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 Steel Threaded Pipe Flanges
Use these flanges for low-pressure applications in noncorrosive environments. Bolt two flanges of the same size together with a gasket (sold separately) to create an access point within a line.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Natural Gas, Oil, Steam, Water
- Pressure Class: 150
- Specifications Met:
NPT: ASME B16.5, ASTM A105, MSS SP-25
BSPT: ASTM A105 - Fittings: Use Class 125 or 150 iron and steel
- Pipe Nipples and Pipe: Use Schedule 40 steel
Bolt Hole | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size  | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Max. Steam Pressure | Material | Each | |
BSPT | ||||||||||
| 4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 285 psi @ 72° F | 230 psi @ 300° F | Steel | 0000000 | 0000000 |
Thick-Wall Plastic Pipe Fittings for Water
Connect these fittings to Schedule 80 pipe. With thicker, stronger walls than standard-wall fittings, they can handle heavy duty supply applications, such as water processing, wastewater treatment, and irrigation. Fittings are plastic for good corrosion resistance. They meet ASTM specifications and testing requirements for material quality.
Fittings for drinking water meet NSF/ANSI Standard 61.
To prevent leaks in threaded connections, apply a sealant to the male threads. For plastic threads, apply a non-hardening, plastic-compatible sealant sealant. Tape or sealants with PTFE are not recommended for plastic-to-plastic connections. Note: For fittings that are not rated for pressure, you can use the pressure rating of the plastic pipe as a reference. Threaded fittings are limited to 50% of the rated pressure of the pipe.
Warning: Never use plastic pipe fittings and pipe with compressed air or gas.
For technical drawings and 3-D models, click on a part number.
- For Use With: Drinking Water, Water
- Maximum Temperature: 140° F
- Specifications Met: ASTM D1784, NSF/ANSI 61
- Pipe Nipples and Pipe: Use Schedule 80 PVC Plastic
- Flanges: Use Class 150 PVC Plastic
| Pipe Size | Material | O-Ring Material | Color | Max. Pressure | Each | |
BSPT × NPT Threads | ||||||
|---|---|---|---|---|---|---|
| 4 | PVC Plastic | EPDM Rubber | Dark Gray | 200 psi @ 72° F | 0000000 | 0000000 |
Easy-Fit Barbed Hose Fittings for Air and Water
Low-profile barbs and a longer first barb allow for a smoother, easier installation than other barbed fittings. Slide the barbed end into rubber hose and secure with a clamp.
Zinc-plated steel fittings have slightly better corrosion resistance than unplated steel fittings. Fittings with a threaded end are also known as hose nipples.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: See table
- Maximum Vacuum: Not Rated, except For 2 1/2" to 4" Hose IDs: 26 in. of Hg @ 72° F
- Temperature Range: -20° to 200° F, except For 2 1/2" to 4" Hose IDs: -20° to 400° F
- Attachment Type: Use Band-and-Buckle Clamps, except For 2 1/2" to 4" Hose IDs: Use Worm-Drive Clamps, Bolt Clamps or Band-and-Buckle Clamps
- Specifications Met: See table
| For Hose ID | Pipe Size | Body Shape | Max. Pressure | Specifications Met | Each | |
Zinc-Plated Steel | ||||||
|---|---|---|---|---|---|---|
| 4" | 4 | Round | 50 psi @ 72° F | ASTM A53 | 0000000 | 000000 |
Metal Cam-and-Groove Hose Couplings for Water
A complete coupling consists of a plug and a socket (both sold separately) that allow you to quickly connect and disconnect medium-to large-diameter hose lines. To connect, insert the plug into the socket and press the levers down. The levers fit snugly into the groove on the plug’s body and force the plug against the gasket to form a tight seal. To disconnect, lift both levers and pull out the plug.
Plugs with male threaded end are also known as F adapters.
Sockets with male threaded end are also known as B couplers.
Aluminum couplings are lighter in weight than brass plugs and sockets. They have good abrasion and corrosion resistance. Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size.
Warning: Relieve all pressure before disconnecting the couplings. Do not use cam-and-groove couplings with compressed air or gas.
For technical drawings and 3-D models, click on a part number.
- Maximum Pressure: See table
- Temperature Range: -65° to 250° F
- Specifications Met: Fed. Spec. A-A-59326
- Compatible With: Andrews Cam-and-Groove Couplings, Dixon Cam-and-Groove Couplings, Ever-Tite Cam-and-Groove Couplings, PT Coupling Cam-and-Groove Couplings
| Coupling Size | Plug OD | Pipe Size | Max. Pressure | Each | |
Anodized Aluminum | |||||
|---|---|---|---|---|---|
| 4 | 4 3/4" | 4 | 150 psi @ 72° F | 00000000 | 0000000 |
- Maximum Pressure: See table
- Temperature Range: -65° to 250° F
- Specifications Met: Fed. Spec. A-A-59326
- Compatible With: Andrews Cam-and-Groove Couplings, Dixon Cam-and-Groove Couplings, Ever-Tite Cam-and-Groove Couplings, PT Coupling Cam-and-Groove Couplings
Levers | ||||||||
|---|---|---|---|---|---|---|---|---|
| Coupling Size | Socket ID | Pipe Size | No. of | Material | Pull Ring Material | Max. Pressure | Each | |
Anodized Aluminum | ||||||||
| 4 | 4 3/4" | 4 | 2 | 316 Stainless Steel | Zinc-Plated Steel | 150 psi @ 72° F | 00000000 | 0000000 |
Easy-Fit Barbed Hose Fittings for Chemicals
Low-profile barbs and a longer first barb allow for a smoother, easier installation than other barbed fittings. Slide the barbed end into rubber hose and secure with a clamp. Fittings are 316 stainless steel, which has excellent corrosion resistance to withstand a variety of chemicals.
Adapters are also known as hose nipples; they adapt a barbed end to a threaded end.
For technical drawings and 3-D models, click on a part number.
- For Use With: Acetone, Isopropyl Alcohol, Mineral Oil, Sodium Hydroxide
- Maximum Pressure: See table
- Maximum Vacuum: 26 in. of Hg @ 72° F
- Temperature Range: -20° to 400° F
- Attachment Type: Use Worm-Drive Clamps, Bolt Clamps or Band-and-Buckle Clamps
- Specifications Met: ASTM A312
| For Hose ID | Pipe Size | Body Shape | Max. Pressure | Each | |
316 Stainless Steel | |||||
|---|---|---|---|---|---|
| 4" | 4 | Round | 50 psi @ 72° F | 0000000 | 0000000 |
Metal Cam-and-Groove Hose Couplings for Chemicals and Petroleum
Made of metal, these couplings have better durability than plastic cam-and-groove couplings. A complete coupling consists of a plug and a socket (both sold separately) that allow you to quickly connect and disconnect medium-to large-diameter hose lines. To connect, insert the plug into the socket and press the levers down. The levers fit snugly into the groove on the plug’s body and force the plug against the gasket to form a tight seal. To disconnect, lift both levers and pull out the plug. Couplings are compatible with Andrews, Dixon, Ever-Tite, and PT cam-and-groove couplings.
Plugs with male threaded end are also known as F adapters.
Plugs with female threaded end are also known as A adapters.
Aluminum plugs and sockets are lighter in weight than 316 stainless steel plugs and sockets. They have good corrosion resistance. 316 stainless steel plugs and sockets have excellent corrosion resistance.
Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size.
Warning: Relieve all pressure before disconnecting the couplings. Do not use cam-and-groove couplings with compressed air or gas.
For technical drawings and 3-D models, click on a part number.
- For Use With: Citric Acid, Diesel Fuel, Gasoline, Hydraulic Fluid
- Maximum Pressure: See table
- Temperature Range: -65° to 250° F
- Compatible With: Andrews Cam-and-Groove, Dixon Cam-and-Groove, Ever-Tite Cam-and-Groove, PT Coupling Cam-and-Groove
- Specifications Met: Fed. Spec. A-A-59326
- For Use With: Citric Acid, Diesel Fuel, Gasoline, Hydraulic Fluid
- Maximum Pressure: See table
- Temperature Range: -65° to 250° F
- Compatible With: Andrews Cam-and-Groove, Dixon Cam-and-Groove, Ever-Tite Cam-and-Groove, PT Coupling Cam-and-Groove
- Specifications Met: Fed. Spec. A-A-59326