Why Is My Isolation Valve Leaking from the Centre Screw?
Expert advice from Afterglow – leading plumbers in Birmingham
An isolation valve is a small but essential part of your plumbing system, allowing you to shut off water to taps, toilets, boilers or appliances. One of the most common issues homeowners face is an isolation valve leaking from the centre screw. Once it starts dripping, it rarely stops without intervention.
Why Isolation Valves Leak from the Centre Screw
1. Worn Internal Washers or O-Rings
Many isolation valves rely on small rubber seals. These can degrade over time due to heat, limescale, or frequent use. When they fail, water escapes through the spindle and out of the screw.
2. Corrosion Inside the Valve
Hard water and age can corrode the internal components. When this happens, tightening the screw cannot restore the seal, as the internal structure is already compromised.
3. Low-Quality Budget Valves
A large number of older installations use cheap isolation valves that simply do not last. These often fail prematurely, especially on hot water feeds.
4. Damaged Spindle from Over-Tightening
Trying to force a stiff valve can distort the spindle. Once damaged, the valve will continue to leak from the centre.
Why Replacement Is Better Than Repair
Internal Wear Cannot Be Fixed Externally
Once the inside of the valve has deteriorated, no external repair will provide a permanent seal.
Improved Safety and Long-Term Reliability
Replacing the valve eliminates the risk of further leakage, especially important on pressurised or hot water systems.
Quick and Cost-Effective for a Professional
A qualified plumber can replace an isolation valve quickly. It is a small job that prevents bigger issues later.
Need a Plumber in Birmingham?
If your isolation valve is leaking or you need prompt plumbing assistance, Afterglow Plumbing & Heating provide professional, reliable repairs across Birmingham.
Emergency Plumbers Birmingham
https://afterglowheating.co.uk/services/emergency-plumber-birmingham
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For fast, trusted service, contact Afterglow today.
