The Nibco Press System fittings are designed to join with ASTM B 88 seamless copper water tube in residential and commercial potable, hot, chilled and process water applications for plumbing and HVAC systems. Copper and copper alloy materials and EPDM elastomeric seals have a long history of compatibility with common chemicals used in these systems. A chemical resistance chart should always be referenced when other fluids are to be introduced. No Flame Watertight seal Easy to install Consistent & reliable connections Faster installation Installs wet or dry Environmentally clean Safe installation -20°F to 250°F up to 200 PSIG, non-shock working pressure - Manufacturer: Nibco, Inc.