NABIC Fig 256B pipe interrupter is classified as a type DB device 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.
Size Range: DN10 - DN20
Pressure: 0.5 to 10 bar
Material: Chrome Plated Brass
Temperature: -20 to 60°C
Connection: Male inlet and outlet
Male BSP inlet and outlet connections: G3/8", G1/2" and G3/4" to ISO228A. DN15 and DN20 female connections G1/2" and G3/4" to ISO228
All valves are 100% production tested.
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The reason I went to NABIC was because we have to meet certain water regulations. After a chat with Northumbrian Water, they suggested looking into NABIC products as they are WRAS approved and suitable to use on all potable water applications.
I went direct and bought 4 pipe interrupters with next day delivery, which have been installed in our on-site laboratory. My user experience was great and I liked the fact that site has all the necessary specifications and prices easily to hand.
Peter Bauckham - Managing Director, Argos Inspection