How to Identify and Measure 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.
Nylon has good corrosion resistance, is nonmarring, and won’t scratch delicate surfaces. Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size.
- Maximum Pressure: 175 psi @ 72° F
- Temperature Range: 5° to 160° F
- Specifications Met: 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.
Push-button sockets are the easiest to connect and disconnect. Push the plug into the socket until you hear a click. To disconnect, push the button on the socket and the plug will eject. Safety push-button sockets release the compressed air prior to ejecting the plug to reduce hose whip.
- Maximum Pressure: 175 psi @ 72° F
- Temperature Range: 5° to 160° F
- Specifications Met: 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.
Push-button sockets are the easiest to connect and disconnect. Push the plug into the socket until you hear a click. To disconnect, push the button on the socket and the plug will eject. Safety push-button sockets release the compressed air prior to ejecting the plug to reduce hose whip.
For Plug Tip | Push-Button | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Coupling Size | Lg. | Dia. | Pipe Size | Thread Material | Color | Material | Color | Each | |
Nylon Plastic | |||||||||
| 1/4 | 3/16" | 5/16" | 1/4 | Steel | Black | Plastic | Blue | 0000000 | 000000 |
| 1/4 | 3/16" | 5/16" | 3/8 | Steel | Black | Plastic | Blue | 0000000 | 00000 |
| 3/8 | 5/16" | 7/16" | 1/4 | Steel | Black | Plastic | Blue | 0000000 | 00000 |
| 3/8 | 5/16" | 7/16" | 3/8 | Steel | Black | Plastic | Blue | 0000000 | 00000 |
| 3/8 | 5/16" | 7/16" | 1/2 | Steel | Black | Plastic | Blue | 0000000 | 00000 |
Plastic Cam-and-Groove Hose Couplings for Water
Made of polypropylene, these couplings are lighter in weight than metal cam-and-groove couplings and have good abrasion and corrosion resistance. A complete coupling consists of a plug and a socket (both sold separately) that allow you to quickly connect and disconnect medium-to large-diameter hose lines. To connect, insert the plug into the socket and press the levers down. The levers fit snugly into the groove on the plug’s body and force the plug against the gasket to form a tight seal. To disconnect, lift both levers and pull out the plug.
Sockets with locking levers prevent accidental disconnection. The locking pins engage automatically when the coupling is connected. Press the locking pins simultaneously to disengage.
Sockets with male threaded end are also known as B couplers.
Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size.
Warning: Relieve all pressure before disconnecting the couplings. Do not use cam-and-groove couplings with compressed air or gas.
- Maximum Pressure: See table
- Temperature Range: -20° to 150° F
- Specifications Met: Fed. Spec. A-A-59326
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.
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.
UN/UNF (SAE Straight) threads are also known as O-ring boss threads.
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.
- 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
- 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
Sockets | ||||||||
|---|---|---|---|---|---|---|---|---|
For Plug Tip | Optional Dust Plugs | |||||||
| Coupling Size | Lg. | Dia. | Pipe Size | Max. Pressure | Each | Each | ||
Zinc-Plated Steel | ||||||||
| 1/4 | 1/4" | 5/8" | 1/4 | 7,200 psi @ 72° F | 0000000 | 000000 | 0000000 | 00000 |
| 3/8 | 3/16" | 3/4" | 3/8 | 5,800 psi @ 72° F | 0000000 | 00000 | 0000000 | 0000 |
| 1/2 | 3/8" | 15/16" | 1/2 | 5,800 psi @ 72° F | 0000000 | 00000 | 0000000 | 0000 |
| 3/4 | 7/16" | 1 3/16" | 3/4 | 5,800 psi @ 72° F | 0000000 | 000000 | 0000000 | 0000 |
| 1 | 7/16" | 1 7/16" | 1 | 5,000 psi @ 72° F | 0000000 | 000000 | 0000000 | 00000 |
- 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