![]() ![]() WOG (water, oil, gas) is an older term that is no longer used as frequently as it once was. For example, 720 CWP indicates the valve is rated to 720 PSI within the CWP temperature range. This is commonly referenced alongside the valve’s pressure rating. CWP & WOG RatingsĬold working pressure (CWP) indicates the valve’s maximum pressure rating at temperatures between -20☏ to 100☏. A ball valve’s PSI measures the pressure of the media that flows through the valve as it comes in contact with a square inch of pipe or other fittings. Pounds per square inch (PSI) is a measurement of pressure that is commonly used in the U.S. These ratings will be marked on the valve body. Related Reading: What is a Ball Valve? Parts, Actuation, Diagrams & More >īall valve ratings indicate the type of application where it is suitable for use. Model Number: The model or part number of the valve is the manufacturer’s identification process. Manufacturer Information: The manufacturer’s name should be on the valve body. Lead Free: Some valves will be marked with an “LF” to indicate they are lead free. There may be more than one of these, depending on the valve. Some manufacturers may simply list the pressure rating in PSI as well.Ĭasting Number: The casting number is used to track materials and batches. The number after PN indicates the pressure class of the valve in bars, where 1 bar equals 14.5038 PSI. Pressure Class: “PN” refers to pressure nominal. For example, CFM8 is the code for cast 316 stainless steel. Mounting Information: If your valve utilizes an ISO standardized mounting configuration to mount the valve to the actuator, this is where you will find that information.īody Material: This specifically states the type of material used to create the valve body. This stands for “diameter nominal” and the number following the prefix is the valve pipe size in millimeters. Valve Size: The valve pipe size is often simply noted in inches, however, you may also find the pipe size noted with a DN prefix. The following is general information that you may find on the body of a ball valve in the U.S. ![]() ![]() Note that the information shown on the valve body will vary depending on the manufacturer. ![]()
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