This series of couplers are Push Pull Quick Disconnect couplers. They are interchangeable with all 1/2 body ISO 5675 series / Pioneer style couplers including ball seat valve, poppet seal, and 1/2 Body ISO 7241-A couplers. Body Size: 1/2. Body Thread Size: 1/2 NPT Female Thread. Features: Breakaway Coupler with Push Pull Design. Internal Pressure Relief Valve Allows Connect Under Pressure. 1/2 Female NPT Thread. Interchangeable with all ISO 5675 1/2 Body Couplers. Faster Equivalent: 3CFPV 12 NPT F