Non-return Valve

Non-return valve manufactured from brass. BSP thread on all screw threads.

Made in Italy 

1 inch BSP Male & Female thread

The British Standard Pipe (BSP) is a family of standard screw thread types that has been adopted internationally for interconnecting and sealing pipe ends by mating an external (male) with an internal (female) thread and has been adopted as a standard scale used in plumbing fittings.