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.
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 |
Plastic Threaded Gradual On/Off Valves
- Valve Type: Gate
- For Use With: Water
- Seat Material: See Table
Plastic provides an economical and lightweight alternative to metal. These valves gradually open and close to prevent system damage from suddenly starting and stopping flow. Pull the handle to open the valve. All valves 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.
304 stainless steel gates are more durable than glass-filled polypropylene gates.
For technical drawings and 3-D models, click on a part number.
O'all | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Max. Pressure | Temp. Range, °F | Seat Material | End-to-End Lg. | Ht. | Lg. | Stem Type | Color | Each | |
NPT Female × NPT Female | ||||||||||
PVC Plastic Body—Glass-Filled Polypropylene Plastic Gate | ||||||||||
| 2 × 2 | 75 psi @ 120° F | 35° to 120° | Buna-N Rubber | 3 3/8" | 9 1/2" | 3 3/8" | Rising | White | 00000000 | 000000 |
PVC Plastic Body—304 Stainless Steel Gate | ||||||||||
| 2 × 2 | 40 psi @ 120° F | 35° to 120° | Santoprene Rubber | 3 1/2" | 10 1/4" | 3 3/8" | Rising | White | 0000000 | 00000 |
| 3 × 3 | 30 psi @ 120° F | 35° to 120° | Santoprene Rubber | 4 1/2" | 13" | 4 3/8" | Rising | White | 0000000 | 00000 |
NPT Female × NPT Male | ||||||||||
PVC Plastic Body—Glass-Filled Polypropylene Plastic Gate | ||||||||||
| 1 1/2 × 1 1/2 | 75 psi @ 120° F | 35° to 120° | Buna-N Rubber | 3 3/8" | 6 1/2" | 3 3/8" | Rising | White | 00000000 | 00000 |
PVC Plastic Body—304 Stainless Steel Gate | ||||||||||
| 2 × 2 | 40 psi @ 120° F | 35° to 120° | Santoprene Rubber | 3 1/2" | 10 1/4" | 3 3/8" | Rising | White | 0000000 | 00000 |
| 3 × 3 | 30 psi @ 120° F | 35° to 120° | Santoprene Rubber | 4 1/2" | 13" | 4 3/8" | Rising | White | 0000000 | 00000 |
NPT Male × NPT Male | ||||||||||
PVC Plastic Body—Glass-Filled Polypropylene Plastic Gate | ||||||||||
| 1 1/2 × 1 1/2 | 75 psi @ 120° F | 35° to 120° | Buna-N Rubber | 3 7/16" | 8 1/2" | 3 7/16" | Rising | White | 00000000 | 00000 |
PVC Plastic Body—304 Stainless Steel Gate | ||||||||||
| 3 × 3 | 15 psi @ 120° F | 35° to 120° | Santoprene Rubber | 4 1/2" | 13" | 4 3/8" | Rising | White | 0000000 | 00000 |
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 | 00000000 |
Plastic Socket-Connect Gradual On/Off Valves
Female ×
Socket-Connect Female
Female ×
Socket-Connect Male
Female ×
Threaded NPT Female
Male ×
Socket-Connect Male
- Valve Type: Gate
- For Use With: Water
For a lightweight and economical alternative to metal valves, these are made of plastic. Insert unthreaded pipe into the socket ends and bond with PVC primer and cement to create a permanent, leak-tight connection. Valves gradually open and close to prevent system damage from suddenly starting and stopping flow. Pull the handle to open the valve. All valves 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.
304 stainless steel gates are more durable than glass-filled polypropylene gates.
For technical drawings and 3-D models, click on a part number.
O'all | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Max. Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Stem Type | Color | Each | |
Socket Connect Female × Socket Connect Female | |||||||||
PVC Plastic Body—Glass-Filled Polypropylene Plastic Gate | |||||||||
| 1 1/2 × 1 1/2 | 75 psi @ 120° F | 35° to 120° | 3 3/8" | 8 1/2" | 3 3/16" | Rising | White | 00000000 | 000000 |
| 2 × 2 | 40 psi @ 120° F | 35° to 120° | 3 1/2" | 9 3/4" | 3 7/16" | Rising | White | 00000000 | 00000 |
PVC Plastic Body—304 Stainless Steel Gate | |||||||||
| 2 × 2 | 40 psi @ 120° F | 35° to 120° | 3 1/2" | 10 1/4" | 3 3/8" | Rising | White | 0000000 | 00000 |
| 3 × 3 | 30 psi @ 120° F | 35° to 120° | 4 1/2" | 13" | 4 3/8" | Rising | White | 0000000 | 00000 |
| 4 × 4 | 20 psi @ 120° F | 35° to 120° | 5 3/16" | 18" | 6 11/16" | Rising | White | 0000000 | 00000 |
| 6 × 6 | 10 psi @ 120° F | 35° to 120° | 11 1/8" | 31 1/8" | 6 5/8" | Rising | White | 0000000 | 000000 |
Socket Connect Female × Socket Connect Male | |||||||||
PVC Plastic Body—Glass-Filled Polypropylene Plastic Gate | |||||||||
| 1 1/2 × 1 1/2 | 75 psi @ 120° F | 35° to 120° | 3 3/8" | 8 1/2" | 3 1/4" | Rising | White | 00000000 | 00000 |
| 2 × 2 | 40 psi @ 120° F | 35° to 120° | 3 1/2" | 9 3/4" | 3 7/16" | Rising | White | 00000000 | 00000 |
PVC Plastic Body—304 Stainless Steel Gate | |||||||||
| 2 × 2 | 40 psi @ 120° F | 35° to 120° | 3 1/2" | 10 1/4" | 3 3/8" | Rising | White | 0000000 | 00000 |
| 3 × 3 | 30 psi @ 120° F | 35° to 120° | 4 1/2" | 13" | 4 3/8" | Rising | White | 0000000 | 00000 |
Socket Connect Female × Threaded NPT Female | |||||||||
PVC Plastic Body—Glass-Filled Polypropylene Plastic Gate | |||||||||
| 1 1/2 × 1 1/2 | 75 psi @ 120° F | 35° to 120° | 3 3/8" | 8 1/2" | 3 1/4" | Rising | White | 00000000 | 00000 |
PVC Plastic Body—304 Stainless Steel Gate | |||||||||
| 2 × 2 | 40 psi @ 120° F | 35° to 120° | 3 1/2" | 10 1/4" | 3 3/8" | Rising | White | 0000000 | 00000 |
| 3 × 3 | 30 psi @ 120° F | 35° to 120° | 4 1/2" | 13" | 4 3/8" | Rising | White | 0000000 | 00000 |
Socket Connect Male × Socket Connect Male | |||||||||
PVC Plastic Body—Glass-Filled Polypropylene Plastic Gate | |||||||||
| 1 1/2 × 1 1/2 | 75 psi @ 120° F | 35° to 120° | 3 3/8" | 8 1/2" | 3 3/16" | Rising | White | 00000000 | 00000 |
| 2 × 2 | 40 psi @ 120° F | 35° to 120° | 3 1/2" | 9 3/4" | 3 7/16" | Rising | White | 00000000 | 00000 |
PVC Plastic Body—304 Stainless Steel Gate | |||||||||
| 2 × 2 | 40 psi @ 120° F | 35° to 120° | 3 1/2" | 10 1/4" | 3 3/8" | Rising | White | 0000000 | 00000 |
| 3 × 3 | 30 psi @ 120° F | 35° to 120° | 4 1/2" | 13" | 4 3/8" | Rising | White | 0000000 | 00000 |