1 BSP Double Check Valve - Female Thread to Female Thread Parallel threaded ends to ISO 228
This product is a 1 inch double check backflow preventer with a female thread at each end. It is manufactured from dezincification-resistant brass which has a higher corrosion resistance, particularly to certain types of water like sea water, so giving a longer life and more robust solution.
IMPORTANT NOTE, MOST PLUMBING PRODUCTS ARE STATED AS BSP IMPERIAL THREAD MEASUREMENT WHICH MEANS THAT ACTUAL DIAMETER OF THE THREAD SIZE IS APPROXIMATELY 1/4 INCH LARGER THAN THAT STATED IN BSP TERMS. FOR EXAMPLE THIS 1 INCH BSP THREAD ACTUALLY MEASURES APPROXIMATELY 1 1/4 INCH IN DIAMETER