XPress 316L Stainless steel fittings are designed for use on potable water (including water purified by reverse osmosis), pharmaceutical, health care, food processing, low temperature hot water and chilled water applications. Press fitting ends have a Leak Before Press (LBP) feature to indicate if joint has not been pressed. WRAS approved. Certified by DVGW and Lloyds Register. Manufactured by a BS EN ISO 9001:2000 registered company. For identification fittings have EPDM black O-rings. Working pressure range: 16 bar at -20°C to 110°C.