The John Guest grey push‑fit acetal straight adaptor (MFL thread) allows you to connect metric pipework to an imperial MFL threaded fitting, fixture, or appliance. Designed for quick, hassle‑free installation, John Guest push‑fit technology provides an immediate, secure connection and a leak‑tight seal—without tools, heat, or sealing compounds.

Its distinctive collet‑locking mechanism grips the pipe firmly without causing deformation or restricting flow. The fittings are corrosion‑resistant and fully demountable, helping to enhance system performance and minimise downtime during servicing.

Manufactured from grey push‑fit acetal copolymer, the adaptor is suitable for foodstuffs, potable liquids, and inert gases. In line with the British Beer & Pub Association Code of Practice, it can also be used with N2/CO2 and mixed‑gas dispense systems, as well as air, pneumatic, and vacuum applications. All John Guest fittings are designed and assembled in the UK.