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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Yor-Lok Fittings for Stainless Steel Tubing
![](/prerenderstable/mvPRE/contents/gfx/imagecache/518/5182k125--41abaabaaa61639418205-p9@halfx_637749934133411352.png?ver=imagenotfound)
A nut with two sleeves (ferrules) gives these fittings extra gripping power. The sleeves bite into tubing as you tighten the nut, creating a strong seal. Also known as instrumentation fittings, they are made to tight tolerances for use in high-precision applications. They are compatible with Swagelok®, Let-Lok, and A-Lok fittings.
316 stainless steel fittings have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/518/5182k785-@halfx_637749904095930763.png?ver=imagenotfound)
- For Use With: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Natural Gas, Steam, Water
- Tubing: Use with welded or seamless 304/304L or 316/316L stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
Inline tees are also known as branch tees.
For Tube | |||||||
---|---|---|---|---|---|---|---|
OD | Wall Thick. | Pipe Size | Material | Max. Pressure | Temp. Range, °F | Each | |
NPT Threads | |||||||
6mm | 1 to 1.5 mm | 1/8 | 316 Stainless Steel | 4,400 psi @ 72° F | -420° to 1200° | 00000000 | 000000 |
8mm | 1 to 1.5 mm | 1/4 | 316 Stainless Steel | 4,400 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
10mm | 1 to 1.5 mm | 1/4 | 316 Stainless Steel | 3,400 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
12mm | 1 to 2 mm | 1/4 | 316 Stainless Steel | 2,900 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/518/5182k436-@halfx_637749873807014961.png?ver=imagenotfound)
- For Use With: Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid, Mineral Oil, Natural Gas, Steam, Water
- Tubing: Use with welded or seamless 304/304L or 316/316L stainless steel that meets ASTM A213, ASTM A249, or ASTM A269
For Tube | ||||||
---|---|---|---|---|---|---|
OD | Wall Thick. | Material | Max. Pressure | Temp. Range, °F | Each | |
3mm | 0.5mm | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 000000 |
4mm | 1mm | 316 Stainless Steel | 3,500 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
6mm | 1mm | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
8mm | 1mm | 316 Stainless Steel | 3,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
10mm | 0.5mm | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
12mm | 0.5mm | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
14mm | 1.5mm | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/518/5182k556-@halfx_637749887448255208.png?ver=imagenotfound)
For Tube | ||||||
---|---|---|---|---|---|---|
OD | Wall Thick. | Nut Material | Max. Pressure | Temp. Range, °F | Each | |
3mm | 0.5mm | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
4mm | 1mm | 316 Stainless Steel | 3,500 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
6mm | 1mm | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
8mm | 1mm | 316 Stainless Steel | 3,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
10mm | 0.5mm | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
12mm | 0.5mm | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
14mm | 1.5mm | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/518/5182k506c1-c01f-digital@halfx_637093481488444667.png?ver=imagenotfound)
For Tube | ||||||
---|---|---|---|---|---|---|
OD | Wall Thick. | Sleeve Material | Max. Pressure | Temp. Range, °F | Each | |
3mm | 0.5mm | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
4mm | 1mm | 316 Stainless Steel | 3,500 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
6mm | 1mm | 316 Stainless Steel | 4,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
8mm | 1mm | 316 Stainless Steel | 3,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
10mm | 0.5mm | 316 Stainless Steel | 2,500 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
12mm | 0.5mm | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 0000 |
14mm | 1.5mm | 316 Stainless Steel | 2,000 psi @ 72° F | -420° to 1200° | 00000000 | 00000 |
Compression Fittings for Steel Tubing
![](/prerenderstable/mvPRE/contents/gfx/imagecache/522/52215k541--68ec3d19e7f1637786564-p9@halfx_637733617959952807.png?ver=imagenotfound)
- For Use With: Inch: Air, Hydraulic Fluid, Water
Metric: Hydraulic Fluid - Tubing: Inch: Use with welded steel
Metric: Use with seamless steel - Specifications Met: Inch: SAE J514
Metric: ISO 8434, DIN 2353
A single sleeve (ferrule) bites into tubing as you tighten the nut, creating a strong seal. The nut and sleeve are included. Fittings are also known as flareless and bite fittings.
Zinc-plated steel fittings have fair corrosion resistance.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/522/52215k491-@halfx_637738803534247463.png?ver=imagenotfound)
- Temperature Range: -65° to 400° F
Inline tees are also known as branch tees.
For Tube | ||||||
---|---|---|---|---|---|---|
OD | Wall Thick. | Pipe Size | Material | Max. Pressure | Each | |
NPTF Threads | ||||||
1/4" | 0.035" | 1/8 | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 00000 |
1/4" | 0.035" | 1/4 | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 00000 |
3/8" | 0.035" | 1/4 | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 00000 |
1/2" | 0.049" | 3/8 | Zinc-Plated Steel | 2,000 psi @ 72° F | 000000000 | 00000 |
1/2" | 0.049" | 1/2 | Zinc-Plated Steel | 2,000 psi @ 72° F | 000000000 | 00000 |
3/4" | 0.065" | 3/4 | Zinc-Plated Steel | 2,000 psi @ 72° F | 000000000 | 00000 |
1" | 0.065" | 1 | Zinc-Plated Steel | 2,000 psi @ 72° F | 000000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/522/52215k475-@halfx_637733624036613461.png?ver=imagenotfound)
- Temperature Range: -65° to 400° F
Right-angle tees are also known as run tees.
For Tube | ||||||
---|---|---|---|---|---|---|
OD | Wall Thick. | Pipe Size | Material | Max. Pressure | Each | |
NPTF Threads | ||||||
1/4" | 0.035" | 1/4 | Zinc-Plated Steel | 4,000 psi @ 72° F | 000000000 | 000000 |
3/8" | 0.035" | 1/4 | Zinc-Plated Steel | 3,000 psi @ 72° F | 000000000 | 00000 |
1/2" | 0.049" | 3/8 | Zinc-Plated Steel | 2,000 psi @ 72° F | 000000000 | 00000 |
5/8" | 0.058" | 1/2 | Zinc-Plated Steel | 1,000 psi @ 72° F | 000000000 | 00000 |
3/4" | 0.065" | 3/4 | Zinc-Plated Steel | 2,000 psi @ 72° F | 000000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/522/52215k525-@halfx_637733626694261755.png?ver=imagenotfound)
- Temperature Range: See table
For Tube OD | Nut Material | Max. Pressure | Temp. Range, °F | Each | |
1/4" | Zinc-Plated Steel | 4,000 psi @ 72° F | -65° to 400° | 000000000 | 00000 |
3/8" | Zinc-Plated Steel | 3,000 psi @ 72° F | -65° to 400° | 000000000 | 0000 |
1/2" | Zinc-Plated Steel | 2,000 psi @ 72° F | -65° to 400° | 000000000 | 0000 |
5/8" | Zinc-Plated Steel | 1,000 psi @ 72° F | -65° to 400° | 000000000 | 0000 |
3/4" | Zinc-Plated Steel | 2,000 psi @ 72° F | -65° to 400° | 000000000 | 0000 |
1" | Zinc-Plated Steel | 2,000 psi @ 72° F | -65° to 400° | 000000000 | 0000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/522/52215k509-@halfx_637733625068792545.png?ver=imagenotfound)
- Temperature Range: See table
For Tube OD | Sleeve Material | Max. Pressure | Temp. Range, °F | Each | |
1/4" | Zinc-Plated Steel | 4,000 psi @ 72° F | -65° to 400° | 000000000 | 00000 |
3/8" | Zinc-Plated Steel | 3,000 psi @ 72° F | -65° to 400° | 000000000 | 0000 |
1/2" | Zinc-Plated Steel | 2,000 psi @ 72° F | -65° to 400° | 000000000 | 0000 |
5/8" | Zinc-Plated Steel | 1,000 psi @ 72° F | -65° to 400° | 000000000 | 0000 |
3/4" | Zinc-Plated Steel | 2,000 psi @ 72° F | -65° to 400° | 000000000 | 0000 |
1" | Zinc-Plated Steel | 2,000 psi @ 72° F | -65° to 400° | 000000000 | 0000 |
Vibration-Resistant Compression Fittings for Steel Tubing
![](/prerenderstable/mvPRE/contents/gfx/imagecache/594/5949k12--257a250599b1637697695-p9@halfx_637732729245285119.png?ver=imagenotfound)
- For Use With: Cutting Oil, Diesel Fuel
- Temperature Range: -30° to 250° F
- Tubing: Use with seamless steel
- Specifications Met: DIN 3861
The sleeve (ferrule) in these fittings is made of rubber instead of metal, so it cushions the tubing and absorbs vibration while creating a tight seal. Fittings are also known as flareless fittings. They are zinc-plated steel for fair corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Compression Tube Fittings for Food and Beverage
![](/prerenderstable/mvPRE/contents/gfx/imagecache/507/50775k305-50775k369-5112k65c1-c01f-digital-master1557778037-p9@halfx_636933578861280230.png?ver=imagenotfound)
- Temperature Range: -40° to 200° F
- Tubing: Use with firm or hard (Durometer 45D-65D) EVA plastic, nylon plastic, polyethylene plastic, polypropylene plastic, or polyurethane rubber
- Specifications Met: NSF/ANSI 51
A single sleeve (ferrule) and a gripping ring compress the tubing as you tighten the nut, creating a strong seal. The nut, sleeve, and gripping ring are included. Fittings are also known as flareless fittings. They are nylon for excellent impact and abrasion resistance.
NPTF (Dryseal) threads are compatible with NPT threads.
For technical drawings and 3-D models, click on a part number.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/507/50775k361-@halfx_637715372911597533.png?ver=imagenotfound)
Inline tees are also known as branch tees.
For Tube OD | Pipe Size | Material | Color | Gripping Ring Material | Max. Pressure | Each | |
NPTF Threads | |||||||
---|---|---|---|---|---|---|---|
1/4" | 1/8 | Nylon Plastic | White | 302 Stainless Steel | 300 psi @ 72° F | 000000000 | 00000 |
1/4" | 1/4 | Nylon Plastic | White | 302 Stainless Steel | 300 psi @ 72° F | 000000000 | 0000 |
3/8" | 1/4 | Nylon Plastic | White | 302 Stainless Steel | 250 psi @ 72° F | 000000000 | 0000 |
3/8" | 3/8 | Nylon Plastic | White | 302 Stainless Steel | 250 psi @ 72° F | 000000000 | 0000 |
1/2" | 3/8 | Nylon Plastic | White | 302 Stainless Steel | 200 psi @ 72° F | 000000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/507/50775k391-@halfx_637715401107791186.png?ver=imagenotfound)
Right-angle tees are also known as run tees.
For Tube OD | Pipe Size | Material | Color | Gripping Ring Material | Max. Pressure | Each | |
NPTF Threads | |||||||
---|---|---|---|---|---|---|---|
1/4" | 1/8 | Nylon Plastic | White | 302 Stainless Steel | 300 psi @ 72° F | 000000000 | 00000 |
3/8" | 1/4 | Nylon Plastic | White | 302 Stainless Steel | 250 psi @ 72° F | 000000000 | 00000 |
1/2" | 3/8 | Nylon Plastic | White | 302 Stainless Steel | 200 psi @ 72° F | 000000000 | 0000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/507/50775k399-@halfx_637715401710592531.png?ver=imagenotfound)
For Tube OD | Material | Color | Gripping Ring Material | Max. Pressure | Each | |
1/4" | Nylon Plastic | White | 302 Stainless Steel | 300 psi @ 72° F | 000000000 | 00000 |
5/16" | Nylon Plastic | White | 302 Stainless Steel | 300 psi @ 72° F | 000000000 | 0000 |
3/8" | Nylon Plastic | White | 302 Stainless Steel | 250 psi @ 72° F | 000000000 | 0000 |
1/2" | Nylon Plastic | White | 302 Stainless Steel | 200 psi @ 72° F | 000000000 | 00000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/507/50775k369-@halfx_637715418573110762.png?ver=imagenotfound)
Nut | Sleeve | |||||||
---|---|---|---|---|---|---|---|---|
For Tube OD | Material | Color | Material | Color | Gripping Ring Material | Max. Pressure | Each | |
1/4" | Nylon Plastic | White | Nylon Plastic | White | 302 Stainless Steel | 300 psi @ 72° F | 000000000 | 00000 |
5/16" | Nylon Plastic | White | Nylon Plastic | White | 302 Stainless Steel | 300 psi @ 72° F | 000000000 | 0000 |
3/8" | Nylon Plastic | White | Nylon Plastic | White | 302 Stainless Steel | 250 psi @ 72° F | 000000000 | 0000 |
1/2" | Nylon Plastic | White | Nylon Plastic | White | 302 Stainless Steel | 200 psi @ 72° F | 000000000 | 0000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/553/5533k344-@halfx_637715418292249649.png?ver=imagenotfound)
Tube supports are recommended if you want to use fittings with soft plastic and rubber tubing to prevent the tube from collapsing.
Thick-Wall Plastic Pipe Fittings for Water
Connect these fittings to Schedule 80 pipe–they have thicker, stronger walls than standard-wall fittings so they can handle heavy duty industrial plumbing and water supply applications, such as water processing, waste water 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. 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.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/484/4849k68p1-c01d-digital@halfx_637141850885641513.png?ver=imagenotfound)
- For Use With: Drinking Water, Water
- Maximum Temperature: 140° F
- Specifications Met: ASTM D1784, NSF/ANSI 61
- Pipe Nipples and Pipe: Use Schedule 80 Aluminum, Iron, PVC Plastic, Stainless Steel, Steel
- Flanges: Use Class 150 PVC Plastic
Saddle-tap tee adapters allow you to create additional outlets and connections in metal or plastic pipe. To install, shut down your line and drill a hole in the pipe where you want to create a connection. Position the saddle over the hole so the gasket and lip are fully engaged and secure with the included nuts, bolts, and washers.
Pipe Size | For Pipe Size | For Pipe OD | For Hole Dia. | Material | Collar Material | Color | Max. Pressure | Each | |
NPT Threads | |||||||||
---|---|---|---|---|---|---|---|---|---|
1/2 | 2 | 2 3/8" | 3/4" | PVC Plastic | Stainless Steel | Dark Gray | 200 psi @ 72° F | 0000000 | 000000 |
1/2 | 3 | 3 1/2" | 7/8" | PVC Plastic | Stainless Steel | Dark Gray | 200 psi @ 72° F | 0000000 | 00000 |
1/2 | 4 | 4 1/2" | 1 1/8" | PVC Plastic | Stainless Steel | Dark Gray | 200 psi @ 72° F | 0000000 | 000000 |
3/4 | 2 | 2 3/8" | 7/8" | PVC Plastic | Stainless Steel | Dark Gray | 200 psi @ 72° F | 0000000 | 00000 |
3/4 | 3 | 3 1/2" | 7/8" | PVC Plastic | Stainless Steel | Dark Gray | 200 psi @ 72° F | 0000000 | 00000 |
3/4 | 4 | 4 1/2" | 1 1/8" | PVC Plastic | Stainless Steel | Dark Gray | 200 psi @ 72° F | 0000000 | 000000 |
1 | 2 | 2 3/8" | 1 1/8" | PVC Plastic | Stainless Steel | Dark Gray | 200 psi @ 72° F | 0000000 | 00000 |
1 | 3 | 3 1/2" | 1 1/8" | PVC Plastic | Stainless Steel | Dark Gray | 200 psi @ 72° F | 0000000 | 00000 |
1 | 4 | 4 1/2" | 1 1/8" | PVC Plastic | Stainless Steel | Dark Gray | 200 psi @ 72° F | 0000000 | 000000 |
1 1/2 | 3 | 3 1/2" | 2 1/4" | PVC Plastic | Stainless Steel | Dark Gray | 200 psi @ 72° F | 0000000 | 00000 |
1 1/2 | 4 | 4 1/2" | 1 3/4" | PVC Plastic | Stainless Steel | Dark Gray | 200 psi @ 72° F | 0000000 | 000000 |
2 | 4 | 4 1/2" | 2 1/4" | PVC Plastic | Stainless Steel | Dark Gray | 200 psi @ 72° F | 0000000 | 000000 |
2 | 6 | 6 5/8" | 2 1/4" | PVC Plastic | Stainless Steel | Dark Gray | 200 psi @ 72° F | 0000000 | 000000 |