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 Push-to-Connect Tube Fittings for Chemicals
- For Use With: Inch: Alcohol, Hydrochloric Acid, Nitric Acid, Sodium Carbonate, Sulfuric Acid
Metric: Acetic Acid, Alcohol, Arsenic Acid, Benzoic Acid, Fluoboric Acid, Sodium Carbonate, Sulfuric Acid - Temperature Range: Inch: 0° to 270° F
Metric: 32° to 175° F - Tubing: Use with hard (Durometer 55D-60D) FEP plastic
Also known as instant fittings, these chemical-resistant plastic fittings connect to tubing with a push. An internal gripping ring holds the tubing tight. To disconnect, push on the release ring and pull the tubing out of the fitting. Use these fittings in low-pressure applications.
PPS fittings resist a wide variety of chemicals, although are not for use with hydrochloric acid or nitric acid. They withstand temperatures up to 175° F.
Threaded connections can be taken apart as needed for maintenance and repair.
| For Tube OD | Pipe Size | Material | Color | Release Ring Color | Max. Pressure | Each | |
BSPT Threads | |||||||
|---|---|---|---|---|---|---|---|
| 6mm | 1/8 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | 0000000 | 00000 |
| 6mm | 1/4 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | 0000000 | 0000 |
| 8mm | 1/4 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | 0000000 | 00000 |
| 8mm | 3/8 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | 0000000 | 00000 |
| 10mm | 3/8 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | 0000000 | 00000 |
| 12mm | 1/4 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | 0000000 | 00000 |
| 12mm | 3/8 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | 0000000 | 00000 |
| 12mm | 1/2 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | 0000000 | 00000 |
Fittings with tube stem insert into the push-to-connect end of another fitting in place of a length of tubing.
Threaded connections can be taken apart as needed for maintenance and repair.
| For Tube OD | Pipe Size | Material | Color | Release Ring Color | Max. Pressure | Each | |
BSPT Threads | |||||||
|---|---|---|---|---|---|---|---|
| 4mm | 1/8 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | 0000000 | 000000 |
| 6mm | 1/8 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | 0000000 | 00000 |
| 6mm | 1/4 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | 0000000 | 00000 |
| 8mm | 1/8 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | 0000000 | 00000 |
| 8mm | 1/4 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | 0000000 | 00000 |
| 8mm | 3/8 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | 0000000 | 00000 |
| 10mm | 1/4 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | 0000000 | 00000 |
| 12mm | 3/8 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | 0000000 | 00000 |
| For Tube OD, mm | Material | Color | Release Ring Color | Max. Pressure | Mounting Fasteners Included | Each | |
| 4 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | No | 0000000 | 000000 |
| 6 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | No | 0000000 | 00000 |
| 8 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | No | 0000000 | 00000 |
| 10 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | No | 0000000 | 00000 |
| 12 | PPS Plastic | Gray | Gray | 130 psi @ 72° F | No | 0000000 | 00000 |
Compression Fittings for Plastic Tubing—Chemicals
- For Use With: PFA Plastic: Hydrochloric Acid, Sulfuric Acid
PTFE Plastic: Alcohol, Ammonia, Benzoic Acid, Bleach, Bromine, Coolant, Fluoboric Acid, Hydrochloric Acid, Hydrofluoric Acid, Nitric Acid, Organic Solvents, Sodium Carbonate, Sulfuric Acid - Temperature Range: PFA Plastic: 0° to 350° F
PTFE Plastic: -40° to 185° F - Tubing: PFA Plastic: Use with hard (Durometer 50D-65D) PFA or PTFE plastic
PTFE Plastic: Use with hard (Durometer 60D) PFA or PTFE plastic
A sleeve (ferrule) compresses the tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included. Fittings are also known as flareless fittings. Fittings that include a gripper sleeve on the tubing create an even tighter seal.
PTFE fittings are highly resistant to most acids, alcohols, detergents, and solvents. They’re made by machining. Their nut is made of PVDF, which is resistant to halogens such as chlorine and bromine, strong acids such as hydrofluoric and nitric acids, and organic solvents.
| For Tube OD | Pipe Size | Material | Color | Max. Pressure | Each | |
NPT Threads | ||||||
|---|---|---|---|---|---|---|
| 4mm | 1/8 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 000000 |
| 6mm | 1/8 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 00000 |
| 6mm | 1/4 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 00000 |
| 8mm | 1/4 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 00000 |
| 10mm | 1/4 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 000000 |
| 10mm | 3/8 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 00000 |
| 12mm | 3/8 | PTFE Plastic | White | 80 psi @ 72° F | 000000000 | 00000 |
| 12mm | 1/2 | PTFE Plastic | White | 80 psi @ 72° F | 000000000 | 00000 |
| For Tube OD | Pipe Size | Material | Color | Max. Pressure | Each | |
NPT Threads | ||||||
|---|---|---|---|---|---|---|
| 10mm | 3/8 | PTFE Plastic | White | 100 psi @ 72° F | 000000000 | 0000000 |
Through-wall fittings are also known as bulkhead couplings and panel-mount couplings; they mount through your wall or panel to create an inlet or outlet.
