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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Aluminum Unthreaded Pipe Flanges
Also known as Pressure Class 125 flanges, these are for use in low-pressure applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line. Flanges are aluminum, which is lightweight with good corrosion resistance.
Butt-weld flanges are also known as weld-neck flanges; the flange neck has a beveled end that, when flush to pipe, creates a trough for a strong weld. Slip-on weld flanges have no internal stop; slide a pipe through the flange and weld on both sides. Reducing flanges let you transition your system to a smaller pipe size; attach to a flange with a larger pipe size but with the same flange dimensions. Cap flanges are also known as blind flanges.
- For Use With: Air, Oil, Water
- Pressure Class: 125
- Specifications Met: ASME B16.1
- Fittings: Use Schedule 40 aluminum
- Pipe: Use Schedule 40 aluminum
Bolt Hole | ||||||||
|---|---|---|---|---|---|---|---|---|
Pipe Size | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Each | |
| 1/2 | 3 1/2" | 1/2" | 5/8" | 4 | 2 3/8" | 150 psi @ 72° F | 000000000 | 000000 |
| 3/4 | 3 7/8" | 1/2" | 5/8" | 4 | 2 3/4" | 150 psi @ 72° F | 000000000 | 00000 |
| 1 | 4 1/4" | 1/2" | 5/8" | 4 | 3 1/8" | 150 psi @ 72° F | 000000000 | 00000 |
| 1 1/2 | 5" | 1/2" | 5/8" | 4 | 3 7/8" | 150 psi @ 72° F | 000000000 | 000000 |
| 2 | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 150 psi @ 72° F | 000000000 | 000000 |
| 2 1/2 | 7" | 5/8" | 3/4" | 4 | 5 1/2" | 150 psi @ 72° F | 000000000 | 000000 |
| 3 | 7 1/2" | 5/8" | 3/4" | 4 | 6" | 150 psi @ 72° F | 000000000 | 000000 |
| 4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 150 psi @ 72° F | 000000000 | 000000 |
| 6 | 11" | 3/4" | 7/8" | 8 | 9 1/2" | 150 psi @ 72° F | 000000000 | 000000 |
- For Use With: Air, Oil, Water
- Pressure Class: 125
- Specifications Met: ASME B16.1
- Fittings: Use Schedule 40 aluminum
- Pipe: Use Schedule 40 aluminum
Bolt Hole | ||||||||
|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Each | |
| 1/2 | 3 1/2" | 1/2" | 5/8" | 4 | 2 3/8" | 150 psi @ 72° F | 00000000 | 000000 |
| 3/4 | 3 7/8" | 1/2" | 5/8" | 4 | 2 3/4" | 150 psi @ 72° F | 00000000 | 00000 |
| 1 | 4 1/4" | 1/2" | 5/8" | 4 | 3 1/8" | 150 psi @ 72° F | 000000000 | 00000 |
| 1 1/4 | 4 5/8" | 1/2" | 5/8" | 4 | 3 1/2" | 150 psi @ 72° F | 000000000 | 00000 |
| 1 1/2 | 5" | 1/2" | 5/8" | 4 | 3 7/8" | 150 psi @ 72° F | 000000000 | 00000 |
| 2 | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 150 psi @ 72° F | 000000000 | 00000 |
| 2 1/2 | 7" | 5/8" | 3/4" | 4 | 5 1/2" | 150 psi @ 72° F | 000000000 | 00000 |
| 3 | 7 1/2" | 5/8" | 3/4" | 4 | 6" | 150 psi @ 72° F | 000000000 | 00000 |
| 4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 150 psi @ 72° F | 000000000 | 000000 |
| 6 | 11" | 3/4" | 7/8" | 8 | 9 1/2" | 150 psi @ 72° F | 000000000 | 000000 |
| 8 | 13 1/2" | 3/4" | 7/8" | 8 | 11 3/4" | 150 psi @ 72° F | 000000000 | 000000 |
- For Use With: Air, Oil, Water
- Pressure Class: 125
- Specifications Met: ASME B16.1
- Fittings: Use Schedule 40 aluminum
- Pipe: Use Schedule 40 aluminum
- For Use With: Air, Oil, Water
- Pressure Class: 125
- Specifications Met: ASME B16.1
- Fittings: Use Schedule 40 aluminum
- Pipe: Use Schedule 40 aluminum
Bolt Hole | ||||||||
|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Each | |
| 1/2 | 3 1/2" | 1/2" | 5/8" | 4 | 2 3/8" | 150 psi @ 72° F | 000000000 | 000000 |
| 3/4 | 3 7/8" | 1/2" | 5/8" | 4 | 2 3/4" | 150 psi @ 72° F | 000000000 | 00000 |
| 1 | 4 1/4" | 1/2" | 5/8" | 4 | 3 1/8" | 150 psi @ 72° F | 000000000 | 00000 |
| 1 1/4 | 4 5/8" | 1/2" | 5/8" | 4 | 3 1/2" | 150 psi @ 72° F | 000000000 | 00000 |
| 1 1/2 | 5" | 1/2" | 5/8" | 4 | 3 7/8" | 150 psi @ 72° F | 000000000 | 00000 |
| 2 | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 150 psi @ 72° F | 000000000 | 00000 |
| 2 1/2 | 7" | 5/8" | 3/4" | 4 | 5 1/2" | 150 psi @ 72° F | 000000000 | 00000 |
| 3 | 7 1/2" | 5/8" | 3/4" | 4 | 6" | 150 psi @ 72° F | 000000000 | 000000 |
| 4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 150 psi @ 72° F | 000000000 | 000000 |
| 6 | 11" | 3/4" | 7/8" | 8 | 9 1/2" | 150 psi @ 72° F | 000000000 | 000000 |
| 8 | 13 1/2" | 3/4" | 7/8" | 8 | 11 3/4" | 150 psi @ 72° F | 000000000 | 000000 |
Low-Pressure Aluminum Threaded Pipe Flanges
Also known as Pressure Class 125 flanges, these are for use in low-pressure applications. Bolt two same-size flanges together with a gasket (sold separately) to create an access point within a line. Flanges are aluminum, which is lightweight with good corrosion resistance.
Reducing flanges allow you to transition your system to a smaller pipe size; attach to a flange with a larger pipe size but with the same flange dimensions.
- For Use With: Air, Oil, Water
- Pressure Class: 125
- Specifications Met:
Pipe Size 1-6: ASME B16.1 - Fittings: Use Class 150 aluminum
- Pipe Nipples and Pipe: Use Schedule 40 aluminum
Bolt Hole | ||||||||
|---|---|---|---|---|---|---|---|---|
| Pipe Size | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Each | |
NPT | ||||||||
| 1 | 4 1/4" | 1/2" | 5/8" | 4 | 3 1/8" | 150 psi @ 72° F | 000000000 | 000000 |
| 1 1/4 | 4 5/8" | 1/2" | 5/8" | 4 | 3 1/2" | 150 psi @ 72° F | 000000000 | 00000 |
| 1 1/2 | 5" | 1/2" | 5/8" | 4 | 3 7/8" | 150 psi @ 72° F | 000000000 | 00000 |
| 2 | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 150 psi @ 72° F | 000000000 | 00000 |
| 2 1/2 | 7" | 5/8" | 3/4" | 4 | 5 1/2" | 150 psi @ 72° F | 000000000 | 00000 |
| 3 | 7 1/2" | 5/8" | 3/4" | 4 | 6" | 150 psi @ 72° F | 000000000 | 00000 |
| 4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 150 psi @ 72° F | 000000000 | 000000 |
| 6 | 11" | 3/4" | 7/8" | 8 | 9 1/2" | 150 psi @ 72° F | 000000000 | 000000 |
| 8 | 13 1/2" | 3/4" | 7/8" | 8 | 11 3/4" | 150 psi @ 72° F | 000000000 | 000000 |
- For Use With: Air, Oil, Water
- Pressure Class: 125
- Specifications Met: ASME B16.1
- Fittings: Use Class 150 aluminum
- Pipe Nipples and Pipe: Use Schedule 40 aluminum
Bolt Hole | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | For Flange Pipe Size | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Each | |
NPT | |||||||||
| 1/2 | 3/4 | 3 7/8" | 1/2" | 5/8" | 4 | 2 3/4" | 150 psi @ 72° F | 000000000 | 000000 |
| 3/4 | 1 | 4 1/4" | 1/2" | 5/8" | 4 | 3 1/8" | 150 psi @ 72° F | 000000000 | 00000 |
| 1 | 1 1/4 | 4 5/8" | 1/2" | 5/8" | 4 | 3 1/2" | 150 psi @ 72° F | 000000000 | 00000 |
| 1 1/4 | 1 1/2 | 5" | 1/2" | 5/8" | 4 | 3 7/8" | 150 psi @ 72° F | 000000000 | 00000 |
| 1 1/2 | 2 | 6" | 5/8" | 3/4" | 4 | 4 3/4" | 150 psi @ 72° F | 000000000 | 00000 |
| 2 | 2 1/2 | 7" | 5/8" | 3/4" | 4 | 5 1/2" | 150 psi @ 72° F | 000000000 | 00000 |
| 2 | 3 | 7 1/2" | 5/8" | 3/4" | 4 | 6" | 150 psi @ 72° F | 000000000 | 000000 |
| 3 | 4 | 9" | 5/8" | 3/4" | 8 | 7 1/2" | 150 psi @ 72° F | 000000000 | 000000 |
| 4 | 6 | 11" | 3/4" | 7/8" | 8 | 9 1/2" | 150 psi @ 72° F | 000000000 | 000000 |
| 6 | 8 | 13 1/2" | 3/4" | 7/8" | 8 | 11 3/4" | 150 psi @ 72° F | 000000000 | 000000 |
Medium-Pressure Aluminum Threaded Pipe Fittings
Designed for medium-pressure applications, these fittings have better strength than our low-pressure aluminum pipe fittings. They are lightweight with good corrosion resistance.
BSPP male threads have a gasket to protect against leaks.
- For Use With: Air, Oil, Water
- Specifications Met: ASME B1.20.1, ASTM B241
| Pipe Size | Max. Pressure | Each | |
NPT Female × BSPP Male | |||
|---|---|---|---|
| 1/8 | 150 psi @ 72° F | 0000000 | 000000 |
| 1/4 | 150 psi @ 72° F | 0000000 | 00000 |
| 3/8 | 150 psi @ 72° F | 0000000 | 00000 |
| 1/2 | 150 psi @ 72° F | 0000000 | 00000 |
| 3/4 | 150 psi @ 72° F | 0000000 | 00000 |
| 1 | 150 psi @ 72° F | 0000000 | 00000 |
NPT Female × BSPT Male | |||
| 1/8 | 150 psi @ 72° F | 0000000 | 00000 |
| 1/4 | 150 psi @ 72° F | 0000000 | 00000 |
| 3/8 | 150 psi @ 72° F | 0000000 | 00000 |
| 1/2 | 150 psi @ 72° F | 0000000 | 00000 |
| 3/4 | 150 psi @ 72° F | 0000000 | 00000 |
BSPP Female × NPT Male | |||
| 1/8 | 150 psi @ 72° F | 000000 | 00000 |
| 1/4 | 150 psi @ 72° F | 000000 | 00000 |
| 3/8 | 150 psi @ 72° F | 000000 | 00000 |
| 1/2 | 150 psi @ 72° F | 0000000 | 00000 |
| 3/4 | 150 psi @ 72° F | 0000000 | 00000 |
| 1 | 150 psi @ 72° F | 0000000 | 00000 |
BSPT Female × NPT Male | |||
| 1/8 | 150 psi @ 72° F | 000000 | 00000 |
| 1/4 | 150 psi @ 72° F | 000000 | 00000 |
| 3/8 | 150 psi @ 72° F | 000000 | 00000 |
| 1/2 | 150 psi @ 72° F | 000000 | 00000 |
| 3/4 | 150 psi @ 72° F | 000000 | 00000 |
| 1 | 150 psi @ 72° F | 000000 | 00000 |
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.
Aluminum fittings are lighter in weight than 316 stainless steel fittings. They have good 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 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:
Aluminum: ASME B16.24, Fed. Spec. A-A-59326
316 Stainless Steel: ASME B16.5, Fed. Spec. A-A-59326
Plugs with flanged end are also known as PFA adapters. Bolt the flanged end to another same-size flange with a gasket.
Bolt Hole | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Coupling Size | Plug OD | Pipe Size | Dash Size | Flange OD | Flanged Connection Surface | Pressure Class | Max. Pressure | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Each | |
Aluminum | |||||||||||||
| 2 | 2 1/2" | 2 | 32 | 6" | Flat | 150 | 250 psi @ 72° F | 5/8" | 3/4" | 4 | 4 3/4" | 000000000 | 0000000 |
| 3 | 3 5/8" | 3 | 48 | 7 1/2" | Flat | 150 | 200 psi @ 72° F | 5/8" | 3/4" | 4 | 6" | 000000000 | 000000 |
| 4 | 4 3/4" | 4 | 64 | 9" | Flat | 150 | 150 psi @ 72° F | 5/8" | 3/4" | 8 | 7 1/2" | 000000000 | 000000 |
| 6 | 6 15/16" | 6 | 96 | 11" | Flat | 150 | 75 psi @ 72° F | 3/4" | 7/8" | 8 | 9 1/2" | 000000000 | 000000 |
- 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:
Aluminum: ASME B16.24, Fed. Spec. A-A-59326
316 Stainless Steel: ASME B16.5, Fed. Spec. A-A-59326
Sockets with flanged end are also known as PFC couplers. Bolt the flanged end to another same-size flange with a gasket.
Sockets | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Bolt Hole | Replacement Gaskets | Replacement Levers | Protective Plugs | |||||||||||||||||
| Coupling Size | Socket ID | Pipe Size | Dash Size | Flange OD | Pressure Class | No. of Levers | Max. Pressure | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Each | Pkg. Qty. | Pkg. | Each | Each | ||||
Aluminum with Brass Levers and Zinc-Plated Steel Pull Rings | ||||||||||||||||||||
Flat Flanged Connection Surface | ||||||||||||||||||||
| 2 | 2 1/2" | 2 | 32 | 6" | 150 | 2 | 250 psi @ 72° F | 5/8" | 3/4" | 4 | 4 3/4" | 000000000 | 0000000 | 10 | 0000000 | 00000 | 000000000 | 00000 | 0000000 | 000000 |
| 3 | 3 5/8" | 3 | 48 | 7 1/2" | 150 | 2 | 200 psi @ 72° F | 5/8" | 3/4" | 4 | 6" | 000000000 | 000000 | 10 | 0000000 | 00000 | 000000000 | 0000 | 0000000 | 00000 |
| 4 | 4 3/4" | 4 | 64 | 9" | 150 | 2 | 150 psi @ 72° F | 5/8" | 3/4" | 8 | 7 1/2" | 000000000 | 000000 | 10 | 0000000 | 00000 | 000000000 | 0000 | 0000000 | 00000 |
| 6 | 6 15/16" | 6 | 96 | 11" | 150 | 2 | 75 psi @ 72° F | 3/4" | 7/8" | 8 | 9 1/2" | 000000000 | 000000 | 5 | 0000000 | 00000 | 000000000 | 00000 | 000000 | 00 |
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.
Aluminum couplings are lighter in weight than brass plugs and sockets. They have good abrasion and corrosion resistance thanks to their anodized finish.
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.
- Maximum Pressure: See table
- Temperature Range: -65° to 250° F
- Specifications Met: ASME B16.5, 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
Plugs with flanged end are also known as PFA adapters. Bolt the flanged end to another same-size flange with a gasket (sold separately).
Bolt Holes | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Coupling Size | Plug OD | Pipe Size | Flange OD | Flanged Connection Surface | Pressure Class | Max. Pressure | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Each | |
Anodized Aluminum | ||||||||||||
| 2 | 2 1/2" | 2 | 6" | Flat | 150 | 250 psi @ 72° F | 5/8" | 3/4" | 4 | 4 3/4" | 00000000 | 0000000 |
| 3 | 3 5/8" | 3 | 7 1/2" | Flat | 150 | 200 psi @ 72° F | 5/8" | 3/4" | 4 | 6" | 00000000 | 000000 |
| 4 | 4 3/4" | 4 | 9" | Flat | 150 | 150 psi @ 72° F | 5/8" | 3/4" | 8 | 7 1/2" | 00000000 | 000000 |
| 6 | 6 15/16" | 6 | 11" | Flat | 150 | 75 psi @ 72° F | 3/4" | 7/8" | 8 | 9 1/2" | 00000000 | 000000 |