John Guest: 28MM X 1" BSPT Ring Main Brass Stem Adaptor Male Brass Stem Adaptor Converts push fit end to male thread. Push-fit System - Compressed Air Range of push-in fittings and pipe provide the ideal connection from compressor to air-line service components through to complete ring main and take off points. A compressed air system can be installed quickly and easily, reducing the need for specialist staff providing reduced production down time. All the connections can be made with a simple push-in action, no need to prepare threaded pipe or solvent. The system will be ready for use immediately and complex systems much more rapidly than traditional methods. Because of the ease of use, this system can be disconnected, altered and extended. Suitable for use with a wide range of plastic and soft metal pipes including UPVC, ABS, Polyethylene, nylon, mild steel and copper. It is recommended that all installations are checked prior to use to determine that a seal has been made. The