PROBite push connect fittings and valves are brass push on fittings that connect copper, PEX, CPVC and stainless steel plumbing pipe, available in both low-lead and lead-free versions. PROBite is removable and reusable with full, unrestricted flow. 1/4 to 2 in. PROBite fittings are available in bulk and individually barcoded bags with inserts. Starter kits are also available. PROBite fittings meet IAPMO, UPC, IPC, ASSE 1061, NSF 61 and cUPC standards. PEX inserts must be used when connecting PEX pipe. PROBite low-lead is made with ultra safe CW617N forged brass. PROBite lead-free meets Annex-G, California AB-1953 and vermont lead-free requirements.