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About Gradual On/Off Valves
More
Threaded Gradual On/Off Valves
Also known as gate valves, these gradually open and close to prevent system damage from suddenly starting and stopping flow.
Pull handles open and close faster than wheel handles.
Rising stems lift as the valve opens and lower as the valve closes to provide a visual indication of whether flow is on or off. The stem is isolated from the process media for a longer service life than valves with a nonrising stem.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
- Valve Type: Gate
- For Use With: Oil, Air, Argon, Helium, Krypton, Neon, Xenon
O'all | ||||||||
|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
NPT Female | ||||||||
| 1 | 80 | 20 psi @ 1000° F | -40° to 1000° | 2 13/16" | 9 3/8" | 3 5/16" | 0000000 | 0000000 |
| 1 1/2 | 115 | 20 psi @ 1000° F | -40° to 1000° | 2 13/16" | 9 3/8" | 3 5/16" | 0000000 | 000000 |
| 2 | 170 | 20 psi @ 1000° F | -40° to 1000° | 2 13/16" | 10 5/8" | 4" | 0000000 | 000000 |
| 2 1/2 | 245 | 20 psi @ 1000° F | -40° to 1000° | 2 13/16" | 11 5/8" | 4 1/2" | 0000000 | 000000 |
| 3 | 550 | 20 psi @ 1000° F | -40° to 1000° | 3 5/16" | 12 5/8" | 5" | 0000000 | 000000 |
| 4 | 685 | 10 psi @ 1000° F | -40° to 1000° | 3 5/16" | 14 5/8" | 6" | 0000000 | 000000 |
| 6 | 2,150 | 5 psi @ 1000° F | -40° to 1000° | 3 13/16" | 18 5/8" | 8" | 0000000 | 000000 |
Flanged Gradual On/Off Valves
Rising Stem, and
Eight Bolt Holes
Bolt these valves to flanges. They gradually open and close to prevent system damage from suddenly starting and stopping flow.
Pull handles open and close faster than wheel handles.
Rising stems lift as the valve opens and lower as the valve closes to provide a visual indication of whether flow is on or off. The stem is isolated from the process media for a longer service life than valves with a nonrising stem.
Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.
- Valve Type: Gate
- For Use With: Oil, Air, Argon, Helium, Krypton, Neon, Xenon
- Packing Material: Graphite
O'all | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Bolt Hole Dia. | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Bolts Included | Flow Coefficient (Cv) | Pressure Class | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
| 4 | 3/4" | 9" | 7 1/2" | 8 | No | 685 | 125 | 10 psi @ 1000° F | -40° to 1000° | 5 1/4" | 15 5/8" | 6" | 0000000 | 0000000 |
| 6 | 7/8" | 11" | 9 1/2" | 8 | No | 2,150 | 125 | 5 psi @ 1000° F | -40° to 1000° | 5 3/4" | 20" | 8" | 0000000 | 000000 |