Gas Stove Nozzle Sizing: Match Aperture to Gas Pressure & Regulator

Most buyers understand that nozzle aperture changes with gas type, but fewer account for a quieter variable that matters just as much: supply pressure and the regulator. Get this wrong and even a correctly "sized" nozzle will under- or over-fire. Here is how pressure, regulator, and aperture work together.

Pressure Is the Other Half of the Equation

A nozzle is a calibrated orifice. It meters gas by relying on a known pressure drop across the opening. Change the upstream pressure and the same aperture delivers a different flow rate. That is why LPG — supplied at roughly 28–30 mbar in many markets — uses a smaller aperture than natural gas, which arrives at about 20 mbar.

The Regulator Sets the Stage

The regulator fixed at the cylinder or the mains reduces supply pressure to the level the appliance is designed for. If a distributor supplies a nozzle sized for 28 mbar but the end customer runs a 50 mbar regulator, the burner over-fires — tall yellow flames, sooting, and wasted gas. If the pressure is too low, the flame starves and cooks poorly.

How to Size Correctly

• Know the design pressure — match the aperture to the market's standard regulator output.
• Know the gas type — LPG needs smaller apertures, natural gas larger.
• Match the burner load — larger burners need larger apertures at the same pressure.
• Verify with a flame test — a correct burner lights clean and burns with a short, blue, stable flame.

Stock the Full Range to Cover Every Market

Because pressure standards differ by country, a well-stocked distributor carries the full aperture span. THREEMI supplies nozzles in 16 sizes from 0.45mm to 1.35mm, all on a unified M6x0.75 thread, factory-direct by the carton. With the full range on hand you can serve LPG and natural gas markets — and every pressure standard in between.

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.

Welcome Wholesale Gas Stove Parts Orders

We supply the complete gas stove parts range — SABAF-compatible burner caps, nozzles (0.45mm–1.35mm), flame spreaders, burner sets, ignition parts, thermocouples, and valve bodies — factory-direct at wholesale prices with flexible carton MOQ.

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