Setting Up a Pressure-Decay Leak Tester: Parameters & Calibration

The pressure-decay leak tester is the backbone of gas stove quality control. It pressurizes the sealed gas system, watches for pressure drop, and rejects any stove that leaks. But the machine is only as reliable as its settings. Here is how to set the parameters and calibrate it correctly.

Key Parameters to Set

• Test pressure — set to the stove's rated operating pressure, typically the working pressure of the target gas (LPG or natural gas).
• Fill time — the time to pressurize the system before measurement begins.
• Settle time — a brief stabilization period so pressure settles before the test starts.
• Leak threshold — the maximum acceptable pressure drop over the test duration; any drop beyond this fails the stove.
• Test duration — long enough to catch slow leaks, short enough to keep the line moving.

Why Parameters Must Match the Stove

A threshold set too loose lets leaking stoves pass; set too tight, it rejects good ones and slows production. The settings must be tuned to the specific stove model, its gas type, and its operating pressure — not copied from another line.

Calibration Routine

Calibrate the tester regularly using a known reference — a sealed master part that holds pressure and a calibrated leak orifice that produces a known drop. Log every calibration so you can prove the machine was accurate when each batch was tested.

THREEMI Helps You Get It Right

As part of our CKD support, THREEMI advises on leak tester selection, parameter setup, and calibration for your specific stove models. Combined with our CKD kits and assembly guidance, you build a testing process that is both safe and efficient 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