Plug valves are effective tight shut-off and on valves, suitable for use systems as well as with corrosive & hazardous liquids and gas. They are often used in the following applications:
- Chemical service
- Corrosive substances
- Vacuum to high-pressure
- Oil piping systems
- Extreme temperature flow applications (-196°C to +800°C)
- High-pressure flow applications
Different types of Plug Valves
Two-Port Valves
A two-port valve features two ports allowing fluid to enter or leave, it has two positions, open to allow flow and closed to stop the flow. A two-port valve has one passageway, for flow to pass through it.
The ports are usually at parallel ends of the valve body; therefore, the plug is rotated a fourth of a full turn to change from open to shut positions.
Related products
S50 - LIFT PLUG VALVE
Multi-Port Valves
A multi-port valve is used to divert flow or combine flow.
In a three-way plug valve, flow from one port could be directed to either the second or third port. It can also be designed to connect all three ports together, or shift flow between ports 1 and 2, 2 and 3, or 1 and 3, and possibly even connect all three ports together.
Related products
S51 - LIFT PLUG VALVE, S57 - SHUT OFF COCK - COKE OVEN GAS VALVE
Further information
The Curtiss-Wright Valves Division has locations in the USA, Europe and Asia. Combined with our extensive distributor network and after-sales support partners, you can be assured that we have local expertise to assist you, wherever you may be located.
To find out further information on any product, read the related documents which feature assemblies and capabilities, to contact a sales office directly click here or use our on-line form, which can be found here.
FAQ
What is the difference between a plug valve and a ball valve?
A ball valve has a spherical disc with a hollow centre, and a plug valve has a cylindrical or conical disc with bored passages going through it.
Both valves have similarities, including their closing and opening mechanisms and the flow-directing possibilities in multi-port plug valves are similar to the possibilities in corresponding multi-port ball valves. One of the main differences is the disc in a ball valve is smaller in size than the disc in a plug valve.
What are the different types of valves?
Curtiss Wright Valve Divison supplies a variety of different valve types, including: Butterfly, Changeover, Check, Control, Directional Control, Gate, Globe, Plug, Pressure Relief.
Each valve type has a number of models each with different features and functional capabilities, suitable to a range of applications.