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 Stainless Steel Threaded Pipe Fittings
Use these fittings in a low-pressure pipe line. 304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
Adapters for tanks create an inlet or outlet connection on the surface of any tank, pressure vessel, or drum. Through-wall bolt-on adapters for tanks can be tightened and adjusted from the outside so you don’t have to drain your line.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Water, Coolant
- Temperature Range: -40° to 225° F
Pipe Size | For Hole Dia. | For Max. Wall Thick. | Lg. | Wd. | Ht. | No. of Bolts Included | Gasket Material | Each | |
304 Stainless Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
NPT Female | |||||||||
| 1/2 | 1 1/16" | 1" | 13/16" | 3 1/2" | 3 1/2" | 4 | EPDM Rubber | 0000000 | 0000000 |
| 3/4 | 1 1/4" | 1" | 15/16" | 3 1/2" | 3 1/2" | 4 | EPDM Rubber | 0000000 | 000000 |
| 1 | 1 9/16" | 1" | 1 1/16" | 3 1/2" | 3 1/2" | 4 | EPDM Rubber | 0000000 | 000000 |
| 1 1/2 | 2 3/16" | 1" | 1 5/16" | 4" | 4" | 4 | EPDM Rubber | 0000000 | 000000 |
| 2 | 2 5/8" | 1" | 1 5/8" | 4 1/2" | 4 1/2" | 4 | EPDM Rubber | 0000000 | 000000 |
316 Stainless Steel | |||||||||
NPT Female | |||||||||
| 1/2 | 1 1/16" | 1" | 13/16" | 3 1/2" | 3 1/2" | 4 | EPDM Rubber | 0000000 | 000000 |
| 3/4 | 1 1/4" | 1" | 15/16" | 3 1/2" | 3 1/2" | 4 | EPDM Rubber | 0000000 | 000000 |
| 1 | 1 9/16" | 1" | 1 1/16" | 3 1/2" | 3 1/2" | 4 | EPDM Rubber | 0000000 | 000000 |
| 1 1/2 | 2 3/16" | 1" | 1 5/16" | 4" | 4" | 4 | EPDM Rubber | 0000000 | 000000 |
| 2 | 2 5/8" | 1" | 1 5/8" | 4 1/2" | 4 1/2" | 4 | EPDM Rubber | 0000000 | 000000 |
- For Use With: Air, Water, Coolant
- Temperature Range: -40° to 225° F
316 Stainless Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | For Hole Dia. | For Max. Wall Thick. | Lg. | Wd. | Ht. | No. of Bolts Included | Gasket Material | Each | |
NPT Male | |||||||||
| 1/2 | 7/8" | 1" | 2 7/16" | 3 1/2" | 3 1/2" | 4 | EPDM Rubber | 0000000 | 0000000 |
| 3/4 | 1 1/16" | 1" | 2 7/16" | 3 1/2" | 3 1/2" | 4 | EPDM Rubber | 0000000 | 000000 |
| 1 | 1 5/16" | 1" | 2 7/16" | 3 1/2" | 3 1/2" | 4 | EPDM Rubber | 0000000 | 000000 |
| 1 1/2 | 1 15/16" | 1" | 2 7/16" | 4" | 4" | 4 | EPDM Rubber | 0000000 | 000000 |
| 2 | 2 3/8" | 1" | 2 7/16" | 4 1/2" | 4 1/2" | 4 | EPDM Rubber | 0000000 | 000000 |
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.
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.