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International Standard ISO A Quick-Disconnect
Hose Couplings for Hydraulic Fluid
A complete coupling consists of a plug and a socket (both sold separately) that connect and disconnect quickly. Use them if you need frequent access to a hydraulic hose line. All of the International Standard ISO A quick-disconnect plugs are compatible with any of the International Standard ISO A quick-disconnect sockets of the same coupling size, regardless of the pipe size. Couplings meet ISO 7241-1 Series A dimensional and performance standards and are compatible with Aeroquip 5600 and Parker 6600 couplings. 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 is strong and durable with fair corrosion resistance.
Plugs are also known as nipples.
Sockets are sleeve-lock style. To connect, slide back the sleeve on the socket, insert the plug, and release the sleeve. To disconnect, slide back the sleeve and pull out the plug.
NPTF (Dryseal) threads are compatible with NPT 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.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: See table
- Maximum Vacuum: 27 in. of Hg @ 72° F
- Temperature Range: -40° to 250° F
- Compatible With: ISO 7241-1 Series A, Aeroquip 5600; ISO 7241-1 Series A, Parker 6600
- Specifications Met: ISO 7241-1 Series A
Plugs | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Plug Tip | Optional Dust Caps | ||||||||
| Coupling Size | Lg. | Dia. | Pipe Size | Dash Size | Max. Pressure | Each | Each | ||
Zinc-Plated Steel | |||||||||
| 1/4 | 1/4" | 7/16" | 1/8 | 02 | 5,000 psi @ 72° F | 00000000 | 000000 | 00000000 | 00000 |
| 1/4 | 1/4" | 7/16" | 1/4 | 04 | 5,000 psi @ 72° F | 00000000 | 00000 | 00000000 | 0000 |
| 3/8 | 3/8" | 11/16" | 3/8 | 06 | 4,000 psi @ 72° F | 00000000 | 00000 | 00000000 | 0000 |
| 1/2 | 3/8" | 13/16" | 1/2 | 08 | 4,000 psi @ 72° F | 00000000 | 00000 | 00000000 | 0000 |
| 3/4 | 5/8" | 1 1/8" | 3/4 | 12 | 4,000 psi @ 72° F | 00000000 | 00000 | 00000000 | 0000 |
| 1 | 13/16" | 1 3/8" | 1 | 16 | 4,000 psi @ 72° F | 00000000 | 00000 | 00000000 | 00000 |
- Maximum Pressure: See table
- Maximum Vacuum: 27 in. of Hg @ 72° F
- Temperature Range: -40° to 250° F
- Compatible With: ISO 7241-1 Series A, Aeroquip 5600; ISO 7241-1 Series A, Parker 6600
- Specifications Met: ISO 7241-1 Series A
Sockets | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
For Plug Tip | Optional Dust Plugs | |||||||||
| Coupling Size | Lg. | Dia. | Pipe Size | Dash Size | Back-Up Ring Material | Max. Pressure | Each | Each | ||
Zinc-Plated Steel | ||||||||||
| 1/4 | 1/4" | 7/16" | 1/8 | 02 | PTFE Plastic | 5,000 psi @ 72° F | 00000000 | 000000 | 00000000 | 00000 |
| 1/4 | 1/4" | 7/16" | 1/4 | 04 | PTFE Plastic | 5,000 psi @ 72° F | 00000000 | 00000 | 00000000 | 0000 |
| 3/8 | 3/8" | 11/16" | 3/8 | 06 | PTFE Plastic | 4,000 psi @ 72° F | 00000000 | 00000 | 00000000 | 0000 |
| 1/2 | 3/8" | 13/16" | 1/2 | 08 | PTFE Plastic | 4,000 psi @ 72° F | 00000000 | 00000 | 00000000 | 0000 |
| 3/4 | 5/8" | 1 1/8" | 3/4 | 12 | PTFE Plastic | 4,000 psi @ 72° F | 00000000 | 00000 | 00000000 | 0000 |
| 1 | 13/16" | 1 3/8" | 1 | 16 | PTFE Plastic | 4,000 psi @ 72° F | 00000000 | 000000 | 00000000 | 00000 |