Plug valves are not new inventions--in fact their inception may date back to the Roman times when they were employed in the city's plumbing system. They are no less useful today, and in fact as employed in directional flow systems as well as, in some cases, vacuum systems that create a moderate vacuum. They are used by the petroleum industry, sanitary industry, chemical processing as well as power plants.
As might be expected, plug valve types and styles vary to suit their application. These types and styles include natural gas plug valves, industrial plug valves, oil plug valve, 4-way plug valves, twin seal plug valve, to name a few. Below, you will find information about the various plug valve types and styles.
1. Use the oil plug valve and natural gas plug valve.
2. Applying the twin seal plug valve.
3. Use the 4-way plug valves.
Use plug valves with oil and natural gasThe plug valves that work well for natural gas and oil are generally lubricated and are the steel plug valve and also brass. This is because the steel and brass resist corrosion. The valves are also simple in that they have an on and off position.
Learn about twin seal plug valvesTwin seal plug valves have seating slips that help to improve the seal and they are designed to withstand pressures of 150 to 1500 pounds. The twin seal plug valves are used in pipeline stations as well as terminals, naval and aviation fueling systems.
Use 4-way plug valves4-way plug valves often have silicon seals to help make them more effective. The valves can be actuated either by a wrench or by a handle and worm drive. The 4-way plug valves work best to control what's known as directional flow, and can take the place of more than one "straightaway" valve.
- When you buy a plug valve, it's a good idea to match the application with the valve, as you can see from the above information. Should you have any questions about the plug valves, the manufacturers can help. The manufacturer can also explain about plug valve pricing and whether or not discounts are available.