SharkBite 50' Red PEX Coil Pipe. It is made for hot water use with 1/2" Quick Connect & Brass Pex Insert Fittings. This W Type B Burst Pex Pipe is rated 1,100 psi at 73 Degrees Fahrenheit and 375 psi at 180 Degrees Fahrenheit. It has more anti-oxidants and thermal stabilizers than Type A, making it suitable for chlorine ratings and recirculation systems. Do not use duct tape, pipe dope, threading compound, or mineral/linseed oil. Support pipe every 30" vertically and horizontally, protect when entering/exiting slabs or walls, and avoid kinking or exposing to sunlight. Minimum clearance to water heaters, boilers, wood burning appliances is 18", recessed lights 12", and gas appliance vents 6". NSF-61 FDA, CSA/ASTM, UPC Listed/Approved. 25 Year Warranty Even When Used With Other Manufacturers ASTM SDR-9 Certified Fittings. Covers Materials, Labor & Is Not Pro-Rated.