About Backflow-Prevention Valves
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About On/Off Valves
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How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
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On/Off Valves with Push-to-Connect Fittings
Insert tubing into the fittings on these valves—no heat, solder, or flux required.
Screwdriver-operated valves resist accidental movement when snagged or bumped. They require a slotted screwdriver (not included) to open and close.
Standard-port valves slightly restrict flow.
For technical drawings and 3-D models, click on a part number.
- Valve Type: Ball
- For Use With: Air, Water
- Seal Material:
Push to Connect × Push to Connect: EPDM Rubber
BSPP Male × Push to Connect: Buna-N Rubber
| Pipe Size  | For Tube OD | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | Vacuum Rating, in. of Hg | Port Type | End-to-End Lg. | Each | |
Black Nylon Plastic Body | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Push to Connect × Push to Connect | |||||||||
| __ | 4mm | Not Rated | 145 psi @ 175° F | 0° to 175° | 28 | Standard | 2" | 0000000 | 000000 |
| __ | 6mm | Not Rated | 145 psi @ 175° F | 0° to 175° | 28 | Standard | 2" | 0000000 | 00000 |
| __ | 8mm | Not Rated | 145 psi @ 175° F | 0° to 175° | 28 | Standard | 2" | 0000000 | 00000 |
| __ | 10mm | Not Rated | 145 psi @ 175° F | 0° to 175° | 28 | Standard | 2 5/8" | 0000000 | 00000 |
| __ | 12mm | Not Rated | 145 psi @ 175° F | 0° to 175° | 28 | Standard | __ | 0000000 | 00000 |
BSPP Male × Push to Connect | |||||||||
| 1/8 | 6mm | Not Rated | 145 psi @ 175° F | 0° to 175° | Not Rated | Standard | 2 7/16" | 0000000 | 00000 |
| 1/4 | 8mm | Not Rated | 145 psi @ 175° F | 0° to 175° | Not Rated | Standard | 2 3/8" | 0000000 | 00000 |
| 3/8 | 10mm | Not Rated | 145 psi @ 175° F | 0° to 175° | Not Rated | Standard | 2 7/8" | 0000000 | 00000 |
| 1/2 | 12mm | Not Rated | 145 psi @ 175° F | 0° to 175° | Not Rated | Standard | 2" | 0000000 | 00000 |
On/Off Valves with Yor-Lok Fittings
For extra gripping power and a strong seal, the Yor-Lok fittings on these valves have two sleeves that bite into tubing as you tighten the nut. All are compatible with Swagelok®, Let-Lok, and Parker A-Lok fittings. Valves are standard port, so they slightly restrict flow.
316 stainless steel valves are more corrosion resistant than brass valves.
Lockable lever handles can be fixed in place using a padlock (not included) with a shackle diameter up to 11/32".
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: Ball
- For Use With: Argon, Helium, Krypton, Neon, Oil, Water, Xenon
- Seal Material: PTFE Plastic
| For Tube OD | Flow Coefficient (Cv) | Max. Pressure | Temperature Range, °F | End-to-End Lg. | For Max. Shackle Dia. | Each | |
316 Stainless Steel Body | |||||||
|---|---|---|---|---|---|---|---|
Yor Lok × Yor Lok | |||||||
| 6mm | 1.3 | 2000 psi @ 100° F | -30° to 400° | 3 9/16" | 11/32" | 0000000 | 000000 |
| 8mm | 1.4 | 2000 psi @ 100° F | -30° to 400° | 3 9/16" | 11/32" | 0000000 | 00000 |
| 10mm | 2.6 | 2000 psi @ 100° F | -30° to 400° | 3 9/16" | 11/32" | 0000000 | 000000 |
| 12mm | 9.3 | 2000 psi @ 100° F | -30° to 400° | 3 3/4" | 11/32" | 0000000 | 000000 |
| 15mm | 9.3 | 2000 psi @ 100° F | -30° to 400° | 3 3/4" | 11/32" | 0000000 | 000000 |
Plastic On/Off Valves with Push-to-Connect Fittings for Drinking Water
- Valve Type: Plug
- For Use With: Drinking Water
- Seal Material: EPDM Rubber
- Specifications Met: NSF/ANSI 61
Insert tubing into the fittings—no heat, solder, or flux required. These valves meet NSF/ANSI 61 for use in drinking water systems. All are full port, so they do not restrict flow.
For technical drawings and 3-D models, click on a part number.
| For Tube OD | Max. Pressure | Temperature Range, °F | End-to-End Lg. | Each | |
White Polypropylene Plastic Body | |||||
|---|---|---|---|---|---|
Straight—Push to Connect × Push to Connect | |||||
| 6mm | 230 psi @ 70° F | 35° to 140° | 1 15/16" | 0000000 | 000000 |
| 8mm | 230 psi @ 70° F | 35° to 140° | 2 1/2" | 0000000 | 00000 |
| 10mm | 145 psi @ 70° F | 35° to 140° | 2 1/2" | 0000000 | 00000 |
| 12mm | 145 psi @ 70° F | 35° to 140° | 2 3/4" | 0000000 | 00000 |
On/Off Valves with Push-to-Connect Fittings for Food and Beverage
Insert tubing into the push-to-connect fittings on these valves—no heat, solder, or flux required. They meet NSF/ANSI 51 for safe use with food and NSF/ANSI 61 for safe use with drinking water.
Full-port valves do not restrict flow.
- Valve Type: Ball
- For Use With: Food, Beverage
- Seal Material: EPDM Rubber
- Specifications Met: NSF/ANSI 51, NSF/ANSI 61
For Tube | ||||||
|---|---|---|---|---|---|---|
| OD | Max. Pressure | Temperature Range, °F | Port Type | End-to-End Lg. | Each | |
Straight | ||||||
Push to Connect × Push to Connect | ||||||
| 6mm × 6mm | 230 psi @ 200° F | 35° to 200° | Full | 2 1/4" | 0000000 | 000000 |
| 8mm × 8mm | 230 psi @ 200° F | 35° to 200° | Full | 2 5/8" | 0000000 | 00000 |
| 10mm × 10mm | 230 psi @ 200° F | 35° to 200° | Full | 2 11/16" | 0000000 | 00000 |
| 12mm × 12mm | 230 psi @ 200° F | 35° to 200° | Full | 3 3/8" | 0000000 | 00000 |
90° Elbow | ||||||
Push to Connect × Push to Connect | ||||||
| 6mm × 6mm | 230 psi @ 70° F | 35° to 200° | Full | __ | 00000000 | 00000 |
| 8mm × 8mm | 230 psi @ 70° F | 35° to 200° | Full | __ | 00000000 | 00000 |
| 10mm × 10mm | 230 psi @ 70° F | 35° to 200° | Full | __ | 00000000 | 00000 |
Check Valves with Yor-Lok Fittings
Two sleeves give these fittings extra gripping power. They bite into tubing as you tighten the nut to form a strong seal. All are compatible with Swagelok®, Let-Lok, and Parker A-Lok fittings. Valves open to allow flow in one direction and close when flow stops or reverses.
316 stainless steel valves are more corrosion resistant than brass 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.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Argon, Helium, Krypton, Neon, Water, Xenon
- Piston Material: 316 Stainless Steel
- Spring Material: 302 Stainless Steel
- Seal Material: Fluoroelastomer Rubber
| For Tube OD | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | End-to-End Lg. | Each | |
Yor-Lok Female Inlet × Yor-Lok Female Outlet | |||||||
|---|---|---|---|---|---|---|---|
| 12mm | 1.68 | 3,000 psi @ 70° F | 0.33 | -10° to 375° | 3 1/16" | 00000000 | 0000000 |
| 10mm | 1.68 | 3,000 psi @ 70° F | 0.33 | -10° to 375° | 2 1/2" | 00000000 | 000000 |
| 6mm | 0.47 | 3,000 psi @ 70° F | 0.33 | -10° to 375° | 2 3/8" | 00000000 | 000000 |
Check Valves with Push-to-Connect Fittings
Insert tubing into the push-to-connect fittings—no heat, solder, or flux required. These valves open to allow flow in one direction and close when flow stops or reverses.
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.
- For Use With:
Inch: Air, Argon, Helium, Krypton, Neon, Nirtrogen, Oil, Water, Xenon
Metric: Air, Helium, Krypton, Neon, Nitrogen, Oil, Water, Xenon - Piston Material: Brass
- Spring Material: 302 Stainless Steel
- Seal Material: See Table
| For Tube OD | Flow Coefficient (Cv) | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Seal Material | End-to-End Lg. | Each | |
| 4mm | Not Rated | 115 psi @ 70° F | 3 | 0° to 175° | Buna-N Rubber | 1 3/4" | 00000000 | 000000 |
| 6mm | Not Rated | 115 psi @ 70° F | 3 | 0° to 175° | Buna-N Rubber | 2 1/16" | 00000000 | 00000 |
| 8mm | Not Rated | 115 psi @ 70° F | 3 | 0° to 175° | Buna-N Rubber | 2 1/4" | 00000000 | 00000 |
Check Valves with Push-to-Connect Fittings for Drinking Water
- For Use With: Drinking Water
- Piston Material: Acetal Plastic
- Spring Material:
For 1/2", 8mm, and 10mm Tube ODs: Acetal Plastic
All other sizes: Stainless Steel - Seal Material: See table
Insert tubing into the push-to-connect fittings on these valves—no heat, solder, or flux required. Valves meet NSF/ANSI 61 for use in drinking water systems. All open to allow flow in one direction and close when flow stops or reverses.
For technical drawings and 3-D models, click on a part number.
| For Tube OD | Max. Pressure | Min. Opening Pressure, psi | Temperature Range, °F | Seal Material | Color | End-to-End Lg. | Each | |
Acetal Plastic Body | ||||||||
|---|---|---|---|---|---|---|---|---|
Push to Connect × Push to Connect | ||||||||
| 6mm | 145 psi @ 150° F | 0.29 | 35° to 145° | EPDM Rubber | Black | 1 15/16" | 0000000 | 000000 |
| 8mm | 145 psi @ 70° F | 0.333 | 35° to 145° | EPDM Rubber | White | 1 15/16" | 0000000 | 00000 |
| 10mm | 145 psi @ 70° F | 0.333 | 35° to 145° | EPDM Rubber | White | 2 1/4" | 0000000 | 00000 |
| 12mm | 100 psi @ 150° F | 0.29 | 35° to 145° | EPDM Rubber/ Nitrile Rubber/ Silicone Rubber | Black | 2 11/16" | 000000 | 00000 |
Compressed Gas Fill Valves
Mount these valves onto compressed gas tanks. Also known as Schrader valves—which are typically used with compressed air—they have an internal spring that holds the valve shut when you depress the pin to add, remove, or check the pressure of compressed gas. Made of brass, these valves thread onto nuts more easily than valves made of harder metal. They also have good corrosion resistance. Valves have a thread cap to protect the stem from accidental gas release.
Valves for use with butane are commonly used on torches. They’re nickel plated for extra corrosion resistance.
Valves for use with nitrogen are often used in central heating systems.
For technical drawings and 3-D models, click on a part number.
Inlet | Outlet | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| For Use With | Thread Size | Thread Pitch, mm | Thread Size | Connection Length | Maximum Pressure, psi | Temperature Range, °F | Overall Length, mm | Hex Size, mm | Material | Each | |
Metric Male Threaded Pipe Inlet × Schrader Male Threaded Hose Outlet | |||||||||||
| Butane, Compressed Gas | M8 | 1 | 0.305"-32 | 7/16" | 425 | -40° to 225° | 23 | 12 | Nickel-Plated Brass | 0000000 | 00000 |
| Nitrogen, Compressed Gas | M10 | 1 | 0.305"-32 | 3/8" | 200 | -40° to 225° | 20 | 12 | Brass | 0000000 | 00000 |
Air Fill Valves
Also known as Schrader valves, these valves rapidly fill or empty compressed air tanks or pneumatic tires.
Brass valves are softer than other metals, so they’re easier to thread together. They have good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Pipe × Schrader Male
Threaded Hose
International Standard ISO Minimal-Spill
Quick-Disconnect Hose Couplings for Hydraulic Fluid
Also known as flush-face couplings, the plugs and sockets have a flat face, which allows them to mate close against each other, reducing fluid loss when connecting and disconnecting the line. A complete coupling consists of a plug and a socket (both sold separately) that connect and disconnect quickly. Use them when you need frequent access to a line. All of the International Standard ISO Minimal-Spill quick-disconnect plugs are compatible with any of the International Standard ISO Minimal-Spill quick-disconnect sockets of the same coupling size, regardless of the pipe size. Also known as double shut-off couplings, the plugs and sockets both have a shut-off valve that stops the flow when the coupling is separated. They are zinc-plated steel, which has excellent strength and durability and fair corrosion resistance.
Plugs are also known as nipples.
Sockets are push-to-connect style. To connect, push the plug into the socket until you hear a click. To disconnect, slide the sleeve on the socket forward until the plug ejects.
Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size. Pressure ratings are given for static (constant) pressure conditions.
Warning: Never attempt to connect or disconnect couplings when operating at maximum pressure. Stop the flow before you disconnect the line.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: See table
- Temperature Range: -20° to 212° F
- Compatible With: ISO 16028 Parker FEM, ISO 16028 Perfecting HT, ISO 16028 Snap-Tite 74
- Specifications Met: ISO 16028
- Maximum Pressure: 5,800 psi @ 72° F
- Temperature Range: -20° to 212° F
- Compatible With: ISO 16028 Parker FEM, ISO 16028 Perfecting HT, ISO 16028 Snap-Tite 74
- Specifications Met: ISO 16028
Varistors
Protect circuits from electrical spikes and surges. You’ll often find these varistors in surge protectors for programmable logic controllers (PLCs) and sensors. Also known as voltage-dependent resistors (VDRs), they change their response based on the voltage. When the voltage is high, their resistance drops to route excess current away from the primary flow. But when voltage is low, their resistance increases, sending current through the primary circuit flow instead of the varistor.
For technical drawings and 3-D models, click on a part number.
Lead | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Operating Voltage | Voltage @ 1mA Current | Maximum Voltage | Material | Lg., mm | Wire Dia., mm | Temp. Range, °F | Specifications Met | Pkg. Qty. | Pkg. | |
7 mm Dia. | ||||||||||
| 30V AC/38V DC | 42.3-51.7V DC | 93V AC | Copper-Plated Steel | 25 | 0.69 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
10 mm Dia. | ||||||||||
| 275V AC/369V DC | 387-473V DC | 710V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 0000 |
14 mm Dia. | ||||||||||
| 30V AC/38V DC | 42.3-51.7V DC | 93V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
| 130V AC/175V DC | 184.5-225.5V DC | 340V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
| 150V AC/200V DC | 216-264V DC | 395V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
| 250V AC/330V DC | 351-429V DC | 650V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
| 275V AC/369V DC | 387-473V DC | 710V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
| 320V AC/420V DC | 459-561V DC | 850V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
20 mm Dia. | ||||||||||
| 14V AC/18V DC | 20.7-25.3V DC | 43V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
| 21V AC/27V DC | 29.7-36.3V DC | 58V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
| 23V AC/28V DC | 32.4-39.6V DC | 63V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
| 130V AC/175V DC | 184.5-225.5V DC | 340V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
| 130V AC/175V DC | 190-220V DC | 325V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
| 150V AC/200V DC | 216-243V DC | 360V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
| 150V AC/200V DC | 216-264V DC | 395V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
| 250V AC/330V DC | 351-429V DC | 650V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
| 275V AC/369V DC | 387-473V DC | 710V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
| 275V AC/369V DC | 389-453V DC | 680V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
| 320V AC/420V DC | 462-540V DC | 810V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
| 575V AC/730V DC | 819-960V DC | 1,410V AC | Copper-Plated Steel | 25 | 0.86 | -65° to 185° | MIL-STD-202, UL 94 V-0 | 20 | 0000000 | 00000 |
Flow-Control Mufflers
Adjust the flow by turning the screw. Use these mufflers with air-powered tools and cylinders to reduce noise and filter exhaust fumes.
For mufflers with an external hex drive, twist the screw and then tighten the hex nut with a wrench to secure. These mufflers are more secure than those with a thumb screw.
Brass, bronze, and nylon mufflers offer good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Max. Flow Rate | Max. Pressure, psi | Max. Temp., °F | Ht. | For Use With | Removes Particle Size Down To, microns | Noise Reduction Rating, dB | Features | Each | |
Metric Male Nylon Plastic Fitting | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| M5 | 19 scfm @ 100 psi | 145 | 210° | 5/8" | Air, Inert Gas | 75 | 10-20 | Adjustable Airflow | 0000000 | 00000 |