NABIC Fig 256A Pipe Interrupter

Product Description

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

The NABIC Fig 256A is classified as a DC type suitable for protecting up to fluid category 5. Incorporating ventilation ports that are totally unrestricted and permanent, water is guided past these air vents using a venturi type nozzle. Since they are constantly open to atmosphere this stops siphonage and allows the escape of water in the event of backflow. 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 O-rings
Pressure: 10 Barg Max
Temperature: 60 degC Max
Notes: The 1" is no-longer manufactured. The N-256A-015S is a low flow version of the standard N-256A-015.

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