The 12mm John Guest Shut Off Valve is a compact, inline valve designed to control flow in low-pressure water and air systems. Featuring the trusted John Guest push-fit connection on both ends, this valve enables quick installation and reliable shut-off without tools.
Ideal for marine, caravan, and commercial plumbing systems, this valve allows for easy isolation of individual lines during maintenance or system changes. It’s constructed from high-grade acetal plastic for long-term durability and performance in potable water systems.
Inline isolation for caravan plumbing
Marine and RV water systems
Beverage and vending lines
Low-pressure industrial setups
Water filtration units
12mm push-fit ends for fast installation
Manual lever handle for secure on/off control
Suitable for potable water applications
Made from durable acetal copolymer
Designed for low-pressure systems
Known for precision and reliability, John Guest fittings are preferred by professionals in marine, plumbing, and commercial environments. This shut off valve combines user-friendly operation with a robust seal, offering dependable isolation when it matters most.