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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Industrial Quick-Disconnect Hose Couplings for Air
A complete coupling consists of a plug and a socket (both sold separately or in a set) that connect and disconnect quickly. Use them if you need frequent access to a line. They are also known as industrial interchange couplings. All Industrial plugs are compatible with any of the Industrial sockets of the same coupling size, regardless of the pipe size or barbed hose ID.
Steel is stronger and more durable than other metals. Zinc-plated steel has fair corrosion resistance and should be used primarily in dry environments. Aluminum is lighter in weight than other metals and has good corrosion resistance. Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size.
- Maximum Pressure: 230 psi @ 72° F
- Temperature Range: 0° to 212° F
Sockets have a shut-off valve that stops the flow when the coupling is separated, so air won’t leak from the line.
Manifolds distribute air to multiple lines.
Push-to-connect sockets join by forcefully pushing the plug and socket together until you hear a click. Unlike sleeve-lock sockets, you should not slide back the sleeve to connect. To disconnect, slide the sleeve on the socket forward until the plug ejects.
For Plug Tip | |||||||
|---|---|---|---|---|---|---|---|
| Coupling Size | Lg. | Dia. | Pipe Size | Thread Material | Number of Mounting Holes | Each | |
Zinc-Plated Steel | |||||||
| 1/4 | 3/16" | 5/16" | 1/2 | Zinc-Plated Steel | 4 | 0000000 | 000000 |
- Maximum Pressure: 230 psi @ 72° F
- Temperature Range: 0° to 212° F
Sockets have a shut-off valve that stops the flow when the coupling is separated, so air won’t leak from the line.
Manifolds distribute air to multiple lines.
Push-to-connect sockets join by forcefully pushing the plug and socket together until you hear a click. Unlike sleeve-lock sockets, you should not slide back the sleeve to connect. To disconnect, slide the sleeve on the socket forward until the plug ejects.
For Plug Tip | |||||||
|---|---|---|---|---|---|---|---|
| Coupling Size | Lg. | Dia. | Pipe Size | Thread Material | Number of Mounting Holes | Each | |
Zinc-Plated Steel | |||||||
| 1/4 | 3/16" | 5/16" | 1/2 | Zinc-Plated Steel | 4 | 0000000 | 0000000 |
- Maximum Pressure: 300 psi @ 72° F
- Temperature Range: -40° to 225° F
- Specifications Met: Fed. Spec. A-A-59439, ISO 6150/B
Sockets have a shut-off valve that stops the flow when the coupling is separated, so air won’t leak from the line.
Manifolds distribute air to multiple lines.
Push-to-connect sockets join by forcefully pushing the plug and socket together until you hear a click. Unlike sleeve-lock sockets, you should not slide back the sleeve to connect. To disconnect, slide the sleeve on the socket forward until the plug ejects.
For Plug Tip | ||||||
|---|---|---|---|---|---|---|
| Coupling Size | Lg. | Dia. | Pipe Size | Thread Material | Each | |
Aluminum | ||||||
| 1/4 | 3/16" | 5/16" | 1/4 | Brass | 0000000 | 0000000 |
- Maximum Pressure: 230 psi @ 72° F
- Temperature Range: 0° to 212° F
Sockets have a shut-off valve that stops the flow when the coupling is separated, so air won’t leak from the line.
Manifolds distribute air to multiple lines.
Push-to-connect sockets join by forcefully pushing the plug and socket together until you hear a click. Unlike sleeve-lock sockets, you should not slide back the sleeve to connect. To disconnect, slide the sleeve on the socket forward until the plug ejects.
For Plug Tip | |||||||
|---|---|---|---|---|---|---|---|
| Coupling Size | Lg. | Dia. | Pipe Size | Thread Material | Number of Mounting Holes | Each | |
Zinc-Plated Steel | |||||||
| 1/4 | 3/16" | 5/16" | 1/2 | Zinc-Plated Steel | 4 | 0000000 | 0000000 |
- Maximum Pressure: 300 psi @ 72° F
- Temperature Range: -40° to 225° F
- Specifications Met: Fed. Spec. A-A-59439, ISO 6150/B
Sockets have a shut-off valve that stops the flow when the coupling is separated, so air won’t leak from the line.
Manifolds distribute air to multiple lines
Push-to-connect sockets join by forcefully pushing the plug and socket together until you hear a click. Unlike sleeve-lock sockets, you should not slide back the sleeve to connect. To disconnect, slide the sleeve on the socket forward until the plug ejects.
For Plug Tip | ||||||
|---|---|---|---|---|---|---|
| Coupling Size | Lg. | Dia. | Pipe Size | Thread Material | Each | |
Aluminum | ||||||
| 1/4 | 3/16" | 5/16" | 3/8 | Brass | 0000000 | 0000000 |
- Maximum Pressure: 230 psi @ 72° F
- Temperature Range: 0° to 212° F
Sockets have a shut-off valve that stops the flow when the coupling is separated, so air won’t leak from the line.
Manifolds distribute air to multiple lines.
Push-to-connect sockets join by forcefully pushing the plug and socket together until you hear a click. Unlike sleeve-lock sockets, you should not slide back the sleeve to connect. To disconnect, slide the sleeve on the socket forward until the plug ejects.
For Plug Tip | |||||||
|---|---|---|---|---|---|---|---|
| Coupling Size | Lg. | Dia. | Pipe Size | Thread Material | Number of Mounting Holes | Each | |
Zinc-Plated Steel | |||||||
| 1/4 | 3/16" | 5/16" | 1/2 | Zinc-Plated Steel | 4 | 0000000 | 0000000 |
ARO Quick-Disconnect Hose Couplings for Air
A complete coupling consists of a plug and a socket (both sold separately or in a set) that connect and disconnect quickly. Use them if you need frequent access to a line. All ARO plugs are compatible with any of the ARO sockets of the same coupling size, regardless of the pipe size or barbed hose ID.
Sockets have a shut-off valve that stops the flow when the coupling is separated, so air won’t leak from the line.
Push-to-connect sockets are easier to connect than sleeve-lock sockets. Connect by pushing the plug into the socket until you hear a click. To disconnect, slide the sleeve on the socket forward until the plug ejects.
Manifolds give you a centralized and mounted location for plugging in your air tool line.
Steel is stronger and more durable than other metals. Zinc-plated steel has fair corrosion resistance and should be used primarily in dry environments.Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size.
- Maximum Pressure: 230 psi @ 72° F
- Maximum Vacuum: Not Rated
- Temperature Range: 0° to 212° F
Number Of | For Plug Tip | |||||||
|---|---|---|---|---|---|---|---|---|
| Inlets | Outlets | Coupling Size | Lg. | Dia. | Pipe Size | Thread Type | Each | |
Zinc-Plated Steel | ||||||||
| 1 | 4 | 1/4 | 5/16" | 5/16" | 1/2 | BSPP | 0000000 | 0000000 |
Universal Quick-Disconnect Hose Sockets for Air
Sockets accommodate five common plug shapes: Industrial, ARO, Lincoln, Tru-Flate, and European. Use them with a plug of the same coupling size to frequently connect and disconnect your line. 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. Sockets have a shut-off valve that stops the flow when the coupling is separated, so air won’t leak from the line.
Manifolds distribute air to multiple lines. They're aluminum to resist corrosion. Four-outlet manifolds have two inlets. You can close off one of the inlets with the included brass pipe plug.
Brass sockets have good corrosion resistance.
- Maximum Pressure: 300 psi @ 72° F
- Temperature Range: -40° to 250° F
For Plug Tip | |||||
|---|---|---|---|---|---|
| Coupling Size | Lg. | Dia. | Pipe Size | Each | |
Aluminum with Brass Socket | |||||
| 1/4 | 3/16" | 5/16" | 1/4 | 00000000 | 000000 |
- Maximum Pressure: 300 psi @ 72° F
- Temperature Range: -40° to 250° F
For Plug Tip | ||||||
|---|---|---|---|---|---|---|
| Coupling Size | Lg. | Dia. | Pipe Size | Includes | Each | |
Aluminum with Brass Socket | ||||||
| 1/4 | 3/16" | 5/16" | 3/8 | 3/8 NPT Brass Hex Plug | 00000000 | 0000000 |
Compressed Air Regulating Manifolds for Air-Powered Tools
Run up to four air-powered tools from a single air supply. Two outlets deliver air at the same pressure as the air supply, and two outlets share a regulator so you can turn the knob to adjust the pressure within the range. The pressure gauge indicates air pressure at the regulated outlets.
Overall | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Inlet Tube ID | Outlet Coupling Size (No. of Outlets) | Outlet Coupling Type | Max. Flow Rate | Max. Pressure, psi | Gauge Included | Lg. | Wd. | Ht. | Max. Temp., °F | Regulating Accuracy | Pressure Regulating Range, psi | Each | |
Zinc Housing | |||||||||||||
Plug-In Male Inlet × Push-to-Connect Female Outlet | |||||||||||||
| 3/8" | 1/4 (2 Unregulated, 2 Regulated) | ARO Quick-Disconnect, Industrial Quick-Disconnect | 20 scfm @ 100 psi | 200 | Yes | 12 1/2" | 7" | 4" | 120° | ±3% | 0-150 | 0000000 | 000000 |
Manifolds for Supplied-Air Respirators for Plant Air Lines
Divert compressed air from a single line to two respirators. Often used in plants with limited air sources, these manifolds allow two workers to share the same line. Shaped like a briefcase, they’re easy to tote around your facility—use them up to 300 ft. from an air source. The case is polypropylene, so it’s durable enough to hold up to wear and tear.
Overall | Pressure Regulating Max., psi | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inlet Coupling Size | Outlet Coupling Size (No. of Outlets) | Max. Flow Rate, cfm | Max. Pressure, psi | Gauge Included | Wd. | Ht. | Max. Temp., °F | Regulating Accuracy, psi | Inlet | Outlet | Each | |
Aluminum Housing | ||||||||||||
Quick-Disconnect Male Inlet and Female Outlets | ||||||||||||
| 1/2 | 1/4 (2 Regulated) | 100 | 125 | Yes | 19" | 13" | 140° | ±0.1 | 150 | 125 | 0000000 | 0000000 |