English
Plug Valve
Plug valves are very similar to ball valves, again quarter turn
operation via manual hand lever or other actuating device. The seat to seal interface is created by the polished plug rotating within the valve body. It can be a straight plug, or a tapered plug depending on the performance required for the process conditions. Energisation is by mechanical force, which is built in to the valve at the assembly stage to the valve. Lubricated and lined plug valves also offer varying degrees of tight shut-off and operating torque requirements.
The primary function of a plug valve is isolation i.e. either fully open or fully closed and the secondary function can be reduction. This is achieved by tapering the valve bore and reducing the aperture in the through port in the middle of the plug.
Plug Valve Specification
operation via manual hand lever or other actuating device. The seat to seal interface is created by the polished plug rotating within the valve body. It can be a straight plug, or a tapered plug depending on the performance required for the process conditions. Energisation is by mechanical force, which is built in to the valve at the assembly stage to the valve. Lubricated and lined plug valves also offer varying degrees of tight shut-off and operating torque requirements.
The primary function of a plug valve is isolation i.e. either fully open or fully closed and the secondary function can be reduction. This is achieved by tapering the valve bore and reducing the aperture in the through port in the middle of the plug.
Plug Valve Specification
Plug Valves - General Design Criteria
- Tapered or Parallel Plug Options
- Manual Lever, Gear or Actuator Operated
- Bolted or Welded Construction
- Special Seat Design Options
- Operating temperature and fluids suitability - further information on request
- Firesafe / Cryogenic / Gas Service certified options
- Modification service available for all stock options
Standard Pressure Class Ratings / End Connections
- ANSI 150, 300, 600, 800, 1500 & 2500lb - Flanged RF, RTJ, Butt-Weld and Hub ends
- PN, API and other Pressure Class Valves available on request
| Common Materials of Construction | Material Specifications |
| Standard Carbon Steel | ASTM A105 A216 WCB WCC |
| Low temperature Carbon Steel | ASTM LF2 A352 LCC LCB |
| Stainless Steel | ASTM A182 F316 ASTM A182 F316L ASTM A182 F304 ASTM A182 F304L ASTM A182 F321 ASTM A182 F347 ASTM A351 CF8M ASTM A351 CF3M |
| Specials | F44 SMO F51 Duplex Super Duplex Monel Hastelloy Titanium Inconel Bronze Alu. Bronze |
| Other | Actuated |