Effortlessly connect push-fit to threaded systems with the John Guest Stem Adaptor. This fitting allows for a fast, simple installation, creating an instant and airtight seal without the need for tools, hot works, or sealing agents. Reduce installation time by up to 50% compared to traditional methods. The unique collet locking design ensures a secure pipe hold without deforming the pipe or restricting flow. Maintenance is streamlined with fully demountable fittings, allowing for quick modifications and extensions. Crafted from tough engineered plastic with a nitrile O-ring, it offers superior flow characteristics and is suitable for air and pneumatics piping systems up to 10 bar. This food-grade fitting is also compatible with various tubing types, including John Guest nylon, aluminium, LLDPE, copper, and PEXa. Manufactured and assembled in the UK. Key Features: * Instant push-fit connection to 3/8" BSP threaded connection * Airtight seal without tools or sealants * 50% faster installation than traditional methods * Secure collet locking design * Fully demountable for easy maintenance and modification * Durable engineered plastic construction * Suitable for air, pneumatics, and potable liquids Product Summary: John Guest Speedfit stem adaptor, 12mm push-fit to 3/8" BSP thread, black, engineered plastic, nitrile O-ring, suitable for air, pneumatics, and potable liquids, PM051213E.