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About Actuated On/Off Valves
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About Gradual On/Off Valves
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Gradual On/Off Valves with Quick-Clamp Fittings for High Vacuum
Also known as vacuum isolation valves, these block flow so you can install and remove gauges from your system. They can also be used to add or vent gases in high-vacuum systems. Valves gradually open and close with multiple turns of the wheel handle to prevent system damage from suddenly starting and stopping flow. They connect to another quick-clamp (ISO-KF) fitting with a clamp and a ring (sold separately). All have a nonrising stem that stays in the same position whether the valve is open or closed. Body is 304 stainless steel for good corrosion resistance.

- Valve Type: Gate
- For Use With: Air
- For Tube Material: 304/304L Stainless Steel, 316/316L Stainless Steel
- Seal Material: Viton® Fluoroelastomer Rubber
- Specifications Met: ISO 2861
O'all | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Tube OD | Flange OD | High Vacuum Connection Type | Max. Vacuum | Temp. Range, °F | Ht. | Lg. | High-Vacuum Flange Size | Sterilize With | Stem Type | Each | |
Quick Clamp | |||||||||||
304 Stainless Steel Body—316 Stainless Steel Gate | |||||||||||
| 1/2" | 1 3/16" | ISO-KF | 10 -8 torr @ 72° F | 0° to 190° | 4 1/8" | 2 1/4" | 10 | Steam (Autoclaving) | Nonrising | 00000000 | 0000000 |
| 3/4" | 1 3/16" | ISO-KF | 10 -8 torr @ 72° F | 0° to 190° | 4 1/8" | 2 1/4" | 16 | Steam (Autoclaving) | Nonrising | 00000000 | 000000 |
| 1" | 1 9/16" | ISO-KF | 10 -8 torr @ 72° F | 0° to 190° | 5 5/8" | 3" | 25 | Steam (Autoclaving) | Nonrising | 00000000 | 000000 |
| 1 1/2" | 2 1/8" | ISO-KF | 10 -8 torr @ 72° F | 0° to 190° | 6 3/8" | 3 7/8" | 40 | Steam (Autoclaving) | Nonrising | 00000000 | 000000 |
| 2" | 2 15/16" | ISO-KF | 10 -8 torr @ 72° F | 0° to 190° | 8" | 4 1/2" | 50 | Steam (Autoclaving) | Nonrising | 00000000 | 000000 |



- For Use With: Air
- O-Ring Material: Viton® Fluoroelastomer Rubber
- For Tube Material: 304/304L Stainless Steel, 316/316L Stainless Steel, Aluminum
- Inner Ring Material: 304 Stainless Steel
- Specifications Met: ISO 2861
Use these rings with quick-clamp high-vacuum fittings. They consist of a stainless steel inner ring covered by a fluoroelastomer O-ring.
Rings with screen have a stainless steel screen to filter out large particles.
| For Tube OD | For Flange OD | For High-Vacuum Flange Size | Max. Vacuum | Temp. Range, °F | Lg. | Max. Pressure | Each | |
Rings | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/2" | 1.18" | 10 | 10 -8 torr @ 72° F | 0° to 300° | 5/16" | Not Rated | 00000000 | 00000 |
| 3/4" | 1.18" | 16 | 10 -8 torr @ 72° F | 0° to 300° | 5/16" | Not Rated | 00000000 | 0000 |
| 1" | 1.57" | 25 | 10 -8 torr @ 72° F | 0° to 300° | 5/16" | Not Rated | 0000000 | 00000 |
| 1 1/2" | 2.16" | 40 | 10 -8 torr @ 72° F | 0° to 300° | 5/16" | Not Rated | 0000000 | 00000 |
| 2" | 2.95" | 50 | 10 -8 torr @ 72° F | 0° to 300° | 5/16" | Not Rated | 0000000 | 00000 |
Rings with Stainless Steel Screen | ||||||||
| 3/4" | 1.18" | 16 | 10 -8 torr @ 72° F | 0° to 300° | 5/16" | Not Rated | 00000000 | 00000 |
| 1" | 1.57" | 25 | 10 -8 torr @ 72° F | 0° to 300° | 5/16" | Not Rated | 00000000 | 00000 |
| 1 1/2" | 2.16" | 40 | 10 -8 torr @ 72° F | 0° to 300° | 5/16" | Not Rated | 00000000 | 00000 |
| 2" | 2.95" | 50 | 10 -8 torr @ 72° F | 0° to 300° | 5/16" | Not Rated | 00000000 | 00000 |
Rings with Aluminum Outer Ring | ||||||||
| 3/4" | 1.18" | 16 | 10 -8 torr @ 72° F | 0° to 300° | 5/16" | Not Rated | 00000000 | 00000 |
| 1" | 1.57" | 25 | 10 -8 torr @ 72° F | 0° to 300° | 5/16" | 100 psi @ 72° F | 0000000 | 00000 |
| 1 1/2" | 2.16" | 40 | 10 -8 torr @ 72° F | 0° to 300° | 5/16" | 75 psi @ 72° F | 0000000 | 00000 |
| 2" | 2.95" | 50 | 10 -8 torr @ 72° F | 0° to 300° | 5/16" | 50 psi @ 72° F | 0000000 | 00000 |
Premium Compact Solenoid On/Off Valves

- For Use With: Water, Oil, Air, Argon, Helium, Neon, Xenon, Krypton
- Seal Material: Buna-N Rubber
- Environmental Rating: NEMA 3S, NEMA 4X
- Specifications Met: UL Listed, CSA-US Certified, CSA Certified, CE Marked
Comparable to Asco Red Hat 8210G Series and Parker Gold Ring 23C Series, these valves meet the highest quality standards. They operate on electricity to automatically start and stop flow.
Valves don’t require a minimum pressure drop between the inlet and outlet for operation. The actuator is directly mounted to the valve body to minimize movement and reduce wear. These valves meet NEMA 3S and 4X for resistance to washdowns, splashing water, corrosive liquid, and dust.
Normally closed valves are closed unless actuated. Normally open valves are open unless actuated.
304 stainless steel valves are more corrosion resistant than 430 stainless steel 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.
Valves | Replacement Solenoid Coils | Repair Kits for Flow-Control Valves | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Gender | Thread Type | Flow Coefficient (Cv) | Max. Pressure | Pressure Drop | Temp. Range, °F | Valve Lg. | O'all Ht. | Each | Each | Each | |||
304 Stainless Steel Body with Wire Leads | ||||||||||||||
Normally Closed—24V DC | ||||||||||||||
| 1/8 | Female | NPT | 0.21 | 145 psi @ 130° F | Zero Pressure Drop | 35° to 180° | 1 3/16" | 2 7/8" | 00000000 | 0000000 | 0000000 | 000000 | 00000000 | 000000 |
| 1/4 | Female | NPT | 0.06 | 500 psi @ 130° F | Zero Pressure Drop | 35° to 180° | 1 9/16" | 2 15/16" | 00000000 | 000000 | 0000000 | 00000 | 00000000 | 00000 |
| 1/4 | Female | NPT | 0.21 | 145 psi @ 130° F | Zero Pressure Drop | 35° to 180° | 1 9/16" | 2 15/16" | 00000000 | 000000 | 0000000 | 00000 | 00000000 | 00000 |
| 1/4 | Female | NPT | 0.35 | 85 psi @ 130° F | Zero Pressure Drop | 35° to 180° | 1 9/16" | 2 15/16" | 00000000 | 000000 | 0000000 | 00000 | 00000000 | 00000 |
| 1/4 | Female | NPT | 0.73 | 25 psi @ 130° F | Zero Pressure Drop | 35° to 180° | 1 9/16" | 2 15/16" | 00000000 | 000000 | 0000000 | 00000 | 00000000 | 00000 |
Normally Closed—120V AC | ||||||||||||||
| 1/8 | Female | NPT | 0.35 | 120 psi @ 130° F | Zero Pressure Drop | 35° to 180° | 1 3/16" | 2 7/8" | 00000000 | 000000 | 000000 | 000000 | 00000000 | 00000 |
| 1/4 | Female | NPT | 0.06 | 725 psi @ 130° F | Zero Pressure Drop | 35° to 180° | 1 9/16" | 2 15/16" | 00000000 | 000000 | 0000000 | 00000 | 00000000 | 00000 |
| 1/4 | Female | NPT | 0.21 | 160 psi @ 130° F | Zero Pressure Drop | 35° to 180° | 1 9/16" | 2 15/16" | 00000000 | 000000 | 000000 | 000000 | 00000000 | 00000 |
| 1/4 | Female | NPT | 0.35 | 90 psi @ 130° F | Zero Pressure Drop | 35° to 180° | 1 9/16" | 2 15/16" | 00000000 | 000000 | 000000 | 000000 | 00000000 | 00000 |
| 1/4 | Female | NPT | 0.52 | 145 psi @ 130° F | Zero Pressure Drop | 35° to 180° | 1 9/16" | 3 1/8" | 00000000 | 000000 | 000000 | 000000 | 00000000 | 000000 |
| 1/4 | Female | NPT | 0.88 | 30 psi @ 130° F | Zero Pressure Drop | 35° to 180° | 1 9/16" | 2 15/16" | 00000000 | 000000 | 000000 | 000000 | 00000000 | 00000 |
Normally Open—24V DC | ||||||||||||||
| 1/8 | Female | NPT | 0.21 | 95 psi @ 130° F | Zero Pressure Drop | 35° to 180° | 1 3/16" | 3" | 00000000 | 000000 | 0000000 | 00000 | 00000000 | 000000 |
| 1/4 | Female | NPT | 0.06 | 400 psi @ 130° F | Zero Pressure Drop | 35° to 180° | 1 9/16" | 3 1/8" | 00000000 | 000000 | 0000000 | 00000 | 00000000 | 000000 |
| 1/4 | Female | NPT | 0.21 | 95 psi @ 130° F | Zero Pressure Drop | 35° to 180° | 1 9/16" | 3 1/8" | 00000000 | 000000 | 0000000 | 00000 | 00000000 | 000000 |
Normally Open—120V AC | ||||||||||||||
| 1/8 | Female | NPT | 0.21 | 180 psi @ 130° F | Zero Pressure Drop | 35° to 180° | 1 3/16" | 3" | 00000000 | 000000 | 000000 | 000000 | 00000000 | 000000 |
| 1/4 | Female | NPT | 0.06 | 750 psi @ 130° F | Zero Pressure Drop | 35° to 180° | 1 9/16" | 3 1/8" | 00000000 | 000000 | 000000 | 000000 | 00000000 | 000000 |
| 1/4 | Female | NPT | 0.21 | 180 psi @ 130° F | Zero Pressure Drop | 35° to 180° | 1 9/16" | 3 1/8" | 00000000 | 000000 | 000000 | 000000 | 00000000 | 000000 |
Solenoid On/Off Valves for Coolant and Detergent
These valves operate on electricity to automatically start and stop flow. The actuator is directly mounted to the valve body to minimize movement and reduce wear.
Normally closed valves are closed unless actuated. 304 stainless steel valves are more corrosion resistant than nickel-plated and plain brass valves.
Zero pressure drop valves don’t require a minimum pressure drop between the inlet and outlet for operation.
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 Use With: Ethylene Glycol, Soap Solutions
Valves | Replacement Copper Solenoid Coils | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Gender | Thread Type | Flow Coefficient (Cv) | Max. Pressure | Pressure Drop | Temp. Range, °F | Valve Lg. | O'all Ht. | Each | Each | ||
Normally Closed—120V AC | ||||||||||||
| 1/2 | Female | NPT | 4 | 110 psi @ 400° F | Zero Pressure Drop | -320° to 400° | 3 1/4" | 7 3/16" | 0000000 | 0000000 | 0000000 | 0000000 |
| 1/2 | Female | NPT | 4 | 200 psi @ 400° F | Zero Pressure Drop | -320° to 400° | 3 1/4" | 7 3/16" | 0000000 | 000000 | 0000000 | 000000 |
| 1/2 | Female | NPT | 4 | 300 psi @ 400° F | Zero Pressure Drop | -320° to 400° | 3 1/4" | 8" | 0000000 | 00000000 | 0000000 | 000000 |
| 3/4 | Female | NPT | 8 | 110 psi @ 400° F | Zero Pressure Drop | -320° to 400° | 3 1/2" | 7 5/16" | 0000000 | 000000 | 0000000 | 000000 |
| 1 | Female | NPT | 13 | 110 psi @ 400° F | Zero Pressure Drop | -320° to 400° | 4 1/8" | 8" | 0000000 | 00000000 | 0000000 | 000000 |
| 1 | Female | NPT | 13 | 200 psi @ 400° F | Zero Pressure Drop | -320° to 400° | 4 1/8" | 8 7/8" | 0000000 | 00000000 | 0000000 | 000000 |
Solenoid On/Off Valves for Cryogenic Liquids
Built to withstand the extreme cold of liquid nitrogen and liquid oxygen, these valves are cleaned and bagged for high-purity applications. They operate on electricity to automatically start and stop flow.
All valves are normally closed unless actuated. The actuator is directly mounted to the valve body to minimize movement and reduce wear.
304 stainless steel valves are more corrosion resistant than brass and bronze valves. Pressure drop assisted valves require a minimum pressure drop between the inlet and the outlet for operation; the upstream pressure must be greater than the downstream pressure. Valves rated NEMA 4 and IP65 resist dust, splashing water, and washdowns.
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 Use With: Liquid Nitrogen, Liquid Oxygen
- Seal Material: PTFE Plastic
| Pipe Size | Gender | Thread Type | Flow Coefficient (Cv) | Max. Pressure | Pressure Drop | Temp. Range, °F | Valve Dia. | O'all Ht. | Environmental Rating | Each | |
Normally Closed—120V AC | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/4 | Female | NPT | 0.9 | 225 psi @ 120° F | Pressure Drop Assisted | -320° to 120° | 1 11/16" | 4 13/16" | IP65, NEMA 4 | 0000000 | 0000000 |
| 3/8 | Female | NPT | 1.9 | 225 psi @ 120° F | Pressure Drop Assisted | -320° to 120° | 1 11/16" | 4 13/16" | IP65, NEMA 4 | 0000000 | 000000 |
| 1/2 | Female | NPT | 2.8 | 225 psi @ 120° F | Pressure Drop Assisted | -320° to 120° | 1 11/16" | 5 1/4" | IP65, NEMA 4 | 0000000 | 000000 |

























