Hose, Tubing & Fluid Conveyance Products calculator
Leak Test Throughput Calculator
Leak Test Throughput converts a shift's worth of pressure- or vacuum-tested hose assemblies into a defensible parts-per-hour rate for the test station. It distinguishes the raw rate (parts divided by clock hours) from the effective rate once you discount fixture loads, pressure dwell, and operator handling that eat into nominal capacity. Quality and production engineers use it to find whether final leak test is the bottleneck behind the crimp cell and to set realistic test-cell staffing. On most fluid-conveyance lines the leak tester is the gate every assembly must clear, so its true hourly rate sets the shippable ceiling for the whole line.
What this calculator does
- Estimate leak test throughput for hose or tubing assemblies from test output, runtime, and test station efficiency.
- Use it when sizing leak test capacity for a production run, reviewing whether the test station is a bottleneck, or quoting lead time for a hose assembly order.
- It computes the effective leak-test throughput in assemblies per hour by discounting the raw tested-per-hour rate by station efficiency.
Formula used
- Raw leak test throughput = assemblies tested / test station runtime
- Effective leak test throughput = raw throughput x test station efficiency
Inputs explained
- Assemblies leak-tested and released:
- Leak-test station runtime:
- Leak-test station efficiency:
How to use the result
- Use it to size a leak-test cell against upstream crimp output or to validate a per-hour rate before quoting test capacity.
- It uses one blended efficiency; a mix of short low-pressure tests and long high-pressure proof cycles on the same station will average out and hide the slow product family.
Current U.S. benchmarks
- The U.S. has 11,391 plastics and rubber products establishments employing about 815,988 workers (Census County Business Patterns, 2023).
Common questions
- How do you calculate leak-test throughput? Divide assemblies tested by station runtime for the raw rate, then multiply by efficiency. With 480 assemblies over 8 hours at 85% efficiency, raw is 60/hr and effective is 51 assemblies/hr.
- What is the difference between raw and effective throughput? Raw throughput (60/hr) assumes the station tests continuously. Effective throughput (51/hr) accounts for fixture loading, pressure dwell, and handling, giving the rate you can actually plan around.
- What is a good leak-test efficiency for hose assemblies? Single-station manual leak testers commonly land at 80-88% efficiency; the 85% default is typical. Automated multi-port fixtures with auto-clamp can push past 90%.
- Is leak test usually the bottleneck on a hose line? Often, yes. If the crimp cell feeds 60 assemblies/hr but the tester only clears 51 effective, test is the constraint and work-in-process will pile up ahead of it.
- How do I raise effective leak-test throughput? Reduce pressure dwell where the spec allows, add test ports so multiple assemblies cycle in parallel, or pre-stage fixtures. Lifting efficiency from 85% to 90% on this station adds 3 assemblies/hr.
Last reviewed 2026-05-12.