Texas Propane’s Liquid Withdrawal Valve

propane liquid withdrawal valve

The liquid withdrawal valve is commonly known by its manufacturers given name such as Chek-Lok or Checkmate. However, the proper name is “actuated liquid withdrawal excess flow valve”. It serves as critical role in propane tank liquid evacuation. This valve is also utilized in other applications requiring the use of liquid propane.

Operation of Texas Propane’s Liquid Withdrawal Valve

The liquid withdrawal valve functions only with additional specialized fittings we supply for liquid evacuation. Without these required fittings, the liquid withdrawal valve is unusable. This valve is attached to your tank and itself is in the vapor space. The diptube that reaches the bottom of your tank is in direct communication with the liquid space of your propane tank which allows it to be utilized for liquid propane service or liquid withdrawal. The valve itself contains a powerful spring holding a seat disc in a firmly closed position. Texas Propane opens the seat disc by attaching a second valve to the exterior of the liquid withdrawal valve outside your tank. This secondary valve is available only through licensed propane companies. Once our team has successfully opened the liquid withdrawal valve by attaching the second valve to the exterior portion of the liquid withdrawal connection, propane liquid can be withdrawn. The liquid withdrawal valve has a safety mechanism built in called an excess flow valve. If the flow of liquid reaches a rate in excess of its design, the valve will close, hence the name “excess flow valve”.

Uses of Texas Propane’s Liquid Withdrawal Valve

The liquid withdrawal valve allows tanks to be emptied of liquid propane before they are transported or moved. They are also utilized in consumer applications as a means for refueling portable cylinders. The valve attached to the liquid withdrawal valve is utilized as a service valve in this capacity. The hose and hose-end fittings allow propane liquid to be transferred into smaller tanks and cylinders for use on forklifts, gas grills or other appliances using propane cylinders as an energy source. This actually makes a domestic ASME container into more of a distribution supply source.


These are just the basics of propane liquid withdrawal valves from Texas Propane. Don’t hesitate to contact us here at Texas Propane with the link below for more information!

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