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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Grip-Lock Hose Couplings for Air
Also known as Bowes couplings, these consist of a plug and a socket (both sold separately) that connect with a quarter twist. They can handle higher-pressures than twist-claw couplings, and have a lower profile to fit in cramped spaces. All of the grip-lock plugs are compatible with any of the grip-lock sockets, regardless of the pipe size or barbed hose ID.
Plugs have a spring-loaded locking sleeve to prevent accidental disconnection. The sleeve automatically locks into place when you connect the coupling. To disconnect, slide the locking sleeve back and twist the coupling apart.
Plugs and sockets with a barbed end insert into plastic or rubber hose and secure with a clamp.
Brass plugs and sockets are softer than other metal plugs and sockets, so they’re easier to thread together. They have good corrosion resistance. NPTF (Dryseal) threads are compatible with NPT threads.
Warning: There is no valve in these couplings. Stop the flow of air before you disconnect the line.
- Maximum Pressure: See table
- Maximum Vacuum: See table
- Temperature Range: See table
- Specifications Met: MIL-A-A-50431A, MIL-C-3486B
- Compatible With: Dixon Dix Lock Couplings, Perfecting N Couplings
| Pipe Size | Thread Type | Max. Pressure | Max. Vacuum | Temperature Range, °F | Each | |
Brass | ||||||
|---|---|---|---|---|---|---|
| 3/8 | NPTF | 300 psi @ 72° F | Not Rated | -20° to 175° | 0000000 | 000000 |
| 1/2 | NPTF | 300 psi @ 72° F | Not Rated | -20° to 175° | 0000000 | 00000 |
| 1/2 | BSPT | 300 psi @ 72° F | Not Rated | -40° to 250° | 0000000 | 00000 |
| 3/4 | NPTF | 300 psi @ 72° F | Not Rated | -20° to 175° | 0000000 | 00000 |
| 3/4 | BSPT | 300 psi @ 72° F | Not Rated | -40° to 250° | 0000000 | 00000 |
| 1 | BSPT | 300 psi @ 72° F | Not Rated | -40° to 250° | 0000000 | 00000 |
- Maximum Pressure: See table
- Maximum Vacuum: See table
- Temperature Range: See table
- Specifications Met: MIL-A-A-50431A, MIL-C-3486B
- Compatible With: Dixon Dix Lock Couplings, Perfecting N Couplings
| Pipe Size | Thread Type | Max. Pressure | Max. Vacuum | Temperature Range, °F | Each | |
Brass | ||||||
|---|---|---|---|---|---|---|
| 3/8 | NPTF | 300 psi @ 72° F | Not Rated | -20° to 175° | 0000000 | 000000 |
| 1/2 | NPTF | 300 psi @ 72° F | Not Rated | -20° to 175° | 0000000 | 00000 |
| 1/2 | BSPP | 300 psi @ 72° F | Not Rated | -40° to 250° | 0000000 | 00000 |
| 3/4 | NPTF | 300 psi @ 72° F | Not Rated | -20° to 175° | 0000000 | 00000 |
| 3/4 | BSPP | 300 psi @ 72° F | Not Rated | -40° to 250° | 0000000 | 00000 |
| 1 | BSPP | 300 psi @ 72° F | Not Rated | -40° to 250° | 0000000 | 00000 |
- Maximum Pressure: 300 psi @ 72° F
- Maximum Vacuum: See table
- Temperature Range: See table
- Attachment Type: Use Band-and-Buckle Clamps
- Specifications Met: MIL-A-A-50431A, MIL-C-3486B
- Compatible With: Dixon Dix Lock Couplings, Perfecting N Couplings
- Maximum Pressure: See table
- Maximum Vacuum: See table
- Temperature Range: See table
- Specifications Met: MIL-A-A-50431A, MIL-C-3486B
- Compatible With: Dixon Dix Lock Couplings, Perfecting N Couplings
| Pipe Size | Thread Type | Max. Pressure | Max. Vacuum | Temperature Range, °F | Each | |
Brass | ||||||
|---|---|---|---|---|---|---|
| 3/8 | NPTF | 300 psi @ 72° F | Not Rated | -20° to 175° | 0000000 | 000000 |
| 1/2 | NPTF | 300 psi @ 72° F | Not Rated | -20° to 175° | 0000000 | 00000 |
| 1/2 | BSPT | 300 psi @ 72° F | Not Rated | -40° to 250° | 0000000 | 00000 |
| 3/4 | NPTF | 300 psi @ 72° F | Not Rated | -20° to 175° | 0000000 | 00000 |
| 3/4 | BSPT | 300 psi @ 72° F | Not Rated | -40° to 250° | 0000000 | 00000 |
| 1 | BSPT | 300 psi @ 72° F | Not Rated | -40° to 250° | 0000000 | 00000 |
| Replacement Gaskets (10/Pkg.) | 0000000 | Pkg. | 000000 |
- Maximum Pressure: See table
- Maximum Vacuum: See table
- Temperature Range: See table
- Specifications Met: MIL-A-A-50431A, MIL-C-3486B
- Compatible With: Dixon Dix Lock Coupling, Perfecting N Coupling
| Pipe Size | Thread Type | Max. Pressure | Max. Vacuum | Temperature Range, °F | Each | |
Brass | ||||||
|---|---|---|---|---|---|---|
| 3/8 | NPTF | 300 psi @ 72° F | Not Rated | -20° to 175° | 0000000 | 000000 |
| 1/2 | NPTF | 300 psi @ 72° F | Not Rated | -20° to 175° | 0000000 | 00000 |
| 1/2 | BSPP | 300 psi @ 72° F | Not Rated | -40° to 250° | 0000000 | 00000 |
| 3/4 | NPTF | 300 psi @ 72° F | Not Rated | -20° to 175° | 0000000 | 00000 |
| 3/4 | BSPP | 300 psi @ 72° F | Not Rated | -40° to 250° | 0000000 | 00000 |
| 1 | BSPP | 300 psi @ 72° F | Not Rated | -40° to 250° | 0000000 | 00000 |
| Replacement Gaskets (10/Pkg.) | 0000000 | Pkg. | 000000 |
- Maximum Pressure: 300 psi @ 72° F
- Maximum Vacuum: See table
- Temperature Range: See table
- Attachment Type: Use Band-and-Buckle Clamps
- Specifications Met: MIL-A-A-50431A, MIL-C-3486B
- Compatible With: Dixon Dix Lock Couplings, Perfecting N Couplings