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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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Easy-View Plastic Barbed Tube Fittings for Air and Water
- Temperature Range: -210° to 270° F
- Tubing: Use with firm or soft (Durometer 45A-90A) polyurethane rubber or PVC plastic
Monitor flow with these clear fittings. They have a single barb that creates a smooth clamping surface for extra-tight connections that minimize leaks. Fittings are polycarbonate for excellent impact resistance.
For technical drawings and 3-D models, click on a part number.
Straight Adapters, Tube × Male Threaded Pipe
| For Tube ID | Pipe Size  | Thread Size | Material | Color | Max. Pressure | Pkg. Qty. | Pkg. | |
NPT Threads | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/16" | 1/16 | __ | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 000000 |
| 1/16" | 1/8 | __ | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 3/32" | 1/16 | __ | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 3/32" | 1/8 | __ | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/8" | 1/16 | __ | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/8" | 1/8 | __ | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 5/32" | 1/16 | __ | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 5/32" | 1/8 | __ | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 3/16" | 1/16 | __ | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 3/16" | 1/8 | __ | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/4" | 1/8 | __ | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
UN/UNF (SAE Straight) Threads | ||||||||
| 1/16" | __ | 10-32 | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 3/32" | __ | 10-32 | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/8" | __ | 10-32 | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 5/32" | __ | 10-32 | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
Straight Connectors, Tube
| For Tube ID | Material | Color | Max. Pressure | Pkg. Qty. | Pkg. | |
| 1/16" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 3/32" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 0000 |
| 1/8" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 0000 |
| 5/32" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 0000 |
| 3/16" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 0000 |
| 1/4" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 0000 |
Straight Reducers, Tube
| For Tube ID (A) | For Tube ID (B) | Material | Color | Max. Pressure | Pkg. Qty. | Pkg. | |
| 3/32" | 1/16" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 000000 |
| 1/8" | 1/16" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/8" | 3/32" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 5/32" | 1/16" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 5/32" | 3/32" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 5/32" | 1/8" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 3/16" | 1/16" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 3/16" | 3/32" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 3/16" | 1/8" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 3/16" | 5/32" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/4" | 1/8" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/4" | 5/32" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/4" | 3/16" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
90° Elbow Connectors, Tube
| For Tube ID | Material | Color | Max. Pressure | Pkg. Qty. | Pkg. | |
| 1/16" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 000000 |
| 3/32" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/8" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 5/32" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 3/16" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/4" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
Tee Connectors, Tube
| For Tube ID | Material | Color | Max. Pressure | Pkg. Qty. | Pkg. | |
| 1/16" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 000000 |
| 3/32" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/8" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 5/32" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 3/16" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/4" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
Inline Tee Reducers, Tube
Inline tees are also known as branch tees.
| For Tube ID (A) | For Tube ID (B) | Material | Color | Max. Pressure | Pkg. Qty. | Pkg. | |
| 1/16" | 1/8" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 000000 |
| 1/8" | 1/16" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/8" | 3/32" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/8" | 5/32" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/8" | 3/16" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/8" | 1/4" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 5/32" | 1/8" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 5/32" | 3/16" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 5/32" | 1/4" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 3/16" | 1/8" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/4" | 3/32" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/4" | 1/8" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
Wye Connectors, Tube
| For Tube ID | Material | Color | Max. Pressure | Pkg. Qty. | Pkg. | |
| 1/16" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 000000 |
| 3/32" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/8" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 5/32" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 3/16" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
| 1/4" | Polycarbonate Plastic | Clear | 125 psi @ 72° F | 10 | 0000000 | 00000 |
Plastic Quick-Turn Tube Couplings for Air and Water
- For Use With: Polycarbonate Plastic: Air
Nylon Plastic: Air, Water
Polypropylene Plastic: Water - Temperature Range: Nylon Plastic, Polycarbonate Plastic: -20° to 200° F
Polypropylene Plastic: 35° to 150° F - Tubing: Use with soft (Durometer 40A-65A) PVC plastic or silicone rubber
Made of plastic, these couplings are lighter in weight than metal quick-turn couplings. Also known as luer lock couplings, they consist of a plug and socket (sold separately) that connect with a half turn. They have a compact body for easy installation in tight spaces. Plugs and sockets are open-flow style, so there is no shut-off valve to stop the flow when the coupling is separated. They have a universal connection, so the plugs will connect to any of the sockets, regardless of the pipe or tube size.
Polycarbonate plugs and sockets are clear so you can monitor your line. Note: For a complete coupling, order a plug and a socket.
For technical drawings and 3-D models, click on a part number.
Straight Plugs, Barbed Tube
Barbed plugs and sockets insert into tubing and secure with a clamp.
| For Tube ID | Material | Color | Clarity | Max. Pressure | Pkg. Qty. | Pkg. | |
| 1/16" | Polycarbonate Plastic | Clear | Clear | 40 psi @ 72° F | 10 | 000000000 | 00000 |
| 3/32" | Polycarbonate Plastic | Clear | Clear | 40 psi @ 72° F | 10 | 000000000 | 0000 |
| 1/8" | Polycarbonate Plastic | Clear | Clear | 40 psi @ 72° F | 10 | 000000000 | 0000 |
| 5/32" | Polycarbonate Plastic | Clear | Clear | 40 psi @ 72° F | 10 | 000000000 | 0000 |
| 3/16" | Polycarbonate Plastic | Clear | Clear | 40 psi @ 72° F | 10 | 000000000 | 0000 |
| 1/4" | Polycarbonate Plastic | Clear | Clear | 40 psi @ 72° F | 10 | 000000000 | 0000 |
Straight Sockets, Barbed Tube
Barbed plugs and sockets insert into tubing and secure with a clamp.
| For Tube ID | Material | Color | Clarity | Max. Pressure | Pkg. Qty. | Pkg. | |
| 1/16" | Polycarbonate Plastic | Clear | Clear | 40 psi @ 72° F | 10 | 000000000 | 00000 |
| 3/32" | Polycarbonate Plastic | Clear | Clear | 40 psi @ 72° F | 10 | 000000000 | 0000 |
| 1/8" | Polycarbonate Plastic | Clear | Clear | 40 psi @ 72° F | 10 | 000000000 | 0000 |
| 5/32" | Polycarbonate Plastic | Clear | Clear | 40 psi @ 72° F | 10 | 000000000 | 0000 |
| 3/16" | Polycarbonate Plastic | Clear | Clear | 40 psi @ 72° F | 10 | 000000000 | 0000 |
| 1/4" | Polycarbonate Plastic | Clear | Clear | 40 psi @ 72° F | 10 | 000000000 | 0000 |