John Guest push-to-connect technology provides a simple, reliable, leak-free connection Manufactured from white polypropylene and equipped with EPDM O-rings Can be used with plastic or soft copper tubing Lead-free, corrosion free, non-toxic and more chemically resistant than other plastics Manufactured with FDA compliant materials and NSF 61 and 51 certified Rated to 150 psi at 70°F and 60 psi at 140°F Possible applications include: reverse osmosis systems, ice makers, home/office coffee and beverage dispensing equipment, hydroponics and aquarium/aquatics