Plumbing Installations & Replacements

Stopcock Installation

A properly fitted internal stopcock lets you shut off the water supply to your property quickly and safely. This service covers the installation or replacement of an internal stopcock, with careful pipework connections, leak testing, and a clear handover so you know exactly how and when to use it.

More information

What stopcock installation covers

Whether you need a new valve fitted or an old one replaced, the aim is simple: reliable control of your incoming water supply. The service typically includes:

  • Checking the existing pipework layout and the best location for access.
  • Isolating the incoming supply and draining down as required.
  • Removing a seized, leaking, or poorly positioned stopcock where possible.
  • Fitting and securing a new internal stopcock (and updating fittings if needed).
  • Reconnecting pipework with correct alignment and support.
  • Leak testing under pressure and confirming smooth shut-off operation.
  • Basic guidance on how to operate the valve and what to do if you spot a drip.

When this service is the right fit

Stopcock installation is worth booking if:

  • Your current stopcock is stuck, stiff, or will not fully shut off.
  • There is no internal stopcock, or it is in an awkward or inaccessible spot.
  • You are renovating a kitchen, bathroom, or utility area and want better access.
  • You are a landlord and want a dependable isolation point for maintenance.
  • You have had a leak before and want to reduce damage risk next time.

How the work is carried out

This is usually a planned, non-emergency job. The water will need to be turned off during the work, and some pipework may need minor adjustments to allow a secure, square fit.

Once fitted, the valve is tested for leaks and verified for proper shut-off. You will also be shown how to operate it safely and how to check it from time to time.

After installation: getting long-term reliability

A stopcock should not be left untouched for years. It helps to operate it occasionally to reduce the chance of it seizing, and to keep the area around it clear for quick access.

If you notice weeping, stiffness, or changes in water pressure, it is best to address it early before it becomes an urgent problem.

Frequently Asked Questions

Do I need a stopcock inside the property?
An internal stopcock gives you fast control of the water supply if there is a leak or you need maintenance. Even if you have an external stoptap, an accessible internal valve is often more practical.
Can you replace a stopcock that is seized or leaking?
Yes, in most cases a seized or leaking stopcock can be replaced. If pipework is corroded or cramped, minor alterations may be needed to fit a new valve securely.
Will my water need to be turned off during installation?
Yes, the incoming supply will be isolated while the valve is fitted and tested. The shutdown is usually limited to the time needed to complete the change and confirm there are no leaks.
Where should the internal stopcock be located?
It should be on the incoming cold water main, positioned where you can reach it quickly and safely. If the current location is hard to access, options can be discussed to improve access during installation.
How do I look after a new stopcock?
Operate it gently a couple of times a year to help prevent it sticking. Keep the area clear and check occasionally for drips, especially after it has been used.

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