🚰 ASSE 1013 / AWWA RPZ Valves (2"-4" Flanged), 8-14 PSI Friction Loss & Testing

Commercial RPZ Backflow Preventer Calculator

Size Reduced Pressure Zone (RPZ) backflow preventers under ASSE 1013 & AWWA C511 for commercial irrigation and domestic water supplies: calculate valve flow capacity (GPM), internal spring check pressure loss (8 to 14 PSI head loss), relief valve discharge drain sizing, annual testing certification, and plumbing contractor margins.

1. Project & Operating Inputs

Commercial Irrigation Demand (GPM e.g. 150 GPM Flow)

Valve Size (Inches e.g. 3.0" Flanged RPZ Assembly)

Customer Bid Price for Supplied & Certified RPZ Vault ($)

Lead-Free Bronze/Ductile RPZ, Enclosure, Winterization & Certified Tester ($)

2. Financial Breakdown & Yield

ASSE 1013 RPZ BACKFLOW PREVENTER

Turnkey RPZ Installation Profit

Commercial Plumbing Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost