Formula & worked example
Design load=running condensate×safety factor; ΔP=Pin−Pback.
A 500 kg/h running load with a 2× factor requires at least 1,000 kg/h rated capacity at the available differential pressure.
Plant engineering calculator · Updated Sep 17, 2026
Steam Trap Sizing Calculator — Condensate Load, Safety Factor & Differential Pressure
Estimate design trap condensate capacity from running load and startup safety factor, and expose available differential pressure after return backpressure.
Inputs
Live engineering result
Running condensate 500 kg/h
Minimum design capacity 1,000 kg/h
Available differential pressure 7 bar
Capacity margin 100% above running load
Assumptions & limits
- Capacity must be checked on the manufacturer curve at minimum operating differential pressure.
- Do not size a trap from pipe connection size alone.
Frequently asked questions
What does this Steam Trap Sizing Calculator calculate?
Estimate design trap condensate capacity from running load and startup safety factor, and expose available differential pressure after return backpressure.
Can I use the result for equipment selection?
Use the result as an engineering screening and cross-check. Confirm final selections against manufacturer performance data, design conditions, applicable standards and local code.
Why does MAXScanner show assumptions?
Plant calculations can move materially with pressure, temperature, fluid properties, diversity and operating conditions. Visible assumptions make the result auditable.