NABIC Fig 256B Pipe Interrupter

Product Description

This is a stock item. Order by 5pm for Sameday despatch.

The NABIC Fig 256B is classified as a DB type suitable for protecting up to fluid category 4. This device has a moving element which seals the ventilation gaps during normal flow conditions. When negative pressures occur on the inlet side which could cause siphonage, the membrane retracts seals the flow ports and simultaneously vents the outlet side of the pipe interrupter. We have an interesting article relating to Backflow Prevention in the Technical section on this website.

Sizes: 3/8" (DN10), 1/2" (DN15), 3/4" (DN20)
Connections: Male BSP Inlet x Male BSP Outlet
Materials: Brass body, Plastic internals
Joints & Seals: EPDM Membrane
Pressure: 10 Barg Max
Temperature: 60 degC Max

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