: SDT4
Videos
SD4 Double Seal Valve Maintenance Procedures - English
SD4 Double Seal Valve Maintenance Procedures - Chinese
DELTA SD4 Double Seal Valves - Open and Closed Positions
DELTA SD4 Double Seal Valves - NOT Element
DELTA SD4 Double Seal Valve - Cleaning in Open Position
DELTA SD4 Double Seal Valve Cleaning the Leakage Chamber
Downloads
Brochures
DELTA SD4 ID-8042 GB DE FR
Datasheets
Valve Key ID 8047 GB
Manuals
SD4 Double Seal Valve User Manual GB DE ES FR
SDMS4 Double Seal Valve with Diaphragm and Fan Support User Manual GB DE FR
SDMS4 Double Seal Valve with Diaphragm and Fan Support ATEX User Manual GB DE DK
SD4 Double Seal Valve ATEX User Manual DE GB DE