POL Fitting, Valves, Cylinders & Regulators
All LPG gas cylinders have some form of gas valve.
LPG users in Australia will see numerous references to POL valves and POL cylinders but what exactly is a POL valve?
POL Fitting, Valves, Regulators, Cylinders: What is POL? Propane-LPG
• POL refers to a type of gas valve and to gas bottles that have a POL valve fitted.
• "POL" is an acronym for the company that first made the valves — Prest-O-Lite.
• POL is the most common type of valve & cylinder, in Australia, for most LPG gas cylinders from 4kg to 210kg, including 45kg LPG cylinders.
• The POL connection is notable for its reverse — left-handed — thread.
• A pressure relief valve is incorporated within the POL valve for safety.
A POL fitting is an LPG gas connection fitting utilising a left-handed or reverse thread.
The female POL fitting is incorporated into a POL valve, which are typically used on LPG (propane) cylinders.
The male POL fitting is used on pigtail connectors, BBQ regulators and other hose style connectors.
POL is the acronym for the company that first made the valves - Prest-O-Lite.
These are used on LPG - Propane cylinders.
At one time POL fittings were used in many countries, uncluding the USA, but have faded in popularity.
Now Australia is the most notable POL valve user.
Gas Line Connection
Gas Connection Seal
Gas Valve Hand Wheel
CAUTION: Never open the valve when unattached
POL valves are equipped with a bleed screw for decant filling, such as when having a BBQ bottle filled at a service station.
CAUTION: Never open the bleed screw on your gas valve
Pressure Relief Valve
Having the pressure relief valve releasing gas is a rare event.
Most people will never experience venting.
BBQ Gas Fittings
BBQ gas fittings involve less components than home installations, with typical BBQ gas fittings being a regulator and hose.
The regulator and hose usually come as an assembly but hoses are also sold alone.
Some outdoor appliances also require Piezo electric ignitors, various fitting adapters, natural gas conversion kits,
BBQ Gas Leak Test
It is important to regularly leak test your BBQ gas bottle, regulator and hose.
Leaks from these items are frequently the cause of BBQ gas fires.
How to Test
Put some soapy water in a spray bottle.
Turn on the gas bottle without turning on the BBQ.
Next, spray the entire valve, regulator and hose assembly with the soapy water.
Bubbles will form if there is a gas leak and you may also smell the gas.
When done, rinse with clean water to remove the soap solution.
For more details, please see: BBQ Gas Leak Test
Hot To Safely Attach or Change Your BBQ Gas Bottle
Connecting & Disconnecting
The male connector of a POL regulator has a reverse or left-handed thread.
So, to detach, you turn it clockwise and then anti-clockwise to re-attach.
Full step-by-step instructions:
Comments, questions or feedback?