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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About Metal Tubing
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High-Pressure Smooth-Bore Seamless Titanium Tubing
- Temperature Range: -20° to 600° F
- Bending Method: Tube Bender
Seamless construction with no weld bead gives this tubing a smooth interior for unrestricted flow. It is stronger than welded tubing and can be flared without splitting. Tubing is lightweight with excellent corrosion resistance. It connects by welding.
| OD | Wall Thickness | ID | Maximum Pressure | Temper Rating | 1 ft. | 3 ft. | 5 ft. | |
For Use With: Air, Oil, Salt Water, Sodium Chloride, Water | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 0.035" | 0.18" | 4,000 psi @ 72° F | Soft | 000000000 | |||
| 3/8" | 0.035" | 0.305" | 2,500 psi @ 72° F | Soft | 000000000 | |||
| 1/2" | 0.035" | 0.43" | 1,800 psi @ 72° F | Soft | 00000000 | |||
| 5/8" | 0.035" | 0.555" | 1,500 psi @ 72° F | Soft | 00000000 | |||
| 3/4" | 0.035" | 0.68" | 1,200 psi @ 72° F | Soft | 00000000 | |||
| 3/4" | 0.049" | 0.652" | 4,300 psi @ 72° F | Soft | 000000000 | |||
| 1" | 0.035" | 0.93" | 4,300 psi @ 72° F | Soft | 000000000 | |||
UV-Resistant Polypropylene Pipe for Chemicals
This polypropylene pipe resists the damaging effects of ultraviolet light, so it’s suitable for outdoor use. It has the chemical resistance to withstand a wide variety of acids, solvents, and other harsh substances. Pipe has thick, strong walls for heavy duty chemical processing applications. It meets ASTM D4101 specifications and testing requirements for material quality.
Warning: Never use plastic pipe fittings and pipe with compressed air or gas.
Sealants cannot be sold to Colorado, Connecticut, District of Columbia, Delaware, Illinois, Indiana, Massachusetts, Maryland, Maine, Michigan, New Hampshire, New Jersey, Northern Virginia, New York, Ohio, Pennsylvania, Rhode Island, or Utah due to local VOC (Volatile Organic Compounds) regulations.
- For Use With: Acetic Acid (5%), Calcium Chloride, Deionized Water, Hydrochloric Acid (10%), Phosphoric Acid (85%), Salt Water, Sodium Chloride, Sodium Hydroxide, Sulfuric Acid, Water
- Max. Temperature: 180° F
- Specifications Met: ASME B1.20.1, ASTM D4101
- Fittings: Use Schedule 80 Polypropylene Plastic
- Flanges: Use Class 150 Polypropylene Plastic
To prevent leaks in threaded connections, apply a non-hardening, plastic-compatible sealant to the male threads. Tape or sealants with PTFE are not recommended for plastic-to-plastic threaded connections. When making a threaded connection be careful not to overtighten the threads. To prevent cracks and leaks, finger tighten the fitting, then wrench-tighten one to two turns.
Pipe that meets ASME B1.20.1 adheres to quality specifications for thread dimensions.
Pipe Size | OD | ID | Wall Thick. | Material | Color | Max. Pressure | Each | |
2 ft. | ||||||||
|---|---|---|---|---|---|---|---|---|
NPT Threads | ||||||||
| 1/4 | 35/64" | 0.302" | 0.119" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 000000 |
| 1/2 | 27/32" | 0.546" | 0.147" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 00000 |
| 3/4 | 1 3/64" | 0.742" | 0.154" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 00000 |
| 1 | 1 5/16" | 0.957" | 0.179" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 00000 |
| 1 1/4 | 1 21/32" | 1.278" | 0.191" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 00000 |
| 1 1/2 | 1 29/32" | 1.5" | 0.2" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 00000 |
| 2 | 2 3/8" | 1.939" | 0.218" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 00000 |
| 3 | 3 1/2" | 2.9" | 0.3" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 000000 |
| 4 | 4 1/2" | 3.826" | 0.337" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 000000 |
3 ft. | ||||||||
NPT Threads | ||||||||
| 1/4 | 35/64" | 0.302" | 0.119" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 00000 |
| 1/2 | 27/32" | 0.546" | 0.147" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 00000 |
| 3/4 | 1 3/64" | 0.742" | 0.154" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 00000 |
| 1 | 1 5/16" | 0.957" | 0.179" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 00000 |
| 1 1/4 | 1 21/32" | 1.278" | 0.191" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 00000 |
| 1 1/2 | 1 29/32" | 1.5" | 0.2" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 00000 |
| 2 | 2 3/8" | 1.939" | 0.218" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 00000 |
| 3 | 3 1/2" | 2.9" | 0.3" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 000000 |
| 4 | 4 1/2" | 3.826" | 0.337" | Polypropylene Plastic | Black | 20 psi @ 72° F | 0000000 | 000000 |
| Non-Hardening Thread Sealant (8-oz. Brush-Top Can) | 000000 | Each | 000000 |
UV-Resistant Polypropylene Pipe Fittings for Chemicals
Made of polypropylene, these fittings won’t deteriorate when exposed to the damaging effects of ultraviolet light and are suitable to use outdoors. They have the chemical resistance to withstand a wide variety of acids, solvents, and other harsh substances. Apply a non-hardening, plastic-compatible sealant to the male threads to prevent leaks. Tape or sealants with PTFE are not recommended for plastic-to-plastic threaded connections. When making a threaded connection be careful not to overtighten the threads. To prevent cracks and leaks, finger tighten the fitting, then wrench-tighten one to two turns.
Schedule 40 fittings have thinner walls than Schedule 80 fittings and are typically used in commercial and residential applications.
Warning: Never use plastic pipe fittings and pipe with compressed air or gas.
- For Use With:
Pipe Sizes 1/8 to 1/2: Air, Calcium Chloride, Sodium Chloride, Water
Pipe Sizes 3/4 to 3: Acetic Acid (5%), Calcium Chloride, Hydrochloric Acid (10%), Phosphoric Acid (85%), Salt Water, Sodium Hydroxide, Sulfuric Acid (30%), Water - Temperature Range: 32° to 140° F
- Pipe Nipples and Pipe: Use Schedule 80 Polypropylene Plastic
- Flanges: Use Class 150 Polypropylene Plastic
| Pipe Size | Schedule | Drive Size | Material | Color | Max. Pressure | Each | |
NPT Threads | |||||||
|---|---|---|---|---|---|---|---|
| 1/8 | 40 | 5/8" | Polypropylene Plastic | Black | 150 psi @ 72° F | 00000000 | 00000 |
| 1/4 | 40 | 5/8" | Polypropylene Plastic | Black | 150 psi @ 72° F | 00000000 | 0000 |
| 3/8 | 40 | 3/4" | Polypropylene Plastic | Black | 150 psi @ 72° F | 00000000 | 0000 |
| 1/2 | 40 | 1" | Polypropylene Plastic | Black | 150 psi @ 72° F | 00000000 | 0000 |
| Non-Hardening Thread Sealant (8-oz. Brush-Top Can) | 000000 | Each | 000000 |
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 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 |