Check the listing for details. Watts John Guest 5/16 in O.D. Polypropylene Push-to-Connect Coupling Fitting. Condition: New. Listed at 9.95 USD. 5/16 in. O.D. x 5/16 in. O.D. NPTF Polypropylene Push-to-Connect Coupling Fitting Watts PL-3015 The John Guest 5/16 in. O.D. Push-to-Connect Union is manufactured from white polypropylene and equipped with EPDM O-rings utilizing John Guest's push-fit technology to make an easy, reliable, leak-free connection. Developed to satisfy a wide range of applications it can be used on plastic or soft copper tubing. To make a connection, the tube is inserted by hand and the unique John Guest collet locking system holds the tubing firmly in place. Disconnection is just as easy and requires no special tools.John Guest push-to-connect technology provides a simple, reliable, leak-free connectionManufactured from white polypropylene and equipped with EPDM O-ringsCan be used with plastic or soft copper tubingLead-free, corrosion free, non-toxic and more chemically resistant than other plasticsManufactured with FDA compliant materials and NSF 61 and 51 certifiedRated to 150 psi at 70°F and 60 psi at 140°FPossible applications include: reverse osmosis systems, ice makers, home/office coffee and beverage dispensing equipment, hydroponics and aquarium/aquaticsDimensionsDouble Fitting Size5/16" x 5/16"Fitting 1 size5/16"Fitting 2 size5/16"Fitting Size Dimensions5/16" x 5/16"Product Length (in.)1.32 inDetailsApplicationAirColor FamilyWhiteColor/FinishWhiteCompatible Pipe MaterialMulti-PurposeConnection 1PTCConnection 2PTCConnectivityPush FitFeaturesCorrosion Resistant,Lead Free,RemovableFitting or Connector TypeUnionFitting/ Connector CollectionPOM (Polyethylene)MaterialPolypropyleneMaximum working pressure (psi)150Maximum Working Temperature (F)140Pack Size1Pipe or Fitting Product TypeFittings & ConnectorsProduct Weight (lb.)0.0119 lb