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  • Non-controllable reduced pressure zone backflow preventer with built-in funnel.
    Body: brass. Valves: POM (polyacetal) and brass. Diaphragm and gaskets: NBR (nitrile) and EPDM.
    Female fittings with fastening nut. Springs: stainless steel. PFA pressure 10 bar. Temperature: 65°C.
    Options: Special versions in MM and nickel-plated versions in MM and FF available to order.
    Special requirements: Horizontal installation.
    Application: Heating systems with power of less than 70 Kw.
    Approvals: NF, BELGAQUA, KIWA, DVGW.

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    Part number DN mm DN” Connection Box/Carton
    149B3781 15 1/2 Threaded FF 1
    149B3782 20 3/4 Threaded FF 1