May. 26, 2025
A WOG ball valve is a ball valve that is ideal for water, oil, or gas industries and works with a maximum pressure rating of pound-force per square inch (PSI).
Cencho contains other products and information you need, so please check it out.
While WOG pressure rating indicates the maximum pressure in PSI which a ball valve can withstand at a low-temperature range, usually from 20F to 100F (29C – 38C). It is also a measure of the valve’s pressure rating.
So, a wog ball valve also can be called a PSI ball valve, and the WOG pressure rating is only used to describe the threaded ball valves.
Another term used to refer to your ball valve’s pressure rating is CWP, which means Cold Working Pressure at a temperature rating as high as 100F. Actually, CWP pressure rating is considered a more accurate synonym for WOG.
In other words, you can say a WOG ball valve is the same thing as a CWP ball valve. Additionally, you can also refer to a WOG ball valve as a PSI ball valve, with the PSI indicating the pipeline pressure rating.
When buying your ball valve, you can look for these abbreviations engraved with the number. Before you buy the best WOG ball valve, it would be best to understand what features can guarantee safety and durability once the ball valve is in your pipeline. For starters, understanding the relationship between pressure and temperature can be really helpful.
In simple terms, if the media in your pipes gets trapped inside the ball valve with no air, its temperature rises. When the temperature rises, the pressure also rises at a rate of 100 PSI for every 1F. This rate is called thermal expansion and can affect the ball valve sealing and effectivity.
It is important to understand the ball valve features; when rated WOG, it means the ball valve will remain effective as long as the pipeline pressure does not exceed PSI.
The ANSI B16.34 thermal expansion standard helps manufacturers design the best-quality ball valve that will not exceed a safe working pressure and temperature.
You will need proper installation so your PSI ball valve does not malfunction even when the pressure is below the maximum rates.
You can use your WOG ball valve in different pipelines such as sanitary pipelines, corrosive pipelines, and different industrial applications. The ball valve requires leak-proof sealing to minimize emissions, either internal or external.
A Kinvalve WOG ball valve comes with female or male threaded body ends. These end connections are ideal for high pressures of up to PSI since they do not need any moving parts during installation. The stem seal design also guarantees longevity for your pipelines using PTFE or metallic gaskets.
Depending on whether your PSI ball valve is a 1-piece, 2-piece, 3-piece, or 3-way ball valve, Kinvalve can use a one-piece or two matched gaskets (chevron packing) to seal the stem packing for reliable tight.
Kinvalve designs and manufactures the WOG ball valve adhering to international standards, and where you request it, we also customize it for your specific pipelines.
Share your PSI ball valve requirements today so our qualified personnel can advise you!
As wog working pressure is ideal for a busy pipeline, there are some features other than sealing that guarantee safety and good performance. These include anti-blowout-proof stem designs and self-relieving seats.
An anti-blowout stem design will keep the stem intact in the case of thermal expansion and is also ideal for high-pressure pipelines.
Additionally, the PSI ball valve also comes with self-lubricating and self-relieving seats. A self-relieving seat is temporarily forced away from the ball valve by high upstream and downstream pressure.
Kinvalve WOG ball valve is designed for low torque, meaning the friction between these self-relieving seats and the stem will not accelerate the ball or seat deterioration, saving your actuator cost in automatic service, ensuring long cycle life at the same time.
Kinvalve WOG ball valve also comes with an anti-static device to prevents sparks and a fireproof design that ensures your pipelines are safe from fires.
Your PSI ball valve from Kinvalve can also come with an actuator package for the industrial pipelines that you can’t operate manually. It will come with an ISO mounting pad and an actuator of choice between electric, pneumatic, and hydraulic.
Kinvalve WOG ball valve is designed for efficiency in the most demanding pipelines. You can choose from a myriad of ball valve sizes, materials; like stainless steel, carbon steel, and other special alloys.
Kinvalve is internationally acclaimed valve manufacture that currently supplies high-quality valves to more than 60 countries. Every step in the manufacturing process follows a strict procedure to guarantee quality and safety.
Contact us to discuss your requirements of stainless steel precision casting. Our experienced sales team can help you identify the options that best suit your needs.
The process starts from our own casting facility that oversees the body design. We have hundreds of qualified personnel who ensure high-manufacturing standards, so you only get an effective WOG ball valve.
Call us today and share your thoughts or requirements for the best WOG ball valve!
Note that the information shown on the valve body will vary depending on the manufacturer. The following is general information that you may find on the body of a ball valve in the U.S.
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. This stands for “diameter nominal” and the number following the prefix is the valve pipe size in millimeters.
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.
Body Material: This specifically states the type of material used to create the valve body. For example, CFM8 is the code for cast 316 stainless steel.
Pressure Class: “PN” refers to pressure nominal. The number after PN indicates the pressure class of the valve in bars, where 1 bar equals 14. PSI. Some manufacturers may simply list the pressure rating in PSI as well.
Casting Number: The casting number is used to track materials and batches. There may be more than one of these, depending on the valve.
Lead-Free: Some valves will be marked with an “LF” to indicate they are lead-free.
Manufacturer Information: The manufacturer’s name should be on the valve body.
Model Number: The model or part number of the valve is the manufacturer’s identification process.
Related Reading: What is a Ball Valve? Parts, Actuation, Diagrams & More >
Ball valve ratings indicate the type of application where it is suitable for use. These ratings will be marked on the valve body.
Pounds per square inch (PSI) is a measurement of pressure that is commonly used in the U.S. for equipment and instruments. 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.
Cold working pressure (CWP) indicates the valve’s maximum pressure rating at temperatures between -20°F to 100°F. This is commonly referenced alongside the valve’s pressure rating. For example, 720 CWP indicates the valve is rated to 720 PSI within the CWP temperature range.
WOG (water, oil, gas) is an older term that is no longer used as frequently as it once was. It simply means that the valve is intended for use with water, oil, or gas, with the exception of combustible gases.
Working steam pressure (WSP) indicates the maximum steam pressure that a ball valve can withstand at the highest temperature rating. This might also be marked as SWP, meaning steam working pressure.
Only certain ball valves are approved for use with combustible gases, and these will have specific markings that explain where they can be used. Some of these include:
Indoor Gas Ratings:
Outdoor Gas Ratings:
Please note that the above information is intended to be used as a base guideline only. Care must be taken to ensure the valve you choose is a good fit for your specific application requirements. If you are unsure, it is always best to speak directly with the manufacturer or distributor about your application.
Related Reading: 15 Factors to Consider Before Your Next Industrial Ball Valve Order >
If you are interested in sending in a Guest Blogger Submission,welcome to write for us!
All Comments ( 0 )