Frequently Asked Questions
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The John Guest Speedfit 12mm Shut Off Isolation Valve provides a quick and reliable way to isolate the water supply to individual appliances or sections of pipework. Designed for 12mm John Guest Speedfit and Whale semi-rigid pipe, it is ideal for caravans, motorhomes, campervans, boats and other fresh water systems.
Installation is quick and straightforward. Simply push the 12mm semi-rigid pipe fully into each end of the valve. The integrated quarter-turn handle allows the water supply to be turned on or off instantly, making servicing and maintenance much easier without draining the entire system.
Manufactured from durable polypropylene with EPDM seals, this genuine John Guest valve creates a secure, leak-resistant push-fit connection without the need for tools, solvent or sealants. It is fully demountable, allowing pipework to be disconnected quickly if required.
This valve allows you to quickly isolate the water supply to a tap, toilet, appliance or section of 12mm pipework, making servicing and maintenance much easier.
Yes. It is designed for 12mm John Guest Speedfit pipe and is also compatible with 12mm Whale semi-rigid pipe.
The blue quarter-turn handle controls the flow of water. Turn the handle one way to allow water through and a quarter turn the other way to shut the supply off.
No. Simply push the pipe fully into each end of the valve. The push-fit connections create a secure, leak-resistant seal without the need for tools, solvent or sealants.
Can't find the answer you're looking for?
Give our technical team a call on 01271 611015 (Option 2) and we'll be happy to help.
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