Niron can be joined using a compression method, by the hand tightening of compression nuts of fittings and couplings. A full range of fittings are available in sizes of ½” through 4”. The system is rated to 150 psi at ambient temperatures, and is rated to 90 psi for temperatures of up to 160oF in sizes through 2 inch and to 90 psi for temperature of up to 140oF in sizes of 2½” through 4 inch. Niron compression fittings and couplings may be disassembled and re-used, which adds versatility. Transition couplings are also available for connection to copper and copper-tube size systems.