Detail Size : The size of the 5/8 shut off valve is: 5/8" hose barb x 5/8" hose barb, fit for 5/8" hose ID. Barb OD approx 16mm. The external stainless steel clamps can be equipped with the heater hose shut off valve well when using. Tighten clamps as tightly as possible to prevent leakage. Wide Used : Use widely in the irrigation system, piping system, oil and gas supplying system, other commercial and residential applications. Temperature Range: From -40???????? to 230????????, Working Pressure: Pressure is rated 150 PSI for steam and 600 PSI for water, oil and gas. Premium Brass Material : Our 5/8 heater hose shut off valves are made of high quality heavy duty brass material, heaving corrosion resistance and High/Low temperature resistance features, etc. For long-term use without any damaged. Easy to Install : Our 5/8 heater hose ball valves are designed with quick connections on both ends, for connecting to the hose easily.plug-to-connect design provides an efficient application that saves time and money. 5/8??????? Heater Hose Shut Off Valves : Our 5/8 shut off valves kit includes : 2Pcs 5/8 heater hose shut off valves and 4pcs Stainless Steel clamps. If you have any questions about our 5/8 inch pex ball valves, please let us know first time.