Gas Leak Test Parameters: Pressure, Hold Time & Pass Criteria

The gas leak test is the single most important quality gate on any gas stove assembly line. But a tester is only as good as the parameters you set — wrong pressure or too short a hold time can let a leaking stove pass. Here is how to define leak test parameters that actually protect your customers.

Set the Right Test Pressure

Test pressure should be set slightly above the stove's normal operating pressure, but within the safe limit of every component. This stresses the gas system enough to reveal leaks without damaging seals or valves. Confirm the correct pressure with your gas system supplier and lock it into the test procedure.

Define a Proper Hold Time

A leak test is not instantaneous. After pressurizing, the system needs a defined hold time — the period the pressure is maintained while you watch for a drop. A hold time that is too short misses slow leaks. A reasonable hold catches both sudden and gradual leaks without slowing the line.

Set Clear Pass/Fail Criteria

Your criteria must be objective. A stove passes only if the pressure drop stays below a set threshold over the full hold time, with no audible or visible leak at any joint. Document the threshold so every operator applies the same standard.

Test Every Stove, Every Time

100% testing is the rule — no sampling. Every assembled stove is pressurized and held before it leaves the line. A skipped test is a liability waiting to happen.

Document and Calibrate

Record each test result for traceability, and calibrate your tester on a regular schedule. A miscalibrated tester can pass stoves that leak or reject stoves that are fine.

Build a Safe Line with THREEMI

THREEMI supplies complete CKD kits and advises on the test equipment, parameters, and procedures your assembly line needs. We help you set up a gas leak testing process that meets safety standards from day one.

About THREEMI

THREEMI is the export brand of Shenzhen Sanmi Manufacturing Co., Ltd., a professional gas stove and kitchen appliance factory in Guangdong, China. With 400+ employees, a 20,000㎡ production facility, and an annual output of 3 million units, we serve wholesalers, distributors, brand owners, and e-commerce sellers in over 30 countries. Our factory is certified ISO9001, CCC, CE, UL, GS, ETL, NF, and SASO.

Start Your Local Assembly Line with THREEMI

We supply complete gas stove CKD (Complete Knock Down) kits, plus assembly guidance, worker training support, and equipment purchasing advice — so you can build a reliable local manufacturing operation. Contact us to plan your CKD program.

WhatsApp: +86 186 7003 0673
Email: logan@threemi.com
Website: www.threemi.com