Connection Style Connection Style |
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| Compression |
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| Quick Disconnect |
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| Threaded |
Quick-Disconnect Component Quick-DisconnectComponent |
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| Plug | Socket |
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| Plug and Socket Set |
Flow Control Flow Control |
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Material Material |
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For Tube Material For Tube Material |
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Maximum Pressure Maximum Pressure |
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Maximum Vacuum Maximum Vacuum |
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Nut Material Nut Material |
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Length Length |
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For Tube Hardness For Tube Hardness |
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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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Plastic Quick-Disconnect Tube Couplings for Air and Water
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.
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.
- Temperature Range: -40° to 180° F
- Tubing: Use with firm or hard (Durometer 85A-60D) nylon plastic or polyethylene plastic
Compression plugs and sockets have a sleeve (ferrule) that compresses the tubing and forms a seal when you tighten the nut.
- Temperature Range: -40° to 180° F
- Tubing: Use with firm or hard (Durometer 85A-60D) nylon plastic or polyethylene plastic
Compression plugs and sockets have a sleeve (ferrule) that compresses the tubing and forms a seal when you tighten the nut.
- Temperature Range: -40° to 180° F
- Tubing: Use with nylon plastic or polyethylene plastic, see table for hardness
Compression plugs and sockets have a sleeve (ferrule) that compresses the tubing and forms a seal when you tighten the nut.
For Tube | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Coupling Size | Plug OD | For Tube ID, mm | For Tube OD | Material | Color | Max. Pressure | Hardness Rating | Hardness | Each | |
Open Flow | ||||||||||
| 1/8 | 5/16" | __ | 5/32" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | 00000000 | 00000 |
| 1/8 | 5/16" | __ | 1/4" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | 0000000 | 0000 |
| 1/8 | 5/16" | __ | 3/8" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | 0000000 | 0000 |
| 1/8 | 5/16" | 2 | 4mm | Acetal Plastic | White | 100 psi @ 72° F | __ | __ | 00000000 | 0000 |
| 1/4 | 7/16" | __ | 1/4" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | 00000000 | 0000 |
| 1/4 | 7/16" | __ | 3/8" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | 0000000 | 0000 |
With Shut-Off | ||||||||||
| 1/8 | 5/16" | __ | 5/32" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | 00000000 | 00000 |
| 1/8 | 5/16" | __ | 1/4" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | 0000000 | 00000 |
| 1/8 | 5/16" | __ | 3/8" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | 0000000 | 00000 |
| 1/8 | 5/16" | 2 | 4mm | Acetal Plastic | White | 100 psi @ 72° F | __ | __ | 00000000 | 00000 |
| 1/4 | 7/16" | __ | 1/4" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | 00000000 | 00000 |
| 1/4 | 7/16" | __ | 3/8" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | 0000000 | 00000 |
- Temperature Range: -40° to 180° F
- Tubing: Use with firm or hard (Durometer 85A-60D) nylon plastic or polyethylene plastic
Compression plugs and sockets have a sleeve (ferrule) that compresses the tubing and forms a seal when you tighten the nut.
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.
| Coupling Size | Plug OD | For Tube OD | Material | Color | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Each | |
Open Flow | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1/8 | 5/16" | 1/4" | Acetal Plastic | White | 100 psi @ 72° F | 1/2" | 19/64" | 00000000 | 000000 |
| 1/4 | 7/16" | 1/4" | Acetal Plastic | White | 100 psi @ 72° F | 11/16" | 19/64" | 00000000 | 00000 |
| 1/4 | 7/16" | 3/8" | Acetal Plastic | White | 100 psi @ 72° F | 11/16" | 19/64" | 00000000 | 00000 |
With Shut-Off | |||||||||
| 1/8 | 5/16" | 1/4" | Acetal Plastic | White | 100 psi @ 72° F | 1/2" | 19/64" | 00000000 | 00000 |
| 1/4 | 7/16" | 1/4" | Acetal Plastic | White | 100 psi @ 72° F | 11/16" | 19/64" | 00000000 | 00000 |
| 1/4 | 7/16" | 3/8" | Acetal Plastic | White | 100 psi @ 72° F | 11/16" | 19/64" | 00000000 | 00000 |
- Temperature Range: -40° to 180° F
- Tubing: Use with nylon plastic or polyethylene plastic
Compression plugs and sockets have a sleeve (ferrule) that compresses the tubing and forms a seal when you tighten the nut.
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 |
- Temperature Range: -40° to 180° F
- Tubing: Use with nylon plastic or polyethylene plastic, see table for hardness
Compression plugs and sockets have a sleeve (ferrule) that compresses the tubing and forms a seal when you tighten the nut.
For Tube | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Coupling Size | For Plug OD | For Tube ID, mm | For Tube OD | Material | Color | Max. Pressure | Hardness Rating | Hardness | Socket Locking Type | Each | |
Open Flow | |||||||||||
| 1/8 | 5/16" | __ | 5/32" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | Latch | 00000000 | 000000 |
| 1/8 | 5/16" | __ | 1/4" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | Latch | 0000000 | 00000 |
| 1/8 | 5/16" | 2 | 4mm | Acetal Plastic | White | 100 psi @ 72° F | __ | __ | Latch | 00000000 | 00000 |
| 1/4 | 7/16" | __ | 1/4" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | Latch | 00000000 | 00000 |
| 1/4 | 7/16" | __ | 3/8" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | Latch | 0000000 | 00000 |
With Shut-Off | |||||||||||
| 1/8 | 5/16" | __ | 5/32" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | Latch | 00000000 | 00000 |
| 1/8 | 5/16" | __ | 1/4" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | Latch | 0000000 | 00000 |
| 1/8 | 5/16" | 2 | 4mm | Acetal Plastic | White | 100 psi @ 72° F | __ | __ | Latch | 00000000 | 00000 |
| 1/4 | 7/16" | __ | 1/4" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | Latch | 00000000 | 00000 |
| 1/4 | 7/16" | __ | 3/8" | Acetal Plastic | White | 100 psi @ 72° F | Firm, Hard | Durometer 85A-60D | Latch | 0000000 | 00000 |
- Temperature Range: -40° to 180° F
- Tubing: Use with firm or hard (Durometer 85A-60D) nylon plastic or polyethylene plastic
Compression plugs and sockets have a sleeve (ferrule) that compresses the tubing and forms a seal when you tighten the nut.
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.
| Coupling Size | For Plug OD | For Tube ID, mm | For Tube OD | Material | Color | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Socket Locking Type | Each | |
Open Flow | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/8 | 5/16" | __ | 5/32" | Acetal Plastic | White | 100 psi @ 72° F | 1/2" | 1/2" | Latch | 00000000 | 000000 |
| 1/8 | 5/16" | __ | 1/4" | Acetal Plastic | White | 100 psi @ 72° F | 1/2" | 1/2" | Latch | 0000000 | 00000 |
| 1/8 | 5/16" | 2 | 4mm | Acetal Plastic | White | 100 psi @ 72° F | 1/2" | 1/2" | Latch | 00000000 | 00000 |
| 1/4 | 7/16" | __ | 1/4" | Acetal Plastic | White | 100 psi @ 72° F | 11/16" | 1/2" | Latch | 00000000 | 00000 |
| 1/4 | 7/16" | __ | 3/8" | Acetal Plastic | White | 100 psi @ 72° F | 11/16" | 1/2" | Latch | 0000000 | 00000 |
With Shut-Off | |||||||||||
| 1/8 | 5/16" | __ | 5/32" | Acetal Plastic | White | 100 psi @ 72° F | 1/2" | 1/2" | Latch | 00000000 | 00000 |
| 1/8 | 5/16" | __ | 1/4" | Acetal Plastic | White | 100 psi @ 72° F | 1/2" | 1/2" | Latch | 0000000 | 00000 |
| 1/8 | 5/16" | 2 | 4mm | Acetal Plastic | White | 100 psi @ 72° F | 1/2" | 1/2" | Latch | 00000000 | 00000 |
| 1/4 | 7/16" | __ | 1/4" | Acetal Plastic | White | 100 psi @ 72° F | 11/16" | 1/2" | Latch | 00000000 | 00000 |
| 1/4 | 7/16" | __ | 3/8" | Acetal Plastic | White | 100 psi @ 72° F | 11/16" | 1/2" | Latch | 0000000 | 00000 |
Brass Quick-Disconnect Tube Couplings for Air
- Temperature Range: 0° to 180° F
- Tubing: Use with hard polyethylene plastic or polypropylene plastic
An all-brass body gives these quick-disconnect couplings better durability than plastic quick-disconnect couplings. They have a chrome plating for excellent protection in corrosive environments. Couplings consist of a plug and a socket that join with a latch, so you can easily connect and disconnect your line. To connect, insert the plug into the socket; to disconnect, press the latch and remove the plug.
Plugs and sockets with shut-off have a valve to stop the flow when the coupling is separated, so air won’t leak 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.
Compression plugs and sockets have a sleeve (ferrule) that compresses the tubing and forms a seal when you tighten the nut.
| Coupling Size | Plug OD | For Tube OD | Material | Max. Pressure | Each | |
Open Flow | ||||||
|---|---|---|---|---|---|---|
| 1/4 | 1/4" | 1/4" | Chrome-Plated Brass | 150 psi @ 72° F | 0000000 | 000000 |
| 3/8 | 3/8" | 3/8" | Chrome-Plated Brass | 150 psi @ 72° F | 0000000 | 00000 |
With Shut-Off | ||||||
| 1/4 | 1/4" | 1/4" | Chrome-Plated Brass | 150 psi @ 72° F | 0000000 | 00000 |
| 3/8 | 3/8" | 3/8" | Chrome-Plated Brass | 150 psi @ 72° F | 0000000 | 00000 |
Compression plugs and sockets have a sleeve (ferrule) that compresses the tubing and forms a seal when you tighten the nut.
Through-wall sockets are also known as bulkhead sockets and panel mount sockets; they mount through your wall or panel to create an inlet or outlet.
Compression plugs and sockets have a sleeve (ferrule) that compresses the tubing and forms a seal when you tighten the nut.
| For Tube OD | Pipe Size | Material | Max. Pressure | Each | |
Open Flow | |||||
|---|---|---|---|---|---|
NPT Threads | |||||
| 1/4" | 1/4 | Chrome-Plated Brass | 150 psi @ 72° F | 00000000 | 000000 |
| 1/4" | 1/8 | Chrome-Plated Brass | 150 psi @ 72° F | 00000000 | 00000 |
| 3/8" | 1/4 | Chrome-Plated Brass | 150 psi @ 72° F | 00000000 | 00000 |
With Shut-Off | |||||
NPT Threads | |||||
| 1/4" | 1/4 | Chrome-Plated Brass | 150 psi @ 72° F | 00000000 | 00000 |
| 1/4" | 1/8 | Chrome-Plated Brass | 150 psi @ 72° F | 00000000 | 00000 |
| 3/8" | 1/4 | Chrome-Plated Brass | 150 psi @ 72° F | 00000000 | 00000 |
Compression plugs and sockets have a sleeve (ferrule) that compresses the tubing and forms a seal when you tighten the nut.
Through-wall sockets are also known as bulkhead sockets and panel mount sockets; they mount through your wall or panel to create an inlet or outlet.
| For Tube OD | Material | Maximum Pressure | For Hole Dia. | For Max. Wall Thick. | Each | |
Open Flow | ||||||
|---|---|---|---|---|---|---|
| 1/4" | Chrome-Plated Brass | 150 psi @ 72° F | 1/2" | 27/32" | 00000000 | 000000 |
| 3/8" | Chrome-Plated Brass | 150 psi @ 72° F | 11/16" | 15/16" | 00000000 | 00000 |
With Shut-Off | ||||||
| 1/4" | Chrome-Plated Brass | 150 psi @ 72° F | 1/2" | 27/32" | 00000000 | 00000 |
| 3/8" | Chrome-Plated Brass | 150 psi @ 72° F | 11/16" | 15/16" | 00000000 | 00000 |
High-Pressure Quick-Disconnect Tube Couplings for Air
Not only do these chrome-plated brass couplings have excellent corrosion resistance, they also withstand pressures up to 250 psi. Couplings consist of a plug and a socket (sold separately) that join with a latch, so you can frequently connect and disconnect your line. To connect, insert the plug into the socket; to disconnect, press the latch on the socket and remove the plug.
Plugs and Sockets with shut-off have a valve to stop the flow when the coupling is separated, so air won’t leak 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.
- Temperature Range: -40° to 180° F
- Tubing: Use with firm or hard (Durometer 85A-60D) nylon plastic or polyethylene plastic
Compression plugs and sockets have a sleeve (ferrule) that compresses the tubing and forms a seal when you tighten the nut.
| Coupling Size | Plug OD | For Tube OD | Material | Max. Pressure | Each | |
Open Flow | ||||||
|---|---|---|---|---|---|---|
| 1/8 | 5/16" | 1/4" | Chrome-Plated Brass | 250 psi @ 72° F | 00000000 | 000000 |
| 1/4 | 7/16" | 1/4" | Chrome-Plated Brass | 250 psi @ 72° F | 00000000 | 00000 |
| 1/4 | 7/16" | 3/8" | Chrome-Plated Brass | 250 psi @ 72° F | 00000000 | 00000 |
With Shut-Off | ||||||
| 1/8 | 5/16" | 1/4" | Chrome-Plated Brass | 250 psi @ 72° F | 00000000 | 00000 |
| 1/4 | 7/16" | 1/4" | Chrome-Plated Brass | 250 psi @ 72° F | 00000000 | 00000 |
| 1/4 | 7/16" | 3/8" | Chrome-Plated Brass | 250 psi @ 72° F | 00000000 | 00000 |
- Temperature Range: -40° to 180° F
- Tubing: Use with firm or hard (Durometer 85A-60D) nylon plastic or polyethylene plastic
Compression plugs and sockets have a sleeve (ferrule) that compresses the tubing and forms a seal when you tighten the nut.
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.
| Coupling Size | Plug OD | For Tube OD | Material | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Each | |
Open Flow | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/8 | 5/16" | 1/4" | Chrome-Plated Brass | 250 psi @ 72° F | 1/2" | 19/64" | 00000000 | 000000 |
| 1/4 | 7/16" | 1/4" | Chrome-Plated Brass | 250 psi @ 72° F | 11/16" | 19/64" | 00000000 | 00000 |
| 1/4 | 7/16" | 3/8" | Chrome-Plated Brass | 250 psi @ 72° F | 11/16" | 19/64" | 00000000 | 00000 |
With Shut-Off | ||||||||
| 1/8 | 5/16" | 1/4" | Chrome-Plated Brass | 250 psi @ 72° F | 1/2" | 19/64" | 00000000 | 00000 |
| 1/4 | 7/16" | 1/4" | Chrome-Plated Brass | 250 psi @ 72° F | 11/16" | 19/64" | 00000000 | 00000 |
| 1/4 | 7/16" | 3/8" | Chrome-Plated Brass | 250 psi @ 72° F | 11/16" | 19/64" | 00000000 | 00000 |
- Temperature Range: -40° to 180° F
- Tubing: Use with firm or hard (Durometer 85A-60D) nylon plastic or polyethylene plastic
Compression plugs and sockets have a sleeve (ferrule) that compresses the tubing and forms a seal when you tighten the nut.
| Coupling Size | For Plug OD | For Tube OD | Material | Max. Pressure | Each | |
Open Flow | ||||||
|---|---|---|---|---|---|---|
| 1/8 | 5/16" | 1/4" | Chrome-Plated Brass | 250 psi @ 72° F | 00000000 | 000000 |
| 1/4 | 7/16" | 1/4" | Chrome-Plated Brass | 250 psi @ 72° F | 00000000 | 00000 |
| 1/4 | 7/16" | 3/8" | Chrome-Plated Brass | 250 psi @ 72° F | 00000000 | 00000 |
With Shut-Off | ||||||
| 1/8 | 5/16" | 1/4" | Chrome-Plated Brass | 250 psi @ 72° F | 00000000 | 00000 |
| 1/4 | 7/16" | 1/4" | Chrome-Plated Brass | 250 psi @ 72° F | 00000000 | 00000 |
| 1/4 | 7/16" | 3/8" | Chrome-Plated Brass | 250 psi @ 72° F | 00000000 | 00000 |
- Temperature Range: -40° to 180° F
- Tubing: Use with firm or hard (Durometer 85A-60D) nylon plastic or polyethylene plastic
Compression plugs and sockets have a sleeve (ferrule) that compresses the tubing and forms a seal when you tighten the nut.
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.
| Coupling Size | For Plug OD | For Tube OD | Material | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Each | |
Open Flow | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/8 | 5/16" | 5/32" | Chrome-Plated Brass | 250 psi @ 72° F | 1/2" | 1/2" | 00000000 | 000000 |
| 1/8 | 5/16" | 1/4" | Chrome-Plated Brass | 250 psi @ 72° F | 1/2" | 1/2" | 00000000 | 00000 |
| 1/4 | 7/16" | 1/4" | Chrome-Plated Brass | 250 psi @ 72° F | 11/16" | 1/2" | 00000000 | 00000 |
| 1/4 | 7/16" | 3/8" | Chrome-Plated Brass | 250 psi @ 72° F | 11/16" | 1/2" | 00000000 | 00000 |
With Shut-Off | ||||||||
| 1/8 | 5/16" | 5/32" | Chrome-Plated Brass | 250 psi @ 72° F | 1/2" | 1/2" | 00000000 | 00000 |
| 1/8 | 5/16" | 1/4" | Chrome-Plated Brass | 250 psi @ 72° F | 1/2" | 1/2" | 00000000 | 00000 |
| 1/4 | 7/16" | 1/4" | Chrome-Plated Brass | 250 psi @ 72° F | 11/16" | 1/2" | 00000000 | 00000 |
| 1/4 | 7/16" | 3/8" | Chrome-Plated Brass | 250 psi @ 72° F | 11/16" | 1/2" | 00000000 | 00000 |
Quick-Disconnect Tube Couplings for Food and Beverage
- Temperature Range:
Acetal Plastic: -40° to 180° F
Polypropylene Plastic: 32° to 160° F - Tubing:
Barbed Fittings: Use with soft or firm (Durometer 65A-80A) polyurethane rubber
Compression Fittings: Use with hard or firm (Durometer 80A-60D) nylon or polyethylene plastic - Specifications Met: NSF/ANSI 169
Couplings consist of a plug and a socket (sold separately) that join with a latch, so you can frequently connect and disconnect your line. To connect, insert the plug into the socket; to disconnect, press the latch on the socket and remove the plug. They’re made of FDA-approved materials, including moisture-resistant plastic that won’t absorb liquid and lose strength, even in high-humidity food and beverage applications.
Plugs and sockets with shut-off have a valve to stop the flow when the coupling is separated, so fluid 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.
Compression plugs have a sleeve (ferrule) that compresses the tubing and forms a seal when you tighten the nut.
Compression sockets have a sleeve (ferrule) that compresses the tubing and forms a seal when you tighten the nut.
Quick-Disconnect Couplings for Plastic Tubing—Gasoline
- Tempearture Range: 0° to 150° F
- Tubing: Use with firm (Durometer 45D) polyethylene or polypropylene plastic, except fittings with male threaded pipe connection
Couplings consist of a plug and a socket (sold separately) that join with a latch, so you can frequently connect and disconnect your line. To connect, insert the plug into the socket; to disconnect, press the latch and remove the plug. Plugs and sockets are 316 stainless steel for excellent corrosion resistance.
Plugs and sockets with shut-off have a valve to stop the flow when the coupling is separated, so gasoline 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.
Compression plugs have a sleeve (ferrule) that bites into the tubing and forms a seal when you tighten the nut.
| Coupling Size | Plug OD | For Tube OD | Material | Max. Pressure | Each | |
Open Flow | ||||||
|---|---|---|---|---|---|---|
| 1/4 | 1/4" | 1/4" | 316 Stainless Steel | 150 psi @ 72° F | 0000000 | 0000000 |
| 3/8 | 3/8" | 3/8" | 316 Stainless Steel | 150 psi @ 72° F | 0000000 | 000000 |
With Shut-Off | ||||||
| 1/4 | 1/4" | 1/4" | 316 Stainless Steel | 150 psi @ 72° F | 0000000 | 000000 |
| 3/8 | 3/8" | 3/8" | 316 Stainless Steel | 150 psi @ 72° F | 0000000 | 000000 |
Compression sockets have a sleeve (ferrule) that bites into the tubing and forms a seal when you tighten the nut.
Through-wall sockets are also known as bulkhead sockets and panel-mount sockets; they mount through your wall or panel to create an inlet or outlet.