What is an LPG cylinder valve?

It is the brass fitting screwed into the neck of an LPG cylinder. It seals the gas in, lets the cylinder be filled and emptied safely, and connects the cylinder to the regulator or appliance. Many valves also carry a pressure-relief valve that vents gas if pressure inside the cylinder climbs too high.

Which standards do LPG cylinder valves follow?

In Europe and many export markets, LPG cylinder valves are made to EN 13953, with outlet connection dimensions as per EN 15202. Brass is specified to EN 12164/12165 and rubber seals are tested to EN 549. Valves for transportable pressure equipment in the EU carry the π mark (TPED). North American overfill-protection valves are listed to UL 1769.

EN 15202 sets the dimensions of LPG outlet connections — the G-numbered outlets such as G.52, G.56 or G.61 — so that a valve and regulator from different makers fit together. All Orson outlet connections are made to EN 15202 dimensions.

What is the difference between a compact valve and a hand-wheel valve?

A compact valve is self-closing: it stays shut until a regulator is clicked on, and closes again when it is removed. A hand-wheel valve is opened and closed by turning a wheel, and the regulator screws onto its outlet. Which one you need depends on your market and the regulators used there.

What does a pressure-relief valve (PRV) do?

A PRV is a small spring-loaded valve inside the main valve body. If the pressure in the cylinder rises above its set point — for example when the cylinder is left in the sun — it opens and vents gas, then closes again once pressure falls. Orson sets and discharge-tests every PRV on automatic machines, with the results recorded, to EN 13953.

What is an OPD valve?

OPD stands for overfill prevention device. A float inside the cylinder shuts off filling when the cylinder reaches its safe fill level. OPD valves are required in North America on 4 to 40 lb cylinders, such as BBQ cylinders. Orson's OPD and LCC 27 valves are UL Listed to UL 1769 for the USA and Canada.

Can valves be made to our own inlet and outlet specification?

Yes. Inlet threads and outlet connections are made to your specification, alongside the standard EN 15202 outlets. Tell us your cylinder, market and connection and our engineers will confirm the right configuration.

Which countries does Orson export to?

Orson valves are supplied to more than 60 countries — including the European Union, the United Kingdom, the Nordic countries, the Middle East, Africa, South America, the USA, Canada and Australia. We have exported to the EU for more than 20 years.

How do I request a quotation?

Add the valve families you need to the enquiry basket on the Products page and send it in one email, or write to sales@orsonholdings.com. For LPG valve enquiries you can also call or WhatsApp +91 98748 48435.

Guide

LPG cylinder valves, explained.

Types, safety features, standards and how to choose — written by the engineers who have made 70M+ of them.

What an LPG cylinder valve does

The valve is the single most safety-critical part of a cylinder. It holds the gas in through years of filling, transport and use, lets it out only when a regulator or appliance asks for it, and — where fitted with a pressure-relief valve — vents safely if pressure ever climbs too high.

The main types

Valve types follow how the cylinder is used and which regulators a market uses.

Compact (self-closing) valves — domestic and commercial cylinders with click-on regulators.
Hand-wheel valves — opened and closed by hand, with a screw-on regulator.
Jumbo valves — larger cylinders and higher flow demands, in full hex and monobody designs.
Camping and bayonet valves — small portable cylinders for stoves, lamps and outdoor use.
OPD and Type 27 valves — overfill protection for North American and Australian cylinders.

Safety features to look for

Different markets require different protection. A good valve range offers each as an option on the same proven body.

Pressure-relief valve (PRV) — vents excess pressure, set and tested to EN 13953.
Dual sealing — a second seal for extra leak-tightness over a long service life.
Residual flow device — keeps a small positive pressure so air and moisture can't enter an empty cylinder.
Fusible plug — melts in a fire and vents the cylinder in a controlled way.
Overfill prevention (OPD) — stops filling at the safe level.

The standards that matter

Standards make valves safe and make them fit. When comparing suppliers, ask which of these each valve is made and tested to.

EN 13953 — the European standard for LPG cylinder valves.
EN 15202 — dimensions of LPG outlet connections.
EN 12164/12165 — brass rod and forging stock used for valve bodies.
EN 549 — rubber materials for seals, including n-pentane and ozone resistance.
π mark (TPED) — transportable pressure equipment in the EU.
UL 1769 — cylinder valves for the USA and Canada.

Material and manufacturing

Most cylinder valves are forged brass. What separates a reliable valve from a cheap one is control: checking every batch of supplier brass on a spectrometer before it reaches the shop floor, forging and machining to tight tolerances, assembling on automated lines, and verifying critical outlet threads with imaging and contour checks.

Testing and traceability

Look for leak testing on PLC-controlled systems and, where a PRV is fitted, set and discharge testing on automatic machines — with results recorded so valves can be traced back to their production batch.

How to choose the right valve

Start from the cylinder and the market, not the catalogue.

Cylinder size and use — domestic, commercial, industrial, camping or forklift.
Market and approval — EN and π for Europe, UL for the USA and Canada, AS for Australia.
Outlet connection — the EN 15202 G-number your regulators use.
Inlet thread — to suit your cylinder neck.
Safety features — PRV, dual sealing, residual flow, fusible plug or OPD as your market requires.

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