Adaptor Female 1/2 inch BSP-12mm. This adaptor will allow you to connect 12mm semi-rigid push-fit pipe to a Female 1/2 inch BSP screw fitting. These fittings are designed for hot or cold water systems in touring caravans. The pipe is simply pushed into the fitting to form a safe secure connection. The body is produced in acetal copolymer. O Rings are nitrile rubber. The collet is produced in acetal copolymer with stainless steel teeth. Minimum Working Temperature -20c. Maximum Working Temperature +70c.