Standard copper x female threaded (FNPT) style dielectric unions in sizes up to 1-1/2". Lead-free compliant.
More about pipe fitting types available at PexUniverse
Crimp style PEX fittings are installed using a crimp or clamp connection methods and require a proper type PEX tool and rings. These pipe fittings are compatible with all 3 types of PEX tubing (A, B, C) and are available in lead-free brass for potable water plumbing applications and regular brass for heating only applications.
Standard copper pipe fittings for plumbing and heating applications manufactured from C12200 copper alloy used by leading copper fitting manufacturers such as Mueller, Nibco, Elkhart and others. These fittings are NSF certified for potable water, lead-free compliant and are approved for potable water use.
Lead-free cast brass fittings - tees, unions, drop ear elbows and others. Designed for installation in plumbing and heating applications. Available in sweat and threaded connections in sizes 1/2" through 1-1/2".
These fittings can be used with PEX, copper or CPVC pipes and do not require solvent, soldering torch or a PEX tool. When inserted into the fitting, the pipe is mechanically locked in place, preventing it from being pushed out by the water pressure. EPDM gasket ensures a leak-free connection.
When water flows through two interconnected pipes made from dissimilar metals, such as copper and galvanized steel, these pipes are subject to galvanic corrosion. This process dissolves one metal while causing build-up of sediment on the other. Dielectric union has a gasket which effectively separates the pipes and helps to prevent galvanic corrosion.