How to Find your Stopcock 

When a pipe bursts in your home or property, your immediate action should be to locate and shut off the main water supply using the stopcock. However, if you're unsure about the stopcock's location, you may face a challenging situation. This article aims to provide essential information about your stopcock, including where to find it and how to quickly turn it off in case of a leak or burst pipe emergency. 

What is a stopcock? 

It's surprising to hear that a significant number of UK households are not aware of the main stopcock valve in their homes, given its importance in controlling the water supply. The main stopcock, also known as a stop tap, is indeed a crucial component of the plumbing system in a household. As you mentioned, it serves several vital purposes: 
Emergency Shut-Off: The main purpose of the stopcock is to allow you to shut off the water supply to your entire home in case of emergencies, such as burst pipes or major leaks. This quick action can prevent significant water damage to your property. 
Plumbing Work: When you need to carry out plumbing repairs or installations in your home, you must shut off the stopcock to ensure no water flows into the pipes. This makes it easier and safer to work on your plumbing system. 
Appliance Operation: The stopcock's position, whether open or closed, directly affects the functionality of various household appliances. These include your hot water cylinder, cold water tank, boiler, kitchen and bathroom taps, showers, washing machines, and dishwashers. When the stopcock is closed, these appliances won't receive water, disrupting your daily routines. 
It's essential for homeowners to know the location of their stopcock and how to operate it. Typically, the stopcock can be found close to where the water supply enters your home, often near the kitchen sink, under the stairs, or in a utility room. It's a good practice to periodically check that your stopcock is functioning correctly and that you can easily access it in case of an emergency. Educating oneself about basic home maintenance, including the location and operation of the stopcock, can save both time and money by preventing or mitigating water-related emergencies. 

Why is it important to know where your stopcock is? 

It’s crucial to know where your stopcock is because it’s the control tap or isolation valve for your mains water supply. It’s also often called a ‘stop tap’. This means it’s the first place you should go in the unlucky event of a pipe bursting or a leaking tap. Shutting it off can prevent a minor problem from becoming a major one that might create a flood, causing hundreds or even thousands of pounds worth of damage to your home. 

Did you know that most homes have an external and internal stopcock? 

Your external stopcock is the tap located outside your home that controls the water supply serving your street, regulating water flow into your home. Conversely, your internal stopcock is responsible for controlling the flow of water within your home. It's important to note that not all homes have external stopcocks; some may only have internal ones. Regardless of your setup, in the event of a flood or water-related emergency in your home, your top priority should always be to locate and shut off your internal stopcock. 
It's a prudent idea to determine whether your home has an external stopcock. If your leak or flood originates from your external supply pipe leaking or rupturing, after closing the internal stopcock, you can also turn off the external stopcock to prevent further water from entering your home. This double shut-off procedure can effectively stop the flooding and allow for necessary repairs to be carried out. 

Where is my stopcock? 

Your property normally has two stopcocks. You’ll find the internal stopcock inside your home, as close as practicable to the point where the cold water supply enters your property, usually under the kitchen sink or in a downstairs WC or bathroom. Your external stopcock is outside, on the boundary of your property, and it’s the responsibility of your water supplier to fix it if there’s a leak. 

Do you have a leaking stopcock? 

If you come across a leaking stopcock tap, it's crucial to address the issue promptly to prevent it from worsening. A stopcock typically consists of three primary components: 
Compression Nuts: Two compression nuts connect the tap to the water pipes on both sides. These nuts help secure the tap in place and create a watertight seal with the pipes. 
Gland Nut: Located directly below the tap, the gland nut serves as a barrier to prevent water from flowing up inside the spindle. It plays a vital role in maintaining the seal and preventing leaks. 
Head Gear Assembly: This component is the central body of the tap, situated between the compression nuts. Inside the stopcock, the head gear assembly contains the mechanism responsible for controlling the flow of water. It enables you to turn the tap on and off to regulate the water supply. If you notice a leak at any of these components, it's important to address it promptly. Depending on the severity of the leak, you may need to tighten the compression nuts, replace a faulty gland nut, or repair/replace the entire stopcock if the head gear assembly is damaged. Proper maintenance and timely repairs can help prevent water wastage and further damage to your plumbing system. 
Share this post:
Our site uses cookies. For more information, see our cookie policy. Accept cookies and close
Reject cookies Manage settings