Watts 009-020 20mm ¾" RPZ Reduced Pressure Zone Backflow Preventer Device/Kits Black EPDM Refer to the sizing chart

Refer to the sizing chart photo

Hose Spec: 25mm OD x 450mm Length

249mm internal/external thread diameter (Refer to the BSP sizing chart in the photo gallery)

This AVG NRI-PRV-15C combo valve is commonly supplied as part of AVG Quickie kits and many solar hot water installation kits

Watts 009-020 20mm ¾" RPZ Reduced Pressure Zone Backflow Preventer Device/Kits Black EPDM Refer to the sizing chartOverview The listing is for Watts 009 020 20mm 3 4" RPZ Reduced Pressure Zone backflow preventer range in 3 configuration variants Device Only (009 020) Kits with Strainer & 2 Lockable Ball Valves (009 020 LBS) Kits with 2 Unions, Strainer & 2 Lockable Ball Valves (009 020 ULBS) The Watts RPZ reduced pressure zone backflow preventer takes the backflow prevention protection one step further than a conventional DCV double check valve. Compared to a