Texas Propane’s Liquid Withdrawal Valve

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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.

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Texas Propane’s Propane Vapor Return Valves

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Also known as the vapor equalizing connection or vapor equalization valve, the vapor return valve is required on all ASME propane tanks. Texas Propan typically uses this valve during hot summer months in Texas. In the event that liquid must be evacuated from the container, the vapor return valve will be used.

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Fixed Liquid Level Gauge – Propane Bleeder Valve

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The fixed liquid level gauge, also known as the bleeder valve is the one and only gauging device that accurately depicts the level of propane in the tank when it is being filled. The face gauge is not to be used during the refueling process. This article will explain why the bleeder valve is open during the refueling process. Many individuals believe that using the fixed liquid level gauge during gas delivery results in a significant amount of propane lost. Even if two cubic feet of propane gas is lost through the bleeder valve, this is only 0.05 gallons of gas. At $2.00 per gallon, this would be equal to ten cents worth of propane expelled through the bleeder valve.

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Propane Tank Service Valve

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The propane tank service valve is the point at which propane vapor enters the gas plumbing system for use by downstream LP Gas appliances. All ASME propane tanks consist of a service valve that functions as a primary shut-off device when used in vapor service systems. Propane operation of the service valve is crucial for safety reasons and gas utilization. If you smell propane in your house, make sure to turn the service valve off immediately!

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Propane Tank Float Gauge

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The propane float gauge is for consumer use only. The float gauge is not to be used for filling as it only provides an approximate tank percentage and cannot be considered 100% reliable. The fixed fixed liquid level gauge is utilized for filling. Tanks with float gauges measure the volume of the tank as a percentage of the total capacity of the container. If the gauge reads 50% on a 250 gallon propane tank, the tank has approximately, 125 gallons of propane. While many believe this is a pressure gauge or a gallons gauge (some older tanks do have gallons gauges), it is really a gauge that indicates the volume in the tank as a percentage of the tank’s total capacity.

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Propane Liquid and Propane Vapor

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Before used, propane exists in one of two forms, liquid or vapor. Both forms of propane are usable but cannot be used interchangeably. Simply put, a propane system designed to use vapor can’t utilize propane in its liquid form and vice-versa. In addition, the characteristics of propane liquid and propane vapor are so different that the primary properties we are concerned with are as different as night and day. With propane liquid, temperature is the primary factor whereas weight is the main concern regarding propane vapor. Consider it this way, water is liquid and steam is water vapor. The same holds true for propane and is explained in detail in this article.

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Converting Gas Appliances

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Gas appliance conversions to either natural gas or propane involves the changing of internal parts to properly compensate for the differing pressures between the two. Appliances fueled either by natural gas or propane can be converted to run on the other provided an approved conversion kit is available.

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Can I Paint My Propane Tank?

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The answer to this question is yes. However, can you paint it any color you want? No, you cannot. NFPA 58 states that propane containers must be painted a heat reflective color. The majority of state regulatory agencies have their own rule addressing this specific issue but the national code declares that LP Gas containers must be painted a heat reflective color unless installed in an extremely cold environment.

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Propane Tank Safety Relief Valves

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One of the most important and vital valves on any LP Gas container is the safety relief valve. It is required by law that all propane tanks and cylinders are to be fitted with pressure relief devices designed to relieve excess pressure. The function of a safety relief valve is to prevent a propane tank from rupturing in the unlikely event of excessive pressure buildup. Propane tank relief valves are also known as pop off valves, pressure valves or relief valves.

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Importance of the Propane Fill Valve

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Propane is introduced to any approved container by the fill valve, also known as the filler valve. These fill valves allow the liquid to flow in only one direction which is into the tank. LP Gas fill valves incorporate backflow prevention, so the fill valve is not ideal for withdrawing propane from within the tank.

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