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.
More
Low-Profile High-Pressure Quick-Disconnect Tube Couplings for Air
![](/prerenderstable/mvPRE/contents/gfx/imagecache/941/9414k62-9414k19c1-c01f-digital-master1557952805-p9@halfx_636935882182268109.png?ver=imagenotfound)
- Temperature Range: -30° to 250° F
- Tubing: Use with firm or soft (Durometer 35A-90A) Buna-N rubber, EVA plastic, gum rubber, latex rubber, neoprene rubber, polyurethane rubber, PVC plastic or silicone rubber, except for fittings with pipe end
With no latch, these couplings have a compact design to fit in small spaces. They connect with a push and disconnect with a pull, so you can easily access your line. Couplings consist of a plug and a socket (sold separately). They have a universal connection, so the plugs will connect to any of the sockets regardless of the pipe or tube size. They are nickel-plated brass for very good corrosion resistance.
Note: For a complete coupling, order a plug and a socket.
For technical drawings and 3-D models, click on a part number.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/941/9414k71p1-c01f-digitall@halfx_636935340391057046.png?ver=imagenotfound)
Open Flow | ||||
---|---|---|---|---|
Thread Size | Material | Max. Pressure | Each | |
UN/UNF (SAE Straight) Threads | ||||
10-32 | Nickel-Plated Brass | 700 psi @ 72° F | 0000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/941/9414k93p1-c01f-digitall@halfx_636935361952627107.png?ver=imagenotfound)
Through-wall plugs and sockets are also known as bulkhead and panel-mount plugs and sockets; they mount through your wall or panel to create an inlet or outlet.
Open Flow | ||||||
---|---|---|---|---|---|---|
For Tube ID | Material | Max. Pressure | For Hole Dia. Range | For Max. Wall Thick. | Each | |
3/32" | Nickel-Plated Brass | 700 psi @ 72° F | 1/4"-5/16" | 5/32" | 0000000 | 00000 |
1/8" | Nickel-Plated Brass | 700 psi @ 72° F | 5/16"-3/8" | 7/32" | 0000000 | 0000 |
5/32" | Nickel-Plated Brass | 700 psi @ 72° F | 5/16"-3/8" | 7/32" | 0000000 | 0000 |
3/16" | Nickel-Plated Brass | 700 psi @ 72° F | 1/4"-5/16" | 5/32" | 0000000 | 0000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/941/9414k19p1-c01f-digitall@halfx_636935341379895961.png?ver=imagenotfound)
Sockets with shut-off have a valve to stop the flow when the coupling is separated, so air won’t leak from your line.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/941/9414k36p1-c01f-digitall@halfx_636935353112951314.png?ver=imagenotfound)
Sockets with shut-off have a valve to stop the flow when the coupling is separated, so air won’t leak from your line.
Barbed plugs and sockets insert into tubing and secure with a clamp.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/941/9414k53p1-c01f-digitall@halfx_636935334847240701.png?ver=imagenotfound)
Sockets with shut-off have a valve to stop the flow when the coupling is separated, so air won’t leak from your line.
Through-wall plugs and sockets are also known as bulkhead and panel-mount plugs and sockets; they mount through your wall or panel to create an inlet or outlet.
Open Flow | With Shut-Off | |||||||
---|---|---|---|---|---|---|---|---|
For Tube ID | Material | Max. Pressure | For Hole Dia. Range | For Max. Wall Thick. | Each | Each | ||
3/32" | Nickel-Plated Brass | 700 psi @ 72° F | 1/4"-5/16" | 5/32" | 0000000 | 000000 | 0000000 | 000000 |
1/8" | Nickel-Plated Brass | 700 psi @ 72° F | 5/16"-3/8" | 7/32" | 0000000 | 00000 | 0000000 | 00000 |
5/32" | Nickel-Plated Brass | 700 psi @ 72° F | 5/16"-3/8" | 7/32" | 0000000 | 00000 | 0000000 | 00000 |
3/16" | Nickel-Plated Brass | 700 psi @ 72° F | 1/4"-5/16" | 5/32" | 0000000 | 00000 | 0000000 | 00000 |
Plastic Quick-Disconnect Tube Couplings for Air and Water
![](/prerenderstable/mvPRE/contents/gfx/imagecache/501/5012k88-k76c1-c01f-digital-master1557778869-p9@halfx_636933712070727115.png?ver=imagenotfound)
Lighter in weight than their metal counterparts, these quick-disconnect couplings are plastic. They consist of a plug and a socket that allow you to frequently connect and disconnect your line.
Latch-lock sockets disconnect by pressing the latch.
Twist-lock sockets connect and disconnect with a twist and do not have a latch.
Acetal plugs and sockets are moisture resistant, so they won’t absorb water and lose strength, even in high-humidity environments. Plug and Sockets with shut-off have a valve to stop the flow when the coupling is separated, so air or water won’t spill from your line.
Note: For a complete coupling, order a plug and a socket with the same coupling size.
For technical drawings and 3-D models, click on a part number.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/501/5012k711p1-c01f-digitall@halfx_636933796011005619.png?ver=imagenotfound)
- Temperature Range: -40° to 180° F
- Tubing: Use with soft or firm (Durometer 70A-85A) polyurethane rubber
Barbed plugs and sockets insert into tubing. Those with collar do not require a clamp and limit the size of the tubing to a maximum of 1/8” OD.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/501/5012k94p1-c01f-digitall@halfx_636933956686496732.png?ver=imagenotfound)
- Temperature Range: -40° to 180° F
- Tubing: Use with soft or firm (Durometer 70A-85A) polyurethane rubber
Barbed plugs and sockets insert into tubing. Those with collar do not require a clamp and limit the size of the tubing to a maximum of 1/8” OD.
Through-wall plugs and sockets are also known as bulkhead and panel-mount plugs and sockets; they mount through your wall or panel to create an inlet or outlet.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/501/5012k737multipositive_front_positive_right_standard15_1599144038_899@halfx_637347229076543105.png?ver=imagenotfound)
- Temperature Range: -40° to 180° F
- Tubing: Use with nylon plastic or polyethylene plastic
Open Flow | ||||||||
---|---|---|---|---|---|---|---|---|
Coupling Size | Plug OD | For Tube ID, mm | For Tube OD | Material | Color | Max. Pressure | Each | |
1/8 | 5/16" | 2.5 | 4mm | Acetal Plastic | White | 100 psi @ 72° F | 00000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/501/5012k81p1-c01f-digitall@halfx_636933968419783042.png?ver=imagenotfound)
- Temperature Range: -40° to 180° F
- Tubing: Use with nylon plastic or polyethylene plastic, see table for hardness
![](/prerenderstable/mvPRE/contents/gfx/imagecache/501/5012k77p1-c01f-digitall@halfx_636933984447727494.png?ver=imagenotfound)
- Temperature Range: -40° to 180° F
- Tubing: Use with firm or hard (Durometer 85A-60D) nylon plastic or polyethylene plastic
Through-wall plugs and sockets are also known as bulkhead and panel-mount plugs and sockets; they mount through your wall or panel to create an inlet or outlet.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/501/5012k76p1-c01f-digitall@halfx_636933990249381972.png?ver=imagenotfound)
- Temperature Range: -40° to 180° F; Polypropylene Plastic Fittings are 32° to 160° F