The widget® is a safe and effective way of attaching a drain down hose to the isolation valve on the Vaillant & Glow-worm range of boilers. It can be attached to standard 6.5 mm hose or a manometer hose. The seal is very effective between aluminium and brass, and can be made 100% with the addition of an O Ring for the introduction of chemicals into the system. Fast and effective. You will receive ..ONE WIDGET® per order supplied.
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