General description Conical Union 1-1/2 inch BSP Female - Female A4 (T316) marine grade stainless steel fitting designed for parallel threads (BSPP / G Thread) according to British Standard specifications. Technical specifications Material: A4 (T316) marine grade stainless steel Thread type: Conical male thread, cylindric female thread Thread standard: EN 10226-1 (EX ISO 7-1) Taper: 1:16 on diameter Angle of threads: 55° Maximum operating pressure: 150 lbs (10.34 Bar PN 10)