🛡️ ASME Section VIII (Spring-Loaded Blower Pressure Relief Valves & Vacuum Breakers)

Blower Pressure Relief & Vacuum Breaker Calculator

Size full-flow spring-loaded pressure relief valves (PRV / Kunkle / Protectoseal) and weighted vacuum breaker valves protecting positive displacement blowers from catastrophic overpressurization or vacuum dead-heading: calculate 100% full-capacity relieving flow (SCFM @ 10% overpressure), prevent motor stall and shaft shearing, and valve sales yields.

1. Project & Operating Inputs

Blower Maximum Output (SCFM e.g. 1,450 SCFM Full Blower Flow)

Relief Set Pressure (PSIG e.g. 14.0 PSIG Emergency Relief)

Customer Bid Price for Supplied & Calibrated ASME PRV Package ($)

Kunkle 337 Cast Iron Full-Flow PRV, Flanged Fittings & Calibration ($)

2. Financial Breakdown & Yield

BLOWER PRESSURE RELIEF

Turnkey Blower Safety Valve Assembly Profit

Severe-Service Pressure Safety Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Direct Cost