🛡️ Metering Valves (Spring-Loaded Anti-Siphon Valves 15-50 PSI, Zero Siphoning)

Chemical Anti-Siphon Valve Calculator

Size spring-loaded diaphragm backpressure and anti-siphon valves (Griffco / Plast-O-Matic) installed at chemical injection quills: maintain constant positive discharge pressure (15 to 50 PSI differential) on positive displacement metering pumps, prevent vacuum siphoning when injecting into negative pressure water mains, and chemical piping contracting yields.

1. Project & Operating Inputs

Chemical Feed Lines (Line Count e.g. 8 Chemical Injection Quills)

Water Main Operating Pressure (PSIG e.g. 65.0 PSIG Treated Water Main)

Customer Bid Price for Supplied & Installed Anti-Siphon Quills ($)

Griffco PVDF Anti-Siphon Valves, Hastelloy Spring, Retractable Quill ($)

2. Financial Breakdown & Yield

ANTI-SIPHON CHEMICAL VALVES

Turnkey Chemical Injection Quill Package Profit

Chemical Piping Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Direct Cost