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Source exact-match replacement boiler gauges to restore accurate pressure and temperature readings on site. Our comprehensive stock covers genuine OEM parts for all major manufacturers, guaranteeing a reliable and fully compliant repair for domestic and commercial appliances.
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Accurate pressure and temperature readings are absolutely critical for commissioning central heating systems and safely diagnosing faults. Our extensive range of genuine boiler gauges includes simple analogue pressure dials, integrated temperature displays, and combined gauges designed for complex commercial applications. A faulty pressure gauge can lead to incorrect system filling, resulting in nuisance boiler lockouts or constant discharging from the pressure relief valve. Because gauge capillary tubes are highly delicate and prone to snapping during routine boiler maintenance, we stock exact OEM replacements featuring the correct push-fit, clip, or threaded connections for a rapid component swap. Sourcing your diagnostic spares is highly efficient. You can pick up your replacement gauges using our free Click & Collect service in as little as 5 minutes from over 350 branches nationwide, or secure free next working day delivery directly to the property on all orders over £75 ex VAT.
Frequently Asked Questions
Why is a boiler pressure gauge reading zero when the system has water?
If the boiler is firing and functioning correctly but the analogue pressure dial reads zero, the internal capillary tube connecting the gauge to the hydraulic block is likely blocked with system sludge or scale. You must isolate the boiler, drain the primary circuit, and carefully remove the gauge to attempt to clear the blockage with a fine pin. If the delicate copper capillary is kinked or heavily blocked, you must replace the complete gauge assembly.
Can you repair a snapped capillary tube on a boiler gauge?
You cannot repair a snapped or punctured capillary tube on a mechanical boiler gauge. The tube is completely sealed during the manufacturing process and filled with a specific fluid or gas that expands to physically move the needle on the dial. Once the tube is breached, this internal pressure is lost permanently, and you must install a brand new manufacturer-approved replacement gauge to restore functionality.