About Gradual On/Off Valves
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Threaded Gradual On/Off Valves
Also known as gate valves, these valves gradually open and close to prevent system damage from suddenly starting and stopping flow.
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 nonrising stem keep the stem in the same position whether they’re open or closed. They’re often used underground and in low-clearance locations.
316 stainless steel valves resist corrosion better than bronze, brass, and cast iron valves.
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: See Table
- Specifications Met: See Table
O'all | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size  | Flow Coefficient (Cv) | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | Stem Housing Connection Style | End-to-End Lg. | Ht. | Lg. | For Use With | Specifications Met | Each | |
NPT Female | ||||||||||||
| 1/2 | 17.6 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | Threaded | 2 1/8" | 4 1/2" | 2 3/4" | Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon, Steam | ASTM A351 | 4741K23 | 000000 |
| 3/4 | 32 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | Threaded | 2 5/16" | 4 7/8" | 2 3/4" | Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon, Steam | ASTM A351 | 4741K24 | 00000 |
| 1 | 54 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | Threaded | 2 11/16" | 5 3/8" | 3 1/8" | Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon, Steam | ASTM A351 | 4741K25 | 000000 |
| 1 1/4 | 97 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | Threaded | 2 15/16" | 6 5/16" | 3 1/8" | Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon, Steam | ASTM A351 | 4741K26 | 000000 |
| 1 1/2 | 135 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | Threaded | 3 1/8" | 7 1/2" | 3 15/16" | Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon, Steam | ASTM A351 | 4741K27 | 000000 |
| 2 | 230 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | Threaded | 3 11/16" | 8 3/8" | 3 15/16" | Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon, Steam | ASTM A351 | 4741K28 | 000000 |
Socket-Connect Gradual On/Off Valves
- Valve Type: Gate
- For Use With: Water, Oil, Air, Argon, Helium, Krypton, Neon, Xenon, Steam
- Packing Material: PTFE Plastic
- Specifications Met: ASTM A351
Insert unthreaded pipe into the socket ends and weld to create a permanent, leak-tight connection. Also known as gate valves, these valves gradually open and close with multiple turns of the wheel handle to prevent system damage from suddenly starting and stopping flow. Valves have a nonrising stem that stays in the same position whether the valve is open or closed. Body is 316 stainless steel for excellent corrosion resistance.
O'all | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Max. Pressure | Max. Steam Pressure | Temp. Range, °F | End-to-End Lg. | Ht. | Lg. | Stem Type | Each | |
Socket Connect Female | |||||||||
316 Stainless Steel Body and Gate | |||||||||
| 1/2 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | 2 1/8" | 4 1/2" | 2 3/4" | Nonrising | 4874K53 | 0000000 |
| 3/4 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | 2 5/16" | 4 13/16" | 2 3/4" | Nonrising | 4874K54 | 000000 |
| 1 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | 2 11/16" | 5 3/8" | 3 1/8" | Nonrising | 4874K55 | 000000 |
| 1 1/4 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | 3" | 6 5/16" | 3 1/8" | Nonrising | 4874K56 | 000000 |
| 1 1/2 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | 3 1/8" | 7 7/16" | 3 15/16" | Nonrising | 4874K57 | 000000 |
| 2 | 200 psi @ 350° F | 120 psi @ 350° F | 0° to 350° | 3 11/16" | 8 5/16" | 3 15/16" | Nonrising | 4874K58 | 000000 |