Tesla UK neXgen drain off cocks fix the long-standing issue of perished and stuck washers, which commonly cause leaks and delays when performing maintenance on a central heating system. Instead, neXgen’s revolutionary one-piece hardened plastic insert moves in and out of the body and does not rely on spindles or washers. The result is a reliable valve that will always allow draining.
Important: neXgen inserts can only be used on neXgen Drain-Off Valves. Please remove the insert before any hot works.







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