Industrial Valves, Actuators & Flow Control worked example

Seat Leakage Test Time at 14% setup, documentation, and retest allowance: a worked example

This worked example runs the seat leakage test time numbers for a tougher week than the baseline: 14% setup, documentation, and retest allowance instead of the typical 20%. Estimate total labor hours to complete seat leakage testing on a batch of valves, accounting for the number of valves to test, average test duration per valve, and setup, hold, and documentation overhead.

The inputs for this scenario

  • Valves queued for seat leakage test: 40 valves (held at the documented default)
  • Average test cycle time per valve: 15 min / valve (held at the documented default)
  • Setup, documentation, and retest allowance: 14 % (the input this scenario stresses; the baseline uses 20)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base test hours = valves queued x test cycle time per valve (converted to hours).
  • Total seat leakage test time (hours) works out to 3.04 hr at these inputs, and this is the headline figure for the scenario.
  • Base test time (hours, no overhead) works out to 2.67 hr at these inputs.
  • Setup and retest overhead added works out to 14 % at these inputs.
  • Valves tested per hour works out to 15 pieces / min at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where setup, documentation, and retest allowance sits at 20% and the headline result is 3.2 hr, this scenario comes in 5% below the baseline at 3.04 hr.
  • Use it when scheduling the leak-test station for a production batch, quoting a test-only subcontract job, or sizing how much QC capacity a release of valves will consume. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Total seat leakage test time (hours): 3.04 hr (headline result)
  • Base test time (hours, no overhead): 2.67 hr
  • Setup and retest overhead added: 14 %
  • Valves tested per hour: 15 pieces / min

Run it with your numbers

  • To rerun this with your own numbers, open the live Seat Leakage Test Time calculator, set setup, documentation, and retest allowance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.