John Guest Speedfit stem reducer for converting from 12mm to 10mm semi rigid tube in hot and cold water systems in campervans, motorhomes, caravans, and boats. This item is useful for connecting the 10mm water inlet and outlet tubes on Truma Combi heaters to 12mm JG tube.
The push-fit design enables instant connections with a leak-proof seal and they are easy to disassemble (without tools) by simply pushing the collet in and removing the tube.
Made from non toxic, food grade materials, safe for use with drinking water.
Further information
Optional Collet Clips are available in blue or red to prevent accidental disconnection.
If using on the hot water side, we recommend using a Tube Insert to support the tube.