ISO Body Size: 1/2. Port Thread: 1/2 BSP (British Standard Pipe) Thread. This 1/2 coupler connects to its male equivalent . We also carry a complete set , including a single male and single female coupler. Flush face valve design minimizes fluid loss and air inclusion. Locking sleeve to prevent accidental disconnection. Zinc-nickel plating provides superior corrosion resistance. Hardened steel construction with hardened sleeves. Allows for minimal pressure drops. Easy single-handed push-connect design. Nipple seal resists blow-outs. Interchangeable with other ISO 16028 standard couplings. Features 5,076 PSI rating. 23.78 GPM Max Flow Rate. 12 GPM Nominal Flow Rate. Buna-N Seals with Teflon backup ring can operate up to 250° F. Face Diameter: 1.50 (38mm). Length: 3.43 (87mm). Hex: 1.42 (36mm).