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  1. A

    35mm check valves

    Hi guys do any of you use 35mm check valves and where do you find best suppliers and prices ?
  2. A

    2 gloworm boilers in parallel both producing fault codes f25

    Hi have installed 2 gloworm ultracom 30hxis piped in parallel unvented system in 38mm pipe reducing to 22mm under floorboards, have fitted a grundfoss alpha 2 pump,The boilers are wired through a warmworld boiler sequencer.This serves a large detached house with 3 floors and...
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