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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Low-Pressure Clamp-On Connectors for Chemical Waste
- For Use With: Acetone, Alcohol, Ammonia, Bleach, Calcium Chloride, Chlorine, Citric Acid, Fluoboric Acid, Hydrochloric Acid, Phosphoric Acid, Salt Water, Sodium Carbonate, Sodium Chloride, Sodium Hydroxide, Sulfuric Acid (30%), Water
- Temperature Range: 0° to 180° F
- Specifications Met: ASTM C1173
- For Pipe Material: See table
With an FEP sleeve and PTFE sealing tape, these connectors withstand chemicals better than rubber connectors. Use them for joining low-pressure chemical waste drainpipe and fittings or transitioning between different chemical piping. The connectors are 316 stainless steel for excellent corrosion resistance. They stand up to wet environments, just like 304 stainless steel, but unlike 304 stainless steel, they will not corrode from salt water, chlorine solutions, and chemicals.
To install, chamfer and deburr both ends of the pipe you need to join. Mark each pipe adjacent to the connector bands and apply 10 layers of the PTFE tape directly over each line. Doing this creates a seal between the sleeve and the pipe for extra leak protection. Then, center the FEP sleeve over the tape and use a heat gun to shrink the sleeve onto the pipe. Next, center the connector and tighten the clamps to 60 inch-lbs. to form a tight seal. Finally, test for leaks.
For technical drawings and 3-D models, click on a part number.
| For Pipe OD | For Pipe Size  | Lg. | Max. Pressure | Material | Sleeve Material | For Pipe Material | Includes | Each | |
| 1.7"-2.05" | 1 1/2 | 2" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 0000000 |
| 2.1"-2.6" | 2 | 3" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
| 2.6"-3.1" | 2 1/2 | 4" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
| 3.15"-3 1/2" | 3 | 6" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
| 4.3"-5.2" | 4 | 4" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
| 6.2"-7" | 6 | 4" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
| 8.35"-9.2" | 8 | 6" | 4 psi @ 72° F | 316 Stainless Steel | FEP Plastic | Glass, Iron, Plastic | PTFE Plastic Sealing Tape | 0000000 | 000000 |
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.
For technical drawings and 3-D models, click on a part number.
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 technical drawings and 3-D models, click on a part number.
| 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.
