Shurflo Water Pressure Limiting Valve 50psi, USA f-NPT-3/4.
Reduces mains pressure to 50psi.Combined city water entry, pressure regulator and check valve. This gets attached directly to the hose.
It comes with 1/2 Inch BSP male fitting on the outlet side. The inlet is 1/2 Inch BSP female fitting (after using the included USA adapter).