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How to Identify and Measure Fittings
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Precision Extreme-Pressure Stainless Steel Threaded Pipe Fittings
Made to tighter tolerances than other stainless steel pipe fittings, these are also known as instrumentation fittings. The male threads are rolled for extra strength in extreme-pressure applications. Fittings are commonly used to connect equipment in gas and hydraulic fluid lines. They are 316 stainless steel for excellent corrosion resistance.
Union connectors separate into three pieces so you can access your line without unthreading pipe connections.
Female x male 90° elbow adapters are also known as street elbows. Inline tees are also known as branch tees. Right-angle tees are also known as run tees. UN/UNF (SAE Straight) threads are also known as O-ring boss threads; the male threads have a gasket to prevent leaks.
Straight Connectors, Female
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3
316 Stainless Steel | |||||
|---|---|---|---|---|---|
Pipe Size | Dash Size | Max. Pressure | Max. Steam Pressure | Each | |
NPT Female | |||||
| 1/16 | __ | 7,500 psi @ 72° F | 7,500 psi @ 300° F | 000000000 | 000000 |
| 1/8 | 02 | 6,400 psi @ 72° F | 6,400 psi @ 300° F | 00000000 | 00000 |
| 1/4 | 04 | 6,600 psi @ 72° F | 6,600 psi @ 300° F | 00000000 | 00000 |
| 3/8 | 06 | 5,300 psi @ 72° F | 5,300 psi @ 300° F | 00000000 | 00000 |
| 1/2 | 08 | 5,200 psi @ 72° F | 5,200 psi @ 300° F | 00000000 | 00000 |
| 3/4 | 12 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 000000000 | 00000 |
| 1 | 16 | 4,400 psi @ 72° F | 4,400 psi @ 300° F | 000000000 | 00000 |
Straight Connectors, Male
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met:
3/4 Pipe Size: ASME B1.20.1, ASME B31.3, ASTM A276, ASTM A479
All other sizes: ASME B1.20.1, ASME B31.1, ASME B31.3
316 Stainless Steel | |||||
|---|---|---|---|---|---|
| Pipe Size | Dash Size | Max. Pressure | Max. Steam Pressure | Each | |
NPT Male | |||||
| 1/16 | __ | 10,000 psi @ 72° F | 10,000 psi @ 300° F | 000000000 | 000000 |
| 1/8 | 02 | 9,100 psi @ 72° F | 9,100 psi @ 300° F | 00000000 | 00000 |
| 1/4 | 04 | 7,500 psi @ 72° F | 7,500 psi @ 300° F | 00000000 | 00000 |
| 3/8 | 06 | 7,200 psi @ 72° F | 7,200 psi @ 300° F | 000000000 | 00000 |
| 1/2 | 08 | 6,600 psi @ 72° F | 6,600 psi @ 300° F | 000000000 | 00000 |
| 3/4 | 12 | 7,300 psi @ 72° F | 7,300 psi @ 300° F | 00000000 | 00000 |
| 1 | 16 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 000000000 | 00000 |
Straight Connectors with Hex, Male
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3
316 Stainless Steel | ||||||
|---|---|---|---|---|---|---|
| Pipe Size | Dash Size | Lg. | Max. Pressure | Max. Steam Pressure | Each | |
NPT Male | ||||||
| 1/16 | __ | 1 1/16" | 10,000 psi @ 72° F | 10,000 psi @ 300° F | 000000000 | 000000 |
| 1/16 | __ | 2" | 10,000 psi @ 72° F | 10,000 psi @ 300° F | 000000000 | 00000 |
| 1/16 | __ | 2 1/2" | 10,000 psi @ 72° F | 10,000 psi @ 300° F | 000000000 | 00000 |
| 1/16 | __ | 4" | 10,000 psi @ 72° F | 10,000 psi @ 300° F | 000000000 | 00000 |
| 1/8 | 02 | 1 1/16" | 9,100 psi @ 72° F | 9,100 psi @ 300° F | 00000000 | 0000 |
| 1/8 | 02 | 2" | 9,100 psi @ 72° F | 9,100 psi @ 300° F | 000000000 | 00000 |
| 1/8 | 02 | 2 1/2" | 9,100 psi @ 72° F | 9,100 psi @ 300° F | 000000000 | 00000 |
| 1/8 | 02 | 3" | 9,100 psi @ 72° F | 9,100 psi @ 300° F | 000000000 | 00000 |
| 1/8 | 02 | 4" | 9,100 psi @ 72° F | 9,100 psi @ 300° F | 000000000 | 00000 |
| 1/4 | 04 | 1 7/16" | 7,500 psi @ 72° F | 7,500 psi @ 300° F | 00000000 | 00000 |
| 1/4 | 04 | 2" | 7,500 psi @ 72° F | 7,500 psi @ 300° F | 00000000 | 00000 |
| 1/4 | 04 | 2 1/2" | 7,500 psi @ 72° F | 7,500 psi @ 300° F | 00000000 | 00000 |
| 1/4 | 04 | 3" | 7,500 psi @ 72° F | 7,500 psi @ 300° F | 00000000 | 00000 |
| 1/4 | 04 | 4" | 7,500 psi @ 72° F | 7,500 psi @ 300° F | 00000000 | 00000 |
| 3/8 | 06 | 1 7/16" | 7,200 psi @ 72° F | 7,200 psi @ 300° F | 000000000 | 00000 |
| 3/8 | 06 | 2" | 7,200 psi @ 72° F | 7,200 psi @ 300° F | 000000000 | 00000 |
| 3/8 | 06 | 2 1/2" | 7,200 psi @ 72° F | 7,200 psi @ 300° F | 000000000 | 00000 |
| 3/8 | 06 | 3" | 7,200 psi @ 72° F | 7,200 psi @ 300° F | 000000000 | 00000 |
| 3/8 | 06 | 4" | 7,200 psi @ 72° F | 7,200 psi @ 300° F | 000000000 | 00000 |
| 1/2 | 08 | 1 7/8" | 6,600 psi @ 72° F | 6,600 psi @ 300° F | 000000000 | 00000 |
| 1/2 | 08 | 2" | 6,600 psi @ 72° F | 6,600 psi @ 300° F | 000000000 | 00000 |
| 1/2 | 08 | 2 1/2" | 6,600 psi @ 72° F | 6,600 psi @ 300° F | 000000000 | 00000 |
| 1/2 | 08 | 3" | 6,600 psi @ 72° F | 6,600 psi @ 300° F | 000000000 | 00000 |
| 1/2 | 08 | 4" | 6,600 psi @ 72° F | 6,600 psi @ 300° F | 000000000 | 00000 |
| 3/4 | 12 | 1 27/32" | 7,300 psi @ 72° F | 7,300 psi @ 300° F | 000000000 | 00000 |
| 3/4 | 12 | 2" | 7,300 psi @ 72° F | 7,300 psi @ 300° F | 000000000 | 00000 |
| 3/4 | 12 | 3" | 7,300 psi @ 72° F | 7,300 psi @ 300° F | 000000000 | 00000 |
| 3/4 | 12 | 4" | 7,300 psi @ 72° F | 7,300 psi @ 300° F | 000000000 | 00000 |
| 1 | 16 | 2 5/16" | 5,300 psi @ 72° F | 5,300 psi @ 300° F | 000000000 | 00000 |
| 1 | 16 | 3" | 5,300 psi @ 72° F | 5,300 psi @ 300° F | 000000000 | 00000 |
| 1 | 16 | 4" | 5,300 psi @ 72° F | 5,300 psi @ 300° F | 000000000 | 00000 |
Union Straight Connectors
Assembled View
Exploded View
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A182, ASTM 276, ASTM A479
Straight Adapters, Female × Male
- For Use With:
NPT × BSPP: Natural Gas, Water
All others: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water - Specifications Met:
NPT × NPT: ASME B1.20.1, ASME B31.1, ASME B31.3
NPT × BSPP: ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A276, ASTM A479, ISO 228.1, ISO 228.2, ISO BS 2779
BSPP × NPT: ASME B1.20.1, ASME B31.1, ASME B31.3, ISO 228.1, ISO 228.2, ISO BS 2779
NPT × BSPT: ASME B1.20.1, ASME B31.1, ASME B31.3, ISO 7.1, ISO BS2.1
BSPT × NPT: ASME B1.20.1, ASME B31.1, ASME B31.3, ISO 7.1, ISO BS2.1
| Pipe Size | Dash Size | Max. Pressure | Max. Steam Pressure | Each | |
NPT Female × NPT Male | |||||
|---|---|---|---|---|---|
| 1/8 | 02 | 6,400 psi @ 72° F | 6,400 psi @ 300° F | 000000000 | 000000 |
| 1/4 | 04 | 6,600 psi @ 72° F | 6,600 psi @ 300° F | 00000000 | 00000 |
| 3/8 | 06 | 5,300 psi @ 72° F | 5,300 psi @ 300° F | 00000000 | 00000 |
| 1/2 | 08 | 5,200 psi @ 72° F | 5,200 psi @ 300° F | 00000000 | 00000 |
| 3/4 | 12 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 000000000 | 00000 |
| 1 | 16 | 4,400 psi @ 72° F | 4,400 psi @ 300° F | 000000000 | 00000 |
NPT Female × BSPT Male | |||||
| 1/8 | 02 | 6,100 psi @ 72° F | 6,100 psi @ 300° F | 0000000 | 00000 |
| 1/4 | 04 | 6,200 psi @ 72° F | 6,200 psi @ 300° F | 0000000 | 00000 |
| 3/8 | 06 | 5,000 psi @ 72° F | 5,000 psi @ 300° F | 0000000 | 00000 |
| 1/2 | 08 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 0000000 | 00000 |
| 3/4 | 12 | 4,300 psi @ 72° F | 4,300 psi @ 300° F | 0000000 | 00000 |
| 1 | 16 | 4,100 psi @ 72° F | 4,100 psi @ 300° F | 0000000 | 000000 |
BSPP Female × NPT Male | |||||
| 1/8 | 02 | 6,100 psi @ 72° F | 6,100 psi @ 300° F | 0000000 | 00000 |
| 1/4 | 04 | 6,200 psi @ 72° F | 6,200 psi @ 300° F | 0000000 | 00000 |
| 3/8 | 06 | 5,000 psi @ 72° F | 5,000 psi @ 300° F | 0000000 | 00000 |
| 1/2 | 08 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 0000000 | 00000 |
| 3/4 | 12 | 4,300 psi @ 72° F | 4,300 psi @ 300° F | 0000000 | 00000 |
| 1 | 16 | 4,100 psi @ 72° F | 4,100 psi @ 300° F | 0000000 | 000000 |
BSPT Female × NPT Male | |||||
| 1/8 | 02 | 6,100 psi @ 72° F | 6,100 psi @ 300° F | 0000000 | 00000 |
| 1/4 | 04 | 6,200 psi @ 72° F | 6,200 psi @ 300° F | 0000000 | 00000 |
| 3/8 | 06 | 5,000 psi @ 72° F | 5,000 psi @ 300° F | 0000000 | 00000 |
| 1/2 | 08 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 0000000 | 00000 |
| 3/4 | 12 | 4,300 psi @ 72° F | 4,300 psi @ 300° F | 0000000 | 00000 |
| 1 | 16 | 4,100 psi @ 72° F | 4,100 psi @ 300° F | 0000000 | 000000 |
Straight Adapters, Male
Straight Adapter, Male Threaded Pipe
UN/UNF
(SAE Straight) Male
Threads with Gasket
(SAE Straight) Male
Threads with Gasket
- For Use With:
NPT × BSPP: Natural Gas, Water
NPT × BSPT and UN/UNF (SAE Straight) Male × NPT Male: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water - Specifications Met:
NPT × BSPP: ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A276, ASTM A479, ISO 228.1, ISO 228.2, ISO BS 2779
NPT × BSPT: ASME B1.20.1, ASME B31.1, ASME B31.3, ISO 7.1, ISO BS2.1
UN/UNF (SAE Straight) Male × NPT Male: ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A182, ASTM A276, ASTM A479, SAE J1926
| Pipe Size (A) | Thread Size (A) | Dash Size (A) | Pipe Size (B) | Dash Size (B) | Max. Pressure | Max. Steam Pressure | Each | |
NPT Male × BSPT Male | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/8 | __ | 02 | 1/8 | 02 | 9,100 psi @ 72° F | 9,100 psi @ 300° F | 0000000 | 000000 |
| 1/4 | __ | 04 | 1/4 | 04 | 7,500 psi @ 72° F | 7,500 psi @ 300° F | 0000000 | 00000 |
| 3/8 | __ | 06 | 3/8 | 06 | 7,200 psi @ 72° F | 7,200 psi @ 300° F | 0000000 | 00000 |
| 1/2 | __ | 08 | 1/2 | 08 | 6,600 psi @ 72° F | 6,600 psi @ 300° F | 0000000 | 00000 |
| 3/4 | __ | 12 | 3/4 | 12 | 6,400 psi @ 72° F | 6,400 psi @ 300° F | 0000000 | 00000 |
| 1 | __ | 16 | 1 | 16 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 0000000 | 00000 |
UN/UNF (SAE Straight) Male × NPT Male | ||||||||
| __ | 3/4"-16 | 08 | 1/2 | 08 | 4,500 psi @ 72° F | 4,500 psi @ 300° F | 000000000 | 00000 |
| __ | 1 1/16"-12 | 12 | 3/4 | 12 | 3,600 psi @ 72° F | 3,600 psi @ 300° F | 000000000 | 00000 |
| __ | 1 5/16"-12 | 18 | 1 | 18 | 2,900 psi @ 72° F | 2,900 psi @ 300° F | 000000000 | 00000 |
Straight Reducing Adapters
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3
Pipe Size | Dash Size | 316 Stainless Steel | |||||
|---|---|---|---|---|---|---|---|
| (A) | (B) | (A) | (B) | Max. Pressure | Max. Steam Pressure | Each | |
NPT Female × NPT Male | |||||||
| 1/8 | 1/16 | 02 | __ | 6,400 psi @ 72° F | 6,400 psi @ 300° F | 000000000 | 000000 |
| 1/4 | 1/8 | 04 | 02 | 6,600 psi @ 72° F | 6,600 psi @ 300° F | 000000000 | 00000 |
| 3/8 | 1/8 | 06 | 02 | 5,300 psi @ 72° F | 5,300 psi @ 300° F | 000000000 | 00000 |
| 3/8 | 1/4 | 06 | 04 | 5,300 psi @ 72° F | 5,300 psi @ 300° F | 00000000 | 00000 |
| 1/2 | 1/8 | 08 | 02 | 5,200 psi @ 72° F | 5,200 psi @ 300° F | 000000000 | 00000 |
| 1/2 | 1/4 | 08 | 04 | 5,200 psi @ 72° F | 5,200 psi @ 300° F | 00000000 | 00000 |
| 1/2 | 3/8 | 08 | 06 | 5,200 psi @ 72° F | 5,200 psi @ 300° F | 00000000 | 00000 |
| 3/4 | 1/4 | 12 | 04 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 000000000 | 00000 |
| 3/4 | 3/8 | 12 | 06 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 000000000 | 00000 |
| 3/4 | 1/2 | 12 | 08 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 000000000 | 00000 |
| 1 | 1/4 | 16 | 04 | 4,400 psi @ 72° F | 4,400 psi @ 300° F | 000000000 | 00000 |
| 1 | 1/2 | 16 | 08 | 4,400 psi @ 72° F | 4,400 psi @ 300° F | 000000000 | 00000 |
| 1 | 3/4 | 16 | 12 | 4,400 psi @ 72° F | 4,400 psi @ 300° F | 000000000 | 00000 |
Bushing Straight Reducing Adapters
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: See table
Pipe Size | Dash Size | 316 Stainless Steel | ||||||
|---|---|---|---|---|---|---|---|---|
| (A) | (B) | (A) | (B) | Max. Pressure | Max. Steam Pressure | Specifications Met | Each | |
NPT Male × NPT Female | ||||||||
| 1/8 | 1/16 | 02 | __ | 6,400 psi @ 72° F | 6,400 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 1/4 | 1/16 | 04 | __ | 7,500 psi @ 72° F | 7,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 1/4 | 1/8 | 04 | 02 | 6,000 psi @ 72° F | 6,000 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 3/8 | 1/8 | 06 | 02 | 6,400 psi @ 72° F | 6,400 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 3/8 | 1/4 | 06 | 04 | 5,300 psi @ 72° F | 5,300 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 1/2 | 1/8 | 08 | 02 | 6,600 psi @ 72° F | 6,600 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 1/2 | 1/4 | 08 | 04 | 6,400 psi @ 72° F | 6,400 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 1/2 | 3/8 | 08 | 06 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 3/4 | 1/4 | 12 | 04 | 6,400 psi @ 72° F | 6,400 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 3/4 | 3/8 | 12 | 06 | 5,300 psi @ 72° F | 5,300 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 3/4 | 1/2 | 12 | 08 | 4,900 psi @ 72° F | 4,900 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 1 | 1/4 | 16 | 04 | 5,300 psi @ 72° F | 5,300 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 1 | 3/8 | 16 | 06 | 5,300 psi @ 72° F | 5,300 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 1 | 1/2 | 16 | 08 | 4,900 psi @ 72° F | 4,900 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 1 | 3/4 | 16 | 12 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 1 1/4 | 1 | 20 | 16 | 4,400 psi @ 72° F | 4,400 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 1 1/2 | 1/2 | 24 | 08 | 4,900 psi @ 72° F | 4,900 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A182, ASTM A276, ASTM A479 | 000000000 | 000000 |
| 1 1/2 | 1 | 24 | 16 | 4,400 psi @ 72° F | 4,400 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 1 1/2 | 1 1/4 | 24 | 20 | 5,000 psi @ 72° F | 5,000 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 000000 |
| 2 | 1/2 | 32 | 08 | 4,900 psi @ 72° F | 4,900 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A182, ASTM A276, ASTM A479 | 000000000 | 000000 |
| 2 | 3/4 | 32 | 12 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A182, ASTM A276, ASTM A479 | 000000000 | 000000 |
| 2 | 1 | 32 | 16 | 3,900 psi @ 72° F | 3,900 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 000000 |
| 2 | 1 1/2 | 32 | 24 | 3,900 psi @ 72° F | 3,900 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 000000 |
Straight Reducers, Female
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3
Pipe Size | Dash Size | 316 Stainless Steel | |||||
|---|---|---|---|---|---|---|---|
| (A) | (B) | (A) | (B) | Max. Pressure | Max. Steam Pressure | Each | |
NPT Female | |||||||
| 1/8 | 1/16 | 02 | __ | 6,400 psi @ 72° F | 6,400 psi @ 300° F | 000000000 | 000000 |
| 1/4 | 1/8 | 04 | 02 | 6,600 psi @ 72° F | 6,600 psi @ 300° F | 000000000 | 00000 |
| 3/8 | 1/8 | 06 | 02 | 5,300 psi @ 72° F | 5,300 psi @ 300° F | 000000000 | 00000 |
| 3/8 | 1/4 | 06 | 04 | 5,300 psi @ 72° F | 5,300 psi @ 300° F | 00000000 | 00000 |
| 1/2 | 1/8 | 08 | 02 | 5,200 psi @ 72° F | 5,200 psi @ 300° F | 000000000 | 00000 |
| 1/2 | 1/4 | 08 | 04 | 5,200 psi @ 72° F | 5,200 psi @ 300° F | 00000000 | 00000 |
| 1/2 | 3/8 | 08 | 06 | 5,200 psi @ 72° F | 5,200 psi @ 300° F | 00000000 | 00000 |
| 3/4 | 1/4 | 12 | 04 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 000000000 | 00000 |
| 3/4 | 1/2 | 12 | 08 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 000000000 | 00000 |
| 1 | 1/2 | 16 | 08 | 4,400 psi @ 72° F | 4,400 psi @ 300° F | 000000000 | 00000 |
| 1 | 3/4 | 16 | 12 | 4,400 psi @ 72° F | 4,400 psi @ 300° F | 000000000 | 00000 |
Straight Reducers, Male
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3
Pipe Size | Dash Size | 316 Stainless Steel | |||||
|---|---|---|---|---|---|---|---|
| (A) | (B) | (A) | (B) | Max. Pressure | Max. Steam Pressure | Each | |
NPT Male | |||||||
| 1/8 | 1/16 | 02 | __ | 9,100 psi @ 72° F | 9,100 psi @ 300° F | 000000000 | 000000 |
| 1/4 | 1/8 | 04 | 02 | 7,500 psi @ 72° F | 7,500 psi @ 300° F | 00000000 | 00000 |
| 3/8 | 1/8 | 06 | 02 | 7,200 psi @ 72° F | 7,200 psi @ 300° F | 00000000 | 00000 |
| 3/8 | 1/4 | 06 | 04 | 7,200 psi @ 72° F | 7,200 psi @ 300° F | 000000000 | 00000 |
| 1/2 | 1/8 | 08 | 02 | 6,600 psi @ 72° F | 6,600 psi @ 300° F | 00000000 | 00000 |
| 1/2 | 1/4 | 08 | 04 | 6,600 psi @ 72° F | 6,600 psi @ 300° F | 000000000 | 00000 |
| 1/2 | 3/8 | 08 | 06 | 6,600 psi @ 72° F | 6,600 psi @ 300° F | 000000000 | 00000 |
| 3/4 | 1/4 | 12 | 04 | 7,300 psi @ 72° F | 7,300 psi @ 300° F | 000000000 | 00000 |
| 3/4 | 1/2 | 12 | 08 | 7,300 psi @ 72° F | 7,300 psi @ 300° F | 000000000 | 00000 |
| 1 | 1/2 | 16 | 08 | 5,300 psi @ 72° F | 5,300 psi @ 300° F | 000000000 | 00000 |
| 1 | 3/4 | 16 | 12 | 5,300 psi @ 72° F | 5,300 psi @ 300° F | 000000000 | 00000 |
90° Elbow Connectors, Female
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3
316 Stainless Steel | |||||
|---|---|---|---|---|---|
| Pipe Size | Dash Size | Max. Pressure | Max. Steam Pressure | Each | |
NPT Female | |||||
| 1/16 | __ | 7,000 psi @ 72° F | 7,000 psi @ 300° F | 000000000 | 000000 |
| 1/8 | 02 | 5,500 psi @ 72° F | 5,500 psi @ 300° F | 00000000 | 00000 |
| 1/4 | 04 | 5,600 psi @ 72° F | 5,600 psi @ 300° F | 000000000 | 00000 |
| 3/8 | 06 | 5,000 psi @ 72° F | 5,000 psi @ 300° F | 00000000 | 00000 |
| 1/2 | 08 | 4,500 psi @ 72° F | 4,500 psi @ 300° F | 000000000 | 00000 |
| 3/4 | 12 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 000000000 | 00000 |
| 1 | 16 | 4,400 psi @ 72° F | 4,400 psi @ 300° F | 000000000 | 00000 |
90° Elbow Connectors, Male
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: ASME B31.3, ASME B1.20.1, ASME B31.1
316 Stainless Steel | |||||
|---|---|---|---|---|---|
| Pipe Size | Dash Size | Max. Pressure | Max. Steam Pressure | Each | |
NPT Male | |||||
| 1/8 | 02 | 9,100 psi @ 72° F | 9,100 psi @ 300° F | 00000000 | 000000 |
| 1/4 | 04 | 7,500 psi @ 72° F | 7,500 psi @ 300° F | 00000000 | 00000 |
| 3/8 | 06 | 7,200 psi @ 72° F | 7,200 psi @ 300° F | 000000000 | 00000 |
| 1/2 | 08 | 5,800 psi @ 72° F | 5,800 psi @ 300° F | 000000000 | 00000 |
| 3/4 | 12 | 6,400 psi @ 72° F | 6,400 psi @ 300° F | 000000000 | 000000 |
| 1 | 16 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 000000000 | 000000 |
90° Elbow Adapters
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3
316 Stainless Steel | |||||
|---|---|---|---|---|---|
| Pipe Size | Dash Size | Max. Pressure | Max. Steam Pressure | Each | |
NPT Female × NPT Male | |||||
| 1/16 | __ | 7,000 psi @ 72° F | 7,000 psi @ 300° F | 000000000 | 000000 |
| 1/8 | 02 | 5,500 psi @ 72° F | 5,500 psi @ 300° F | 00000000 | 00000 |
| 1/4 | 04 | 5,600 psi @ 72° F | 5,600 psi @ 300° F | 000000000 | 00000 |
| 3/8 | 06 | 5,000 psi @ 72° F | 5,000 psi @ 300° F | 00000000 | 00000 |
| 1/2 | 08 | 4,500 psi @ 72° F | 4,500 psi @ 300° F | 000000000 | 00000 |
| 3/4 | 12 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 000000000 | 00000 |
| 1 | 16 | 4,400 psi @ 72° F | 4,400 psi @ 300° F | 000000000 | 000000 |
90° Elbow Reducing Adapters
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: See table
Pipe Size | Dash Size | 316 Stainless Steel | ||||||
|---|---|---|---|---|---|---|---|---|
| (A) | (B) | (A) | (B) | Max. Pressure | Max. Steam Pressure | Specifications Met | Each | |
NPT Female × NPT Male | ||||||||
| 1/8 | 1/16 | 02 | __ | 6,500 psi @ 72° F | 6,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 000000 |
| 1/8 | 1/4 | 2 | 4 | 5,500 psi @ 72° F | 5,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 1/8 | 3/8 | 2 | 6 | 5,500 psi @ 72° F | 5,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 00000 |
| 1/8 | 1/2 | 2 | 8 | 5,500 psi @ 72° F | 5,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 000000 |
| 1/4 | 1/8 | 04 | 02 | 6,600 psi @ 72° F | 6,600 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A182, ASTM A276, ASTM A479 | 000000000 | 00000 |
| 1/4 | 3/8 | 4 | 6 | 5,600 psi @ 72° F | 5,600 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 000000 |
| 1/4 | 1/2 | 4 | 8 | 5,600 psi @ 72° F | 5,600 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 000000 |
| 3/8 | 1/4 | 06 | 04 | 5,300 psi @ 72° F | 5,300 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A182, ASTM A276, ASTM A479 | 000000000 | 00000 |
| 3/8 | 1/2 | 6 | 8 | 5,000 psi @ 72° F | 5,000 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 000000 |
| 1/2 | 1/4 | 08 | 04 | 4,900 psi @ 72° F | 4,900 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A182, ASTM A276, ASTM A479 | 000000000 | 00000 |
| 1/2 | 3/8 | 08 | 06 | 4,900 psi @ 72° F | 4,900 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3, ASTM A182, ASTM A276, ASTM A479 | 000000000 | 00000 |
| 1/2 | 3/4 | 08 | 12 | 4,500 psi @ 72° F | 4,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 000000 |
| 3/4 | 1 | 12 | 16 | 3,500 psi @ 72° F | 3,500 psi @ 300° F | ASME B1.20.1, ASME B31.1, ASME B31.3 | 000000000 | 000000 |
45° Elbow Adapters
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3
316 Stainless Steel | |||||
|---|---|---|---|---|---|
| Pipe Size | Dash Size | Max. Pressure | Max. Steam Pressure | Each | |
NPT Female × NPT Male | |||||
| 1/8 | 02 | 5,500 psi @ 72° F | 5,500 psi @ 300° F | 000000000 | 000000 |
| 1/4 | 04 | 5,600 psi @ 72° F | 5,600 psi @ 300° F | 000000000 | 00000 |
| 3/8 | 06 | 5,000 psi @ 72° F | 5,000 psi @ 300° F | 000000000 | 00000 |
| 1/2 | 08 | 4,500 psi @ 72° F | 4,500 psi @ 300° F | 000000000 | 000000 |
Tee Connectors, Female
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3
316 Stainless Steel | |||||
|---|---|---|---|---|---|
| Pipe Size | Dash Size | Max. Pressure | Max. Steam Pressure | Each | |
NPT Female | |||||
| 1/16 | __ | 7,000 psi @ 72° F | 7,000 psi @ 300° F | 000000000 | 000000 |
| 1/8 | 02 | 5,500 psi @ 72° F | 5,500 psi @ 300° F | 00000000 | 00000 |
| 1/4 | 04 | 5,600 psi @ 72° F | 5,600 psi @ 300° F | 000000000 | 00000 |
| 3/8 | 06 | 5,000 psi @ 72° F | 5,000 psi @ 300° F | 00000000 | 00000 |
| 1/2 | 08 | 4,500 psi @ 72° F | 4,500 psi @ 300° F | 000000000 | 000000 |
| 3/4 | 12 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 000000000 | 00000 |
| 1 | 16 | 5,300 psi @ 72° F | 5,300 psi @ 300° F | 00000000 | 000000 |
Tee Connectors, Male
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3
316 Stainless Steel | |||||
|---|---|---|---|---|---|
| Pipe Size | Dash Size | Max. Pressure | Max. Steam Pressure | Each | |
NPT Male | |||||
| 1/8 | 02 | 9,700 psi @ 72° F | 9,700 psi @ 300° F | 000000000 | 000000 |
| 1/4 | 04 | 8,000 psi @ 72° F | 8,000 psi @ 300° F | 000000000 | 00000 |
| 3/8 | 06 | 7,600 psi @ 72° F | 7,600 psi @ 300° F | 000000000 | 00000 |
| 1/2 | 08 | 6,200 psi @ 72° F | 6,200 psi @ 300° F | 000000000 | 00000 |
| 3/4 | 12 | 6,400 psi @ 72° F | 6,400 psi @ 300° F | 000000000 | 000000 |
| 1 | 16 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 000000000 | 000000 |
Inline Tee Adapters
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3
316 Stainless Steel | |||||
|---|---|---|---|---|---|
| Pipe Size | Dash Size | Max. Pressure | Max. Steam Pressure | Each | |
NPT Female × NPT Male | |||||
| 1/8 | 02 | 5,500 psi @ 72° F | 5,500 psi @ 300° F | 000000000 | 000000 |
| 1/4 | 04 | 5,600 psi @ 72° F | 5,600 psi @ 300° F | 000000000 | 00000 |
| 3/8 | 06 | 5,000 psi @ 72° F | 5,000 psi @ 300° F | 000000000 | 00000 |
| 1/2 | 08 | 4,500 psi @ 72° F | 4,500 psi @ 300° F | 000000000 | 000000 |
| 3/4 | 12 | 3,500 psi @ 72° F | 3,500 psi @ 300° F | 000000000 | 000000 |
| 1 | 16 | 3,900 psi @ 72° F | 3,900 psi @ 300° F | 000000000 | 000000 |
Right-Angle Tee Adapters
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3
316 Stainless Steel | |||||
|---|---|---|---|---|---|
| Pipe Size | Dash Size | Max. Pressure | Max. Steam Pressure | Each | |
NPT Female × NPT Male | |||||
| 1/16 | __ | 7,000 psi @ 72° F | 7,000 psi @ 300° F | 000000000 | 000000 |
| 1/8 | 02 | 5,500 psi @ 72° F | 5,500 psi @ 300° F | 00000000 | 00000 |
| 1/4 | 04 | 5,600 psi @ 72° F | 5,600 psi @ 300° F | 000000000 | 00000 |
| 3/8 | 06 | 5,000 psi @ 72° F | 5,000 psi @ 300° F | 00000000 | 00000 |
| 1/2 | 08 | 4,500 psi @ 72° F | 4,500 psi @ 300° F | 000000000 | 000000 |
| 3/4 | 12 | 3,500 psi @ 72° F | 3,500 psi @ 300° F | 000000000 | 000000 |
| 1 | 16 | 3,900 psi @ 72° F | 3,900 psi @ 300° F | 000000000 | 000000 |
Cross Connectors
- For Use With: Hydraulic Fluid, Liquid Nitrogen, Natural Gas, Steam, Water
- Specifications Met: ASME B1.20.1, ASME B31.1, ASME B31.3
316 Stainless Steel | |||||
|---|---|---|---|---|---|
| Pipe Size | Dash Size | Max. Pressure | Max. Steam Pressure | Each | |
NPT Female | |||||
| 1/8 | 02 | 5,500 psi @ 72° F | 5,500 psi @ 300° F | 00000000 | 000000 |
| 1/4 | 04 | 5,600 psi @ 72° F | 5,600 psi @ 300° F | 000000000 | 00000 |
| 3/8 | 06 | 5,000 psi @ 72° F | 5,000 psi @ 300° F | 00000000 | 000000 |
| 1/2 | 08 | 4,500 psi @ 72° F | 4,500 psi @ 300° F | 000000000 | 000000 |
| 3/4 | 12 | 4,600 psi @ 72° F | 4,600 psi @ 300° F | 000000000 | 000000 |
Quick-Clamp Through-Wall Fittings for High-Vacuum Chambers
Quick-Clamp Shown Installed
- For Use With: See table
- Environment Temperature Range: 32° to 300° F
- Process Temperature Range: -325° to 995° F
- Tubing: Use with 304/304L or 316/316L stainless steel
- Specifications Met: ISO 2861
Transfer liquids and gases into high-vacuum chambers with these assembled fittings, also known as feedthroughs. Their quick-clamp (ISO-KF) connections are easier to install and remove than bolt-on flanges. This makes them a good choice for systems that need frequent cleaning, repairs, and setup changes, such as those in teaching and research labs. These fittings meet ISO 2861, which means they’re made to strict dimensional standards that ensure vacuum-tight connections. Made of stainless steel and aluminum, these fittings resist rusting. They are not for use in pressure applications.
These fittings are ready to install and include quick-clamp fittings, metal tubing, and Yor-Lok tube fittings at each end. The Yor-Lok fittings include a nut and two sleeves that grip your system’s stainless steel tubing. To complete the quick-clamp connection, you’ll need a clamp and ring (each sold separately).
Fittings
For Tube | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Flange OD | High-Vacuum Flange Size | High Vacuum Connection Type | Connection Style | OD | Wall Thick. | Lg. | Max. Vacuum | Material | Each | |
For Use With Liquid Helium, Liquid Methane, Liquid Nitrogen, Liquid Oxygen | ||||||||||
| 1.18" | 16 | ISO-KF | Yor-Lok | 1/4" | 0.028"-0.095" | 9" | 10 -8 torr @ 72° F | 304 Stainless Steel | 0000000 | 0000000 |
| 1.57" | 25 | ISO-KF | Yor-Lok | 1/4" | 0.028"-0.095" | 9" | 10 -8 torr @ 72° F | 304 Stainless Steel | 0000000 | 000000 |
| 2.16" | 40 | ISO-KF | Yor-Lok | 1/4" | 0.028"-0.095" | 9" | 10 -8 torr @ 72° F | 304 Stainless Steel | 0000000 | 000000 |
| 2.95" | 50 | ISO-KF | Yor-Lok | 1/4" | 0.028"-0.095" | 9" | 10 -8 torr @ 72° F | 304 Stainless Steel | 0000000 | 000000 |
Clamps
| For Flange OD | For High-Vacuum Flange Size | High Vacuum Connection Type | Material | Max. Vacuum | Each | |
With Wing Nut | ||||||
|---|---|---|---|---|---|---|
| 1.18" | 10, 16 | ISO-KF | Aluminum | 10 -8 torr @ 72° F | 00000000 | 00000 |
| 1.57" | 25 | ISO-KF | Aluminum | 10 -8 torr @ 72° F | 0000000 | 00000 |
| 2.16" | 40 | ISO-KF | Aluminum | 10 -8 torr @ 72° F | 0000000 | 00000 |
| 2.95" | 50 | ISO-KF | Aluminum | 10 -8 torr @ 72° F | 0000000 | 00000 |
Rings
Material | |||||||
|---|---|---|---|---|---|---|---|
| For Flange OD | For High-Vacuum Flange Size | High Vacuum Connection Type | O-Ring | Inner Ring | Max. Vacuum | Each | |
| 1.18" | 16 | ISO-KF | Viton® Fluoroelastomer Rubber | 304 Stainless Steel | 10 -8 torr @ 72° F | 00000000 | 00000 |
| 1.57" | 25 | ISO-KF | Viton® Fluoroelastomer Rubber | 304 Stainless Steel | 10 -8 torr @ 72° F | 0000000 | 00000 |
| 2.16" | 40 | ISO-KF | Viton® Fluoroelastomer Rubber | 304 Stainless Steel | 10 -8 torr @ 72° F | 0000000 | 00000 |
| 2.95" | 50 | ISO-KF | Viton® Fluoroelastomer Rubber | 304 Stainless Steel | 10 -8 torr @ 72° F | 0000000 | 00000 |
Flanged Through-Wall Fittings for Ultra-High-Vacuum Chambers
Shown Installed
- For Use With: See table
- Environment Temperature Range: 32° to 300° F
- Process Temperature Range: -325° to 995° F
- Tubing: Use with 304/304L or 316/316L stainless steel
Bolt these fittings onto your ultra-high-vacuum chamber to transfer liquids and gases inside. Also known as feedthroughs, they come assembled with a flanged (CF) fitting, metal tubing, and two Yor-Lok tube fittings. Their bolt-together connection forms the tightest seal of any fitting type, so you can use them in semiconductor manufacturing, surface analysis experiments, and even research with particle accelerators. Made of stainless steel and copper, these fittings resist rusting. These fittings are not for use in pressure applications.
To complete the flanged connection, you’ll need a gasket and bolt kit (each sold separately). The Yor-Lok fittings on each end include a nut and two sleeves that grip your system’s stainless steel tubing.
Fittings
Bolt Holes | For Tube | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Flange OD | High-Vacuum Flange Size | High Vacuum Connection Type | Bolt Circle Dia. | Dia. | No. of | Connection Style | OD | Wall Thick. | Lg. | Max. Vacuum | Material | Each | |
For Use With Liquid Helium, Liquid Methane, Liquid Nitrogen, Liquid Oxygen | |||||||||||||
| 1 21/64" | 16 | CF | 1 1/16" | 11/64" | 6 | Yor-Lok | 1/4" | 0.028"-0.095" | 9" | 10 -13 torr @ 72° F | 304 Stainless Steel | 0000000 | 0000000 |
| 2 3/4" | 40 | CF | 2 5/16" | 17/64" | 6 | Yor-Lok | 1/4" | 0.028"-0.095" | 9" | 10 -13 torr @ 72° F | 304 Stainless Steel | 0000000 | 000000 |
