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
Quick-Disconnect Tube Couplings for Chemicals
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 are polypropylene, which has excellent chemical, impact, and abrasion resistance.
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.
- For Use With: Ammonia, Ethanol, Phosphoric Acid (70%), Sodium Carbonate
- Temperature Range: 32° to 160° F
Barbed plugs insert into tubing and secure with a clamp.
Open Flow | With Shut-Off | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| For Tube ID | Coupling Size | Plug OD | Material | Color | Max. Pressure | Each | Each | ||
| 1/8" | 1/8 | 5/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 00000 | 00000000 | 000000 |
| 1/4" | 1/8 | 5/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 0000 | 00000000 | 00000 |
| 1/4" | 1/4 | 7/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 0000 | 00000000 | 00000 |
| 3/8" | 1/4 | 7/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 0000 | 00000000 | 00000 |
| 3/8" | 3/8 | 3/4" | Polypropylene Plastic | Gray | 60 psi @ 72° F | 00000000 | 00000 | 00000000 | 00000 |
| 1/2" | 3/8 | 3/4" | Polypropylene Plastic | Gray | 60 psi @ 72° F | 00000000 | 00000 | 00000000 | 00000 |
| 5/8" | 3/8 | 3/4" | Polypropylene Plastic | Gray | 60 psi @ 72° F | 00000000 | 0000 | 00000000 | 00000 |
| 3/4" | 3/8 | 3/4" | Polypropylene Plastic | Gray | 60 psi @ 72° F | 00000000 | 0000 | 0000000 | 00000 |
- For Use With: Ammonia, Ethanol, Phosphoric Acid (70%), Sodium Carbonate
- Temperature Range: 32° to 160° F
Barbed plugs insert into tubing and secure with a clamp.
Open Flow | With Shut-Off | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| For Tube ID | Coupling Size | Plug OD | Material | Color | Max. Pressure | Each | Each | ||
| 1/8" | 1/8 | 5/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 000000 | 00000000 | 000000 |
| 1/4" | 1/8 | 5/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 00000 | 00000000 | 00000 |
| 1/4" | 1/4 | 7/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 00000 | 00000000 | 00000 |
| 3/8" | 1/4 | 7/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | 00000000 | 00000 | 00000000 | 00000 |
| 3/8" | 3/8 | 3/4" | Polypropylene Plastic | Gray | 60 psi @ 72° F | 00000000 | 00000 | 00000000 | 00000 |
| 1/2" | 3/8 | 3/4" | Polypropylene Plastic | Gray | 60 psi @ 72° F | 00000000 | 00000 | 00000000 | 00000 |
- For Use With: Ammonia, Ethanol, Phosphoric Acid (70%), Sodium Carbonate
- Temperature Range: 32° to 160° F
Barbed sockets insert into tubing and secure with a clamp.
Open Flow | With Shut-Off | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Tube ID | Coupling Size | For Plug OD | Material | Color | Max. Pressure | Socket Locking Type | Each | Each | ||
| 1/8" | 1/8 | 5/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | Latch | 00000000 | 000000 | 00000000 | 000000 |
| 1/4" | 1/8 | 5/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | Latch | 00000000 | 00000 | 00000000 | 00000 |
| 1/4" | 1/4 | 7/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | Latch | 00000000 | 00000 | 00000000 | 00000 |
| 3/8" | 1/4 | 7/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | Latch | 00000000 | 00000 | 00000000 | 00000 |
| 3/8" | 3/8 | 3/4" | Polypropylene Plastic | Gray | 60 psi @ 72° F | Latch | 00000000 | 00000 | 00000000 | 00000 |
| 1/2" | 3/8 | 3/4" | Polypropylene Plastic | Gray | 60 psi @ 72° F | Latch | 00000000 | 00000 | 00000000 | 00000 |
| 5/8" | 3/8 | 3/4" | Polypropylene Plastic | Gray | 60 psi @ 72° F | Latch | 00000000 | 00000 | 00000000 | 00000 |
| 3/4" | 3/8 | 3/4" | Polypropylene Plastic | Gray | 60 psi @ 72° F | Latch | 00000000 | 00000 | 00000000 | 00000 |
- For Use With: Ammonia, Ethanol, Phosphoric Acid (70%), Sodium Carbonate
- Temperature Range: 32° to 160° F
Barbed sockets insert into tubing and secure with a clamp.
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 ID | Coupling Size | For Plug OD | Material | Color | Max. Pressure | For Hole Dia. | For Max. Wall Thick. | Socket Locking Type | Each | |
Open Flow | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1/8" | 1/8 | 5/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | 1/2" | 1/2" | Latch | 00000000 | 000000 |
| 1/4" | 1/4 | 7/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | 11/16" | 1/2" | Latch | 00000000 | 00000 |
| 3/8" | 1/4 | 7/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | 11/16" | 1/2" | Latch | 00000000 | 00000 |
| 3/8" | 3/8 | 3/4" | Polypropylene Plastic | Gray | 60 psi @ 72° F | 1 3/16" | 1/4" | Latch | 00000000 | 00000 |
| 1/2" | 3/8 | 3/4" | Polypropylene Plastic | Gray | 60 psi @ 72° F | 1 3/16" | 1/4" | Latch | 00000000 | 00000 |
With Shut-Off | ||||||||||
| 1/8" | 1/8 | 5/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | 1/2" | 1/2" | Latch | 00000000 | 00000 |
| 1/4" | 1/8 | 5/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | 1/2" | 1/2" | Latch | 00000000 | 00000 |
| 1/4" | 1/4 | 7/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | 11/16" | 1/2" | Latch | 00000000 | 00000 |
| 3/8" | 1/4 | 7/16" | Polypropylene Plastic | Beige | 120 psi @ 72° F | 11/16" | 1/2" | Latch | 00000000 | 00000 |
| 3/8" | 3/8 | 3/4" | Polypropylene Plastic | Gray | 60 psi @ 72° F | 1 3/16" | 1/4" | Latch | 00000000 | 00000 |
| 1/2" | 3/8 | 3/4" | Polypropylene Plastic | Gray | 60 psi @ 72° F | 1 3/16" | 1/4" | Latch | 00000000 | 00000 |
High-Flow Quick-Disconnect Tube Couplings for Chemicals
- For Use With: Acetic Acid (20%), Ammonia, Carbon Dioxide, Citric Acid, Diesel Fuel, Ethanol, Ethylene Glycol, Gasoline, Hydraulic Fluid (Petroleum Based), Hydrochloric Acid, Hydrogen Peroxide (30%), Kerosene, Methanol, Nitric Acid (20%), Potassium Hydroxide, Sodium Carbonate, Sodium Hydroxide (20%), Sulfuric Acid (75%), Synthetic Oil
- Temperature Range: 32° to 250° F
- Tubing: Use with soft or firm (Durometer 55A-95A) nylon plastic, polyethylene plastic, polypropylene plastic, polyurethane rubber, PVC plastic or TPE plastic
A spring-free flow path allows more chemicals to pass through these tube couplings at lower line pressures than other quick-disconnect couplings. This reduces turbulence, foaming, bubbles, and blockage. They have a shut-off valve that stops the flow when the coupling is disconnected, so chemicals won’t leak from your line. Unlike couplings with a button release, these have a safety slide to reduce accidental separation from bumps or drops. They are often used in laboratories, pharmaceutical facilities, and other sterile environments.
Made of PVDF, also known as Kynar, these couplings have excellent chemical and UV resistance at ambient and elevated temperatures. They also resist abrasion, impact, flames, and corrosion. Compared to other quick-disconnect couplings for chemicals, these couplings can withstand higher temperatures—all the way up to 250° F.
When you insert the plug into the socket, it’ll connect with a click. To disconnect, slide the latch on the socket and remove the plug.
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.
They have a single barb that grips onto tubing or hose and provides a smooth clamping surface for extra-tight connections that minimize leaks.
They have a single barb that grips onto tubing or hose and provides a smooth clamping surface for extra-tight connections that minimize leaks.