How to tell common types of gas cylinders apart: household cylinders of around 12kg, 45kg industrial cylinders, small specialised cylinders and mini butane canisters; steel or composite, valve types and how to choose for your needs.
At a gas shop, customers come across many cylinder sizes, paint colours and valve types. Understanding the types of gas cylinders helps households choose a cylinder that matches their needs, helps food stalls and restaurants avoid running out of gas at peak times, and helps dealers stock the right product mix. This article classifies cylinders by capacity, shell material and valve type.
The figure marked on a cylinder, such as 12kg or 45kg, is the weight of gas filled, not the weight of the empty cylinder. The following groups are common on the market.
This is the most popular size for home kitchens and small eateries: compact enough to deliver to the door and place in the kitchen (if kept in a cabinet, the cabinet must have ventilation openings near the floor). Some brands use roughly equivalent sizes, with small differences in the weight of gas filled. See 12kg LPG cylinder.
Used by restaurants, canteens and production workshops, or connected into a cylinder manifold. A large cylinder means fewer changes, and the gas vaporises more steadily when burning at high output. Some markets and brands also use other large cylinder sizes. See 45kg LPG cylinder.
Besides the two main sizes, there are small cylinders for specific needs such as portable stoves, mobile food carts or camping; capacity and valve type vary by manufacturer. If you need a particular size, it can be made to order — see LPG cylinders in a range of capacities.
Metal canisters pre-filled with butane for mini gas stoves; the most common size is 220–250g, and there is also a compact 120g size that is easy to carry. See 220–250g mini butane gas canisters. Mini gas canisters are single-use and must never be refilled yourself.
A detailed comparison is in steel vs composite gas cylinders.
The regulator must match the cylinder valve type; never force a mismatched fitting. For details see the difference between POL and QCC valves.
| Need | Type to consider |
|---|---|
| Home kitchen, small eatery | Cylinder of around 12kg |
| Restaurant, canteen, workshop | 45kg cylinder or 45kg cylinder manifold |
| Tabletop hotpot, grilling, camping | Mini gas stove with butane canisters |
| Special requirements, export | Cylinders in a custom capacity |
Besides capacity, choose the valve type that matches the regulator you use, and prefer cylinders of clear origin, within their inspection date and without deep rust or dents. A cylinder’s service life depends on manufacturing quality and inspection results — see how long do LPG cylinders last.
For dealers, the mix of types of gas cylinders should be based on your customer base: residential areas need more household cylinders, while areas with eateries and factories need more industrial cylinders — see 12kg vs 45kg LPG cylinders: which should a dealer stock.
Do not assume they can. The regulator must match the cylinder valve type and suit the stove’s flow rate; industrial stoves use their own regulators as instructed by the stove manufacturer.
No. Mini butane canisters are single-use; refilling them yourself can cause leaks, fire or explosion. Empty canisters should be left to cool and collected separately, and never burnt or punctured.
Each has its own pros and cons: composite is light and rust-free but more expensive; steel is durable, widespread and suited to existing filling systems.
VietnhatGas manufactures 12kg and 45kg steel LPG cylinders and custom capacities to order for dealers, filling plants and businesses. Send a request on our quotation page.
Written by the VietnhatGas technical and sales team — a batch manufacturer of LPG cylinders. This content is for reference; regulations and standards may change, so please check the current texts.
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