John Guest 12 mm Shut‑Off Valve – Push‑Fit Plastic Inline Stop Valve (White/Blue)

Conveniently control your water supply with the John Guest 12 mm Push-Fit Shut-Off Valve. Engineered for easy tool-free installation and reliable isolation, this inline front valve fully shuts off flow using a ¼-turn handle. Made in the UK from durable polypropylene, it’s suited to potable water systems in caravans, RVs, boats, and low-pressure plumbing applications.

Key Features & Specifications:

• Push‑Fit, Tool-Free Installation

  Simply push onto 12 mm John Guest or similar pipe. No tools or sealants required.

• Reliable ¼-Turn Isolation

  Fast and secure on/off control with a quarter-turn blue/white lever. Not recommended for partial opening.

• Built for Durability & Safety

  Crafted from polypropylene with EDPM O‑ring for high chemical resistance. Suitable for potable water and intermittent hot water (4 bar at 60 °C), rated up to 10 bar at 20 °C.

• Corrosion-Free and Reusable

  The push-fit system ensures a tight seal without deformation, and the valve is fully demountable for quick maintenance.

• Compact and Lightweight

  Made in the UK with a lightweight build (< 50 g); ideal for tight installations.

• Genuine JG Quality and Warranty

  Manufactured to high standards, includes a 1-year warranty when bought through authorised stockists.