John Guest 12 mm Push-Fit × 3/8″ BSP Female Connector – Compact Caravan Plumbing Adapter

This John Guest 12 mm push-fit to 3/8″ BSP female connector (Model: CM451213FS) enables fast, watertight connections between metric piping and threaded BSP fittings—ideal for caravan, marine, and motorhome applications. Featuring durable acetal construction and a secure EPDM O‑ring seal, it ensures reliable plumbing with tool-free installation.

Key Features & Specifications:

• Tube Interface: Push-fit 12 mm OD connection—installs in seconds without tools or sealant.

• Thread Connection: 3/8″ BSP female thread for easy connection to threaded fixtures or valves.

• Construction: High-strength acetal plastic housing with quality sealing (EPDM O-ring); compact and lightweight (~10 g).

• Usage: Commonly used in caravan plumbing to link standard caravan fixtures like taps or valves with JG Speedfit lines.

• Warranty & Origin: Manufactured in the UK and comes with a 1-year supplier warranty.