About Gradual On/Off Valves
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Flanged Gradual On/Off Valves
Rising Stem, and
Four Bolt Holes
Rising Stem, and
Eight Bolt Holes
Easier to install and remove than threaded or weld-on valves, these valves bolt to flanges. They’re often used in lines requiring frequent cleaning and maintenance, such as those for slurries. They open and close gradually, preventing system damage from sudden starts and stops in flow. Also known as gate valves.
Valves with a wheel handle open and close with multiple turns, providing more controlled, shock-resistant flow than valves with a pull handle. Valves with a rising stem lift the handle as they open and lower it as they close. At a glance, you can see if flow is on or off. The stem is isolated from what’s flowing through your line, giving these valves a longer lifespan than valves with a nonrising stem. This makes them good for critical lines and lines that need to be opened and closed frequently.
Steel valves resist impact better than cast iron valves.
- Valve Type: Gate
- For Use With: See table
- Specifications Met: See table
O'all | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size  | Pressure Class | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolt Hole Dia. | Bolts Included | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | For Use With | Specifications Met | Each | |
Flanged Stem Housing | |||||||||||||||||
| 2 | 150 | 6" | 4 3/4" | 4 | 3/4" | No | Not Rated | 285 psi @ 100° F | 150 psi @ 350° F | -20° to 800° | 7" | 19 3/8" | 7" | Water, Oil, Air, Steam | American Petroleum Institute Standard 600, ASTM A216 WCB | 00000000 | 0000000 |
| 2 1/2 | 150 | 7" | 5 1/2" | 4 | 3/4" | No | Not Rated | 285 psi @ 100° F | 150 psi @ 350° F | -20° to 800° | 7 1/2" | 19 7/8" | 7 1/2" | Water, Oil, Air, Steam | American Petroleum Institute Standard 600, ASTM A216 WCB | 00000000 | 000000 |
| 3 | 150 | 7 1/2" | 6" | 4 | 3/4" | No | Not Rated | 285 psi @ 100° F | 150 psi @ 350° F | -20° to 800° | 8" | 24" | 8" | Water, Oil, Air, Steam | American Petroleum Institute Standard 600, ASTM A216 WCB | 00000000 | 000000 |
| 4 | 150 | 9" | 7 1/2" | 8 | 3/4" | No | Not Rated | 285 psi @ 100° F | 150 psi @ 350° F | -20° to 800° | 9" | 27 1/2" | 9" | Water, Oil, Air, Steam | American Petroleum Institute Standard 600, ASTM A216 WCB | 00000000 | 00000000 |