The 12mm John Guest PP shut off valve PPMSV041212W is a compact push-fit isolation valve for 12mm OD plastic or soft metal tubing. It features Speedfit‑to‑Speedfit push-fit connections on both ends, allowing fast, tool‑free installation into caravan, motorhome, campervan and water filter pipework. A quarter‑turn blue lever handle provides positive on/off control to isolate appliances, taps, filters or individual circuit branches for service and maintenance. The durable white polypropylene body with EPDM O‑ring offers excellent chemical resistance and is suitable for potable water, intermittent hot water and water treatment applications up to 10 bar at 20°C. Fully demountable push‑fit ends make it simple to reconfigure pipe runs or replace components without cutting the tube, helping to minimise downtime.

• 12mm John Guest PP shut off valve PPMSV041212W – Speedfit to Speedfit push-fit valve.

• Quarter‑turn blue lever handle quickly isolates 12mm water lines and appliances.

• Polypropylene body with EPDM O‑ring for potable water, intermittent hot water and treatment systems.

• Push‑fit design connects and disconnects 12mm tubing in seconds with no tools.

• Ideal for caravan, motorhome, campervan, boat and domestic water filter installations, single valve supplied.

Our Delivery Options

Express 2/4 Day Delivery

• Delivery Fee:
• Order By: 
• Delivery Time: Before 6pm Monday-Friday

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Next Business Day Delivery

• Delivery Fee:
• Order By: 
• Delivery Time: Before 6pm Monday-Friday

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Pre-12 Next Business Day Delivery

• Delivery Fee: £12.99 delivery for all pre-12 orders
• Order By: 
• Delivery Time: Before 12pm Monday-Friday

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Remote Areas Delivery

• Delivery Fee:
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• Delivery Time: Standard delivery (2-4 days)

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Weekend Delivery

• Delivery Fee:
• Order By:
• Delivery Time: Before 6pm Saturday

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Good To Know

For orders to some addresses, especially in the Highlands of Scotland and Offshore, next day delivery options are not available and delivery can take several days. Saturday delivery is not available for remote areas.

Items over 30kg: Items over 30kg can only be delivered from Monday to Friday. If ordered before 3pm, please allow up to two business days for delivery. Orders placed after 6pm Thursday will be delivered after the weekend.