Colder Products® Quick Couplings CPC™ HFC35 Series Polysulfone S traight Hose Barb - Male Connector With Shutoff Nominal Flow: 3/8" Pressure: Vacuum to 125 psi Temperature: -40° to 280°F Size: 3/8" B Not Compatible with the ALC, PLC or LC Series Large diameter high flow, chemi cally resistant.