SharkBite 22441LFA Water Heater Installation Kit 3/4 Inch x 3/4 Inch FNPT, Push-to-Connect, PEX, Copper, CPVC INSTALLS IN SECONDS: Water heater installation kits require no special tools, no soldering, clamps, unions, or glue. Just push to create a watertight seal COPPER, PEX, CPVC or PE-RT: SharkBite water heater install kits fit OD controlled copper, PEX, CPVC and PE-RT. Use for both hot and cold water supply lines QUALITY: Only SharkBites quality and performance is field-proven with more than 550 million connections. SharkBite is the only push-to-connect brand than can ensure a clean, leak-free connection CERTIFIED: SharkBite fittings are certified to 200 PSI and 200F and can be reused up to four times in potable and hydronic heating water distribution RESIDENTIAL and COMMERCIAL: SharkBite Water heater connector meet the same standards for commercial and residential plumbing applications. Inspector friendly for a peace of mind.