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.
Plugs with magnet attract metal debris that could otherwise damage your system.
NPTF (Dryseal) threads and NPSL (National Pipe Straight Locknut) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Steam, Oil, Water, Natural Gas
- Pressure Class:
NPTF: 150 - Specifications Met:
Metric and BSPP: DIN 908 - Pipe Nipples and Pipe:
NPTF: Use Schedule 40 stainless steel - Flanges:
NPTF: Use Class 150 stainless steel
High-Pressure Stainless Steel Threaded SAE Pipe Flanges
Also known as Code 61 SAE hydraulic flanges, these let you create an access point in a high-pressure hydraulic line. To connect, bolt flanges to equipment, or bolt a flange with an O-ring groove surface to a flange with a flat surface of the same size. Flanges are 316 stainless steel for excellent corrosion resistance.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
- Specifications Met: SAE J518, ISO 6162
- For Use With: Hydraulic Fluid
Flange | Bolt Hole | 316/316L Stainless Steel | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | SAE Flange Size | Dash Size | Max. Pressure | Ht. | Wd. | Dp. | Mounting Hardware Included | For Bolt Dia. | Dia. | No. of | Ctr.-to-Ctr. | Each | |
NPTF | |||||||||||||
2 | 2 | 32 | 1,000 psi @ 72° F | 4" | 3 1/4" | 1 45/64" | No | 1/2" | 0.422" | 4 | 1.688", 3.062" | 0000000 | 0000000 |
- Specifications Met: SAE J518, ISO 6162
- For Use With: Hydraulic Fluid
Flange | Bolt Hole | 316/316L Stainless Steel | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | SAE Flange Size | Dash Size | Max. Pressure | Ht. | Wd. | Dp. | Mounting Hardware Included | For Bolt Dia. | Dia. | No. of | Ctr.-to-Ctr. | Each | |
NPTF | |||||||||||||
2 | 2 | 32 | 1,000 psi @ 72° F | 4" | 3 1/4" | 1 45/64" | Yes | 1/2" | 0.531" | 4 | 1.688", 3.062" | 0000000 | 0000000 |
High-Pressure Stainless Steel Threaded SAE Two-Piece Pipe Flanges
Combine an adapter with a two-piece pipe flange (sold separately) to build a customized flange connection. Also known as Code 61 or Code 62 split flanges, the two halves of the flange clamp around the adapter and bolt to another Code 61 or Code 62 flange. Flanges and adapters are 316 stainless steel which has excellent corrosion resistance.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
- For Use With: Hydraulic Fluid
- Specifications Met: SAE J518, ISO 6162
316/316L Stainless Steel | ||||||
---|---|---|---|---|---|---|
Pipe Size | For SAE Flange Size | Dash Size | Max. Pressure | For Flanged Connection Surface | Each | |
NPTF | ||||||
2 | 2 | 32 | 3,000 psi @ 72° F | O-Ring Groove | 0000000 | 0000000 |
- For Use With: Hydraulic Fluid
- Specifications Met: SAE J518, ISO 6162
Flange | For Bolt | 316/316L Stainless Steel | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SAE Flange Size | Dash Size | Max. Pressure | Ht. | Wd. | Dp. | Flanged Connection Surface | Mounting Hardware Included | For Bolt Dia. | Dia. | No. of | Ctr.-to-Ctr. | Each | |
Inch | |||||||||||||
2 | 32 | 3,000 psi @ 72° F | 4" | 3 13/16" | 1 1/32" | O-Ring Groove | Yes | 1/2" | 0.531" | 4 | 1.688", 3.062" | 0000000 | 0000000 |
Metric | |||||||||||||
2 | 32 | 3,000 psi @ 72° F | 102mm | 97mm | 26mm | O-Ring Groove | Yes | 12mm | 13mm | 4 | 43mm, 78mm | 0000000 | 000000 |
Extreme-Pressure Stainless Steel Threaded Pipe Fittings
With the strength to handle extreme pressures, these fittings can be used to connect equipment in hydraulic fluid lines. 316 stainless steel fittings have excellent corrosion resistance.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
- For Use With: Hydraulic Fluid, Oil, Water
- Specifications Met:
BSPP: ISO 1179, ISO 8434-6
316 Stainless Steel | ||||
---|---|---|---|---|
Pipe Size | Dash Size | Max. Pressure | Each | |
NPTF Female | ||||
2 | 32 | 2,400 psi @ 72° F | 000000000 | 0000000 |
Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings with Sealant
The male threads on these fittings have a sealant applied for extra leak protection. Fittings are made of galvanized iron or steel, which have fair corrosion resistance. Also known as Pressure Class 125 or 150 fittings, they are for use in low-pressure applications.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
- For Use With: Air, Oil, Natural Gas, Steam, Water
- Pressure Class: 150
- Specifications Met: See table
- Pipe Nipples and Pipe: Use Schedule 40 galvanized steel
- Flanges: Use Class 150 galvanized steel
Pipe Size | Drive Size | Max. Pressure | Max. Steam Pressure | Specifications Met | Each | |
NPTF Male | ||||||
---|---|---|---|---|---|---|
2 | 1" | 150 psi @ 72° F | 150 psi @ 360° F | ASME B16.14 | 0000000 | 000000 |
- For Use With: Air, Oil, Natural Gas, Steam, Water
- Pressure Class: 150
- Specifications Met: See table
- Pipe Nipples and Pipe: Use Schedule 40 galvanized steel
- Flanges: Use Class 150 galvanized steel
Pipe Size | Plug Construction | Max. Pressure | Max. Steam Pressure | Specifications Met | Each | |
NPTF Male | ||||||
---|---|---|---|---|---|---|
2 | Solid | 150 psi @ 72° F | 150 psi @ 360° F | ASME B16.14 | 0000000 | 000000 |
High-Pressure Steel Threaded SAE Pipe Flanges
Also known as Code 61 SAE hydraulic flanges, these let you create an access point in a high-pressure hydraulic line. To connect, bolt flanges to equipment, or bolt a flange with an O-ring groove surface to a flange with a flat surface of the same size. Flanges are for use in noncorrosive environments.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
- For Use With: Hydraulic Fluid
- Specifications Met: SAE J518, ISO 6162
Flange | Bolt Hole | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Dash Size | SAE Flange Size | Max. Pressure | Ht. | Wd. | Dp. | Mounting Hardware Included | For Bolt Dia. | Dia. | No. of | Ctr.-to-Ctr. | Each | |
NPTF | |||||||||||||
2 | 32 | 2 | 3,000 psi @ 72° F | 4" | 3 1/4" | 1 3/4" | No | 1/2" | 1/2" | 4 | 1.688", 3.063" | 0000000 | 000000 |
- For Use With: Hydraulic Fluid
- Specifications Met: SAE J518, ISO 6162
High-Pressure Steel Threaded SAE Two-Piece Pipe Flanges
Combine an adapter with a two-piece pipe flange (sold separately) to build a customized flange connection. Also known as Code 61 or Code 62 split flanges, the two halves of the flange clamp around the adapter and bolt to another Code 61 or Code 62 flange. The adapters have NPTF (Dryseal) threads, so they’re compatible with NPT threads. Flanges and adapters should be used in noncorrosive environments.
For technical drawings and 3-D models, click on a part number.
- For Use With: Hydraulic Fluid
- Specifications Met: SAE J518, ISO 6162
Flange | Bolt Hole | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SAE Flange Size | Dash Size | Max. Pressure | Ht. | Wd. | Dp. | Flanged Connection Surface | Mounting Hardware Included | For Bolt Dia. | Dia. | No. of | Ctr.-to-Ctr. | Each | |
Inch | |||||||||||||
2 | 32 | 3,000 psi @ 72° F | 4" | 3 13/16" | 1 1/32" | O-Ring Groove | Yes | 1/2" | 0.53" | 4 | 1 11/16" , 3 1/16" | 0000000 | 000000 |
2 | 32 | 6,000 psi @ 72° F | 5 1/4" | 4 1/2" | 2 1/16" | O-Ring Groove | Yes | 3/4" | 0.78" | 4 | 1 3/4" , 3 13/16" | 0000000 | 000000 |
Metric | |||||||||||||
2 | 32 | 3,000 psi @ 72° F | 102mm | 97mm | 26mm | O-Ring Groove | Yes | 12mm | 13mm | 4 | 43mm , 78mm | 0000000 | 00000 |
2 | 32 | 6,000 psi @ 72° F | 5 1/4" | 4 1/2" | 2 1/16" | O-Ring Groove | Yes | 20mm | 21mm | 4 | 1 3/4" , 3 13/16" | 0000000 | 000000 |
Compact Extreme-Pressure Steel Threaded Pipe Fittings
These fittings are strong enough to handle extreme pressures, yet small enough to fit into cramped spaces. They are galvanized steel, which has fair corrosion resistance.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
- For Use With: See table
- Specifications Met:
NPTF and UN/UNF (SAE Straight): ASTM A108
BSPP: ISO 1179, ISO 8434-6
BSPT: DIN EN 10226-1, ISO 7-1
Pipe Size | Dash Size | Max. Pressure | For Use With | Each | |
NPTF Male | |||||
---|---|---|---|---|---|
2 | 32 | 2,000 psi @ 72° F | Air, Hydraulic Fluid, Water | 000000000 | 000000 |
- For Use With: Air, Hydraulic Fluid, Water
- Specifications Met: ASTM A576
Pipe Size | Dash Size | Max. Pressure | Each | |
NPTF Female | ||||
---|---|---|---|---|
2 | 32 | 2,000 psi @ 72° F | 000000000 | 0000000 |
- For Use With:
NPTF and UN/UNF (SAE Straight): Air, Hydraulic Fluid, Water
Metric, BSPP and BSPT: Air, Hydraulic Fluid, Oil, Water - Specifications Met: See table
Pipe Size | Dash Size | Drive Size | Max. Pressure | Specifications Met | Each | |
NPTF Male | ||||||
---|---|---|---|---|---|---|
2 | 32 | 3/4" | 2,000 psi @ 72° F | ASTM A108 | 000000000 | 000000 |
- For Use With: See table
- Specifications Met: See table
Pipe Size | Dash Size | Plug Construction | Max. Pressure | For Use With | Specifications Met | Each | |
NPTF Male | |||||||
---|---|---|---|---|---|---|---|
2 | 32 | Hollow | 2,000 psi @ 72° F | Air, Hydraulic Fluid, Water | ASTM A108 | 000000000 | 000000 |
37° Flared Fittings for Steel Tubing
- Tubing: Use with seamless steel
- Specifications Met: SAE J514
Also known as JIC (Joint Industrial Council) fittings, these provide a tight metal-to-metal seal on tubing that is flared to 37°. They require a nut and a sleeve (ferrule) for each tube end. Nuts and sleeves are sold separately. Fittings are zinc-plated steel for fair corrosion resistance.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
- For Use With: See Table
- Temperature Range: See Table
For Tube OD | Pipe Size | For Use With | Material | Max. Pressure | Temp. Range, °F | Each | |
NPTF Threads | |||||||
---|---|---|---|---|---|---|---|
2" | 2 | Air, Fuel Oil, Hydraulic Fluid, Mineral Oil | Zinc-Plated Steel | 1,100 psi @ 72° F | -60° to 400° | 00000000 | 000000 |
- For Use With: Air, Fuel Oil, Hydraulic Fluid, Mineral Oil
- Temperature Range: -60° to 400° F
For Tube OD | Pipe Size | Material | Max. Pressure | Each | |
NPTF Threads | |||||
---|---|---|---|---|---|
2" | 2 | Zinc-Plated Steel | 1,100 psi @ 72° F | 00000000 | 000000 |
Open-Flow Quick-Disconnect Hose Couplings for Air and Water
Couplings allow for maximum flow because there’s no shut-off valve in the plug or the socket. A complete coupling consists of a plug and a socket (both sold separately) that connect and disconnect quickly. Use them if you need frequent access to a line. All Open-Flow plugs are compatible with any of the Open-Flow sockets of the same coupling size, regardless of the pipe size. They are compatible with Hansen ST, Parker ST, and Perfecting E couplings.
Plugs are also known as nipples.
Sockets are sleeve-lock style. To connect, slide back the sleeve on the socket, insert the plug, and release the sleeve. To disconnect, slide back the sleeve and pull out the plug.
303 stainless steel plugs and sockets have very good corrosion resistance. They’re the best choice for high-humidity environments.
Note: To ensure a correct fit, make sure that the plug and socket have the same coupling size.
Warning: There is no valve in these couplings. Stop the air and water flow before you disconnect the line.
- Maximum Pressure: See table
- Temperature Range: -40° to 250° F
- Compatible With: Hansen ST Couplings, Parker ST Couplings, Perfecting E Couplings
Plug Tip | ||||||
---|---|---|---|---|---|---|
Coupling Size | Lg. | Dia. | Pipe Size | Max. Pressure | Each | |
303 Stainless Steel | ||||||
2 | 1/4" | 2 3/16" | 2 | 1,500 psi @ 72° F | 00000000 | 0000000 |
- Maximum Pressure: See table
- Temperature Range: -40° to 250° F
- Compatible With: Hansen ST Couplings, Parker ST Couplings, Perfecting E Couplings
For Plug Tip | ||||||
---|---|---|---|---|---|---|
Coupling Size | Lg. | Dia. | Pipe Size | Max. Pressure | Each | |
303 Stainless Steel | ||||||
2 | 1/4" | 2 3/16" | 2 | 1,500 psi @ 72° F | 00000000 | 000000000 |