Glow-Worm 20014169 Bypass | Genuine Replacement Spare Part

Glow-Worm 20014169 Bypass | Genuine Replacement Spare Part

Genuine Glow-Worm 20014169 automatic hydraulic bypass valve for compatible Glow-Worm boilers. Maintains a minimum flow rate around the boiler when zone valves close, preventing pump overload and overheating. Gas Safe registered engineer required.The price shown includes FREE DELIVERY.
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