English
Globe Valve
The primary function of a globe valve is for throttling, i.e. increasing or reducing the flow in the process as required. The secondary function is isolation, where the flow can be fully fully stopped. A third function is reduction. This can be achieved by designing the valve with an aperture in the seat area that is smaller than the line pipe diameter.
Globe valves are generally used for throttling operations. Operation of the valve is via a hand wheel or other manual or automatic operator. By turning the hand wheel, the stem rises, taking the plug further away from the seat, thus allowing larger flow aperture, for the process medium to pass through. The seat to seal interface is normally created by a “plug” on the end of the stem forcing onto a screwed insert (or machined surface directly on the internal of the valve body). Energisation is by mechanical force applied through the hand wheel down through the screwed stem. Globe valves can come in a number of configurations including straight, angled or oblique pattern. The design configuration affects the turbulence within the flow of the process and this is why these different configurations exists.
Globe Valve Specification
Globe valves are generally used for throttling operations. Operation of the valve is via a hand wheel or other manual or automatic operator. By turning the hand wheel, the stem rises, taking the plug further away from the seat, thus allowing larger flow aperture, for the process medium to pass through. The seat to seal interface is normally created by a “plug” on the end of the stem forcing onto a screwed insert (or machined surface directly on the internal of the valve body). Energisation is by mechanical force applied through the hand wheel down through the screwed stem. Globe valves can come in a number of configurations including straight, angled or oblique pattern. The design configuration affects the turbulence within the flow of the process and this is why these different configurations exists.
Globe Valve Specification
Globe Valves - General Design Criteria
- Plug Type Globe
- Full or Reduced Bore
- Rising Stem
- Outside Screw and Yoke (OS&Y)
- Manual Handwheel, Chainwheel, Gearbox or Actuator Operated
- Straight or angled pattern
- 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, Socket or 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 |
