About Gradual On/Off Valves
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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.
For technical drawings and 3-D models, click on a part number.
- Valve Type: Gate
- For Use With: Water, Oil
O'all | |||||||
|---|---|---|---|---|---|---|---|
| Pipe Size  | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
NPT Female | |||||||
| 1 1/4 | 200 psi @ 70° F | -20° to 150° | 2 15/16" | 4 1/4" | 3" | 0000000 | 0000000 |
High-Pressure Threaded Gradual On/Off Valves
Designed for use in refineries and other demanding environments, these durable valves have a forged steel body that can withstand at least twice the pressure of other threaded valves. They gradually open and close with multiple turns of the wheel handle to prevent system damage from suddenly starting and stopping flow. All have a rising stem that lifts as the valve opens and lowers as the valve closes to provide a visual indication of whether flow is on or off. Their flanged stem housing bolts in place and makes them easy to take apart for maintenance and repairs.
Full-port valves do not restrict flow, while standard-port valves slightly restrict flow.
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.
For technical drawings and 3-D models, click on a part number.
- Valve Type: Gate
- For Use With: Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon, Steam
- Packing Material: Graphite
- Specifications Met: American Petroleum Institute Standard 602, ASTM A105N
O'all | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Stem Type | Each | |
NPT Female | ||||||||||
Full Port | ||||||||||
| 1/4 | Not Rated | 1975 psi @ 100° F | 1100 psi @ 800° F | -20° to 800° | 3 1/8" | 6 5/8" | 3 7/16" | Rising | 0000000 | 000000 |
| 3/8 | 9 | 1975 psi @ 100° F | 1100 psi @ 800° F | -20° to 800° | 3 1/8" | 6 5/8" | 3 7/16" | Rising | 0000000 | 00000 |
| 1/2 | 20 | 1975 psi @ 100° F | 1100 psi @ 800° F | -20° to 800° | 3 9/16" | 7" | 3 7/16" | Rising | 0000000 | 000000 |
| 3/4 | 33 | 1975 psi @ 100° F | 1100 psi @ 800° F | -20° to 800° | 4 5/16" | 8 11/16" | 3 13/16" | Rising | 0000000 | 000000 |
| 1 | 60 | 1975 psi @ 100° F | 1100 psi @ 800° F | -20° to 800° | 5" | 9 3/4" | 5 7/16" | Rising | 0000000 | 000000 |
| 1 1/4 | 92 | 1975 psi @ 100° F | 1100 psi @ 800° F | -20° to 800° | 5 15/16" | 11 5/16" | 5 7/16" | Rising | 0000000 | 000000 |
| 1 1/2 | 142 | 1975 psi @ 100° F | 1100 psi @ 800° F | -20° to 800° | 7 1/16" | 12 15/16" | 5 7/16" | Rising | 0000000 | 000000 |
| 2 | 257 | 1975 psi @ 100° F | 1100 psi @ 800° F | -20° to 800° | 6" | 15 3/4" | 6 3/4" | Rising | 0000000 | 000000 |
Standard Port | ||||||||||
| 1/2 | 9 | 1975 psi @ 100° F | 1100 psi @ 800° F | -20° to 800° | 3 1/8" | 6 5/8" | 3 7/16" | Rising | 0000000 | 00000 |
| 3/4 | 19 | 1975 psi @ 100° F | 1100 psi @ 800° F | -20° to 800° | 3 9/16" | 7" | 3 7/16" | Rising | 0000000 | 00000 |
| 1 | 32 | 1975 psi @ 100° F | 1100 psi @ 800° F | -20° to 800° | 4 5/16" | 8 11/16" | 3 13/16" | Rising | 0000000 | 00000 |
| 1 1/2 | 92 | 1975 psi @ 100° F | 1100 psi @ 800° F | -20° to 800° | 5 15/16" | 11 5/16" | 5 7/16" | Rising | 0000000 | 000000 |
| 2 | 144 | 1975 psi @ 100° F | 1100 psi @ 800° F | -20° to 800° | 7 1/16" | 12 15/16" | 5 7/16" | Rising | 0000000 | 000000 |
- Valve Type: Gate
- For Use With: Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon, Steam
- Packing Material: Graphite
- Specifications Met: American Petroleum Institute Standard 602, ASTM A105N
O'all | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Stem Type | Each | |
NPT Female | ||||||||||
Standard Port | ||||||||||
| 3/4 | 18 | 3705 psi @ 100° F | 2060 psi @ 800° F | -20° to 800° | 4 5/16" | 8 7/16" | 3 13/16" | Rising | 0000000 | 0000000 |
| 1 | 30 | 3705 psi @ 100° F | 2060 psi @ 800° F | -20° to 800° | 5" | 9 3/4" | 5 7/16" | Rising | 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.
Wheel handles open and close with multiple turns, providing more controlled, shock-resistant flow than pull 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.
For technical drawings and 3-D models, click on a part number.
- Valve Type: Gate
- For Use With: Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon, Steam
- Packing Material: Graphite
- Specifications Met: American Petroleum Institute Standard 600, ASTM A216 WCB
O'all | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Bolt Hole Dia. | Flange OD | Bolt Circle Dia. | No. of Bolt Holes | Pressure Class | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Each | |
| 2 | 3/4" | 6" | 4 3/4" | 4 | 150 | 285 psi @ 100° F | 150 psi @ 365° F | -20° to 800° | 7" | 19 3/8" | 7" | 00000000 | 0000000 |
| 2 1/2 | 3/4" | 7" | 5 1/2" | 4 | 150 | 285 psi @ 100° F | 150 psi @ 365° F | -20° to 800° | 7 1/2" | 19 7/8" | 7 1/2" | 00000000 | 000000 |
| 3 | 3/4" | 7 1/2" | 6" | 4 | 150 | 285 psi @ 100° F | 150 psi @ 365° F | -20° to 800° | 8" | 24" | 8" | 00000000 | 000000 |
| 4 | 3/4" | 9" | 7 1/2" | 8 | 150 | 285 psi @ 100° F | 150 psi @ 365° F | -20° to 800° | 9" | 27 1/2" | 9" | 00000000 | 00000000 |
High-Pressure Socket-Connect Gradual On/Off Valves
- Valve Type: Gate
- For Use With: Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon, Steam
- Specifications Met: American Petroleum Institute Standard 602, ASTM A105N
With a forged steel body and bolted construction that can withstand at least twice the pressure of other socket-connect valves, these are often used in refineries and other demanding environments. Insert unthreaded pipe into the socket ends and weld to create a permanent, leak-tight connection. They gradually open and close with multiple turns of the wheel handle to prevent system damage from suddenly starting and stopping flow. All have a rising stem that lifts as the valve opens and lowers as the valve closes to provide a visual indication of whether flow is on or off.
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.
For technical drawings and 3-D models, click on a part number.
O'all | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flow Coefficient (Cv) | Pressure Class | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Stem Type | Each | |
Socket Connect Female | |||||||||||
Steel Body and Gate | |||||||||||
| 1/4 | Not Rated | 800 | 1975 psi @ 100° F | 715 psi @ 800° F | -20° to 800° | 3 1/4" | 6 3/8" | 3 1/2" | Rising | 0000000 | 000000 |
| 3/8 | 9 | 800 | 1975 psi @ 100° F | 715 psi @ 800° F | -20° to 800° | 3 1/4" | 6 3/8" | 3 1/2" | Rising | 0000000 | 00000 |
| 1/2 | 9 | 800 | 1975 psi @ 100° F | 715 psi @ 800° F | -20° to 800° | 3 3/16" | 6 1/2" | 3 7/8" | Rising | 0000000 | 00000 |
| 3/4 | 19 | 800 | 1975 psi @ 100° F | 715 psi @ 800° F | -20° to 800° | 3 1/2" | 6 1/2" | 3 7/8" | Rising | 0000000 | 00000 |
| 1 | 32 | 800 | 1975 psi @ 100° F | 715 psi @ 800° F | -20° to 800° | 4 3/8" | 8 1/4" | 4 1/4" | Rising | 0000000 | 00000 |
| 1 1/4 | 92 | 800 | 1975 psi @ 100° F | 715 psi @ 800° F | -20° to 800° | 5" | 11" | 6" | Rising | 0000000 | 000000 |
| 1 1/2 | 92 | 800 | 1975 psi @ 100° F | 715 psi @ 800° F | -20° to 800° | 5" | 10 5/8" | 6" | Rising | 0000000 | 000000 |
| 2 | 144 | 800 | 1975 psi @ 100° F | 715 psi @ 800° F | -20° to 800° | 5 3/8" | 11" | 6" | Rising | 0000000 | 000000 |