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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About Plastic and Rubber Tubing
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About Pressure Reductions for High-Temperature Braided Hose
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About Hose
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About Duct Hose
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High-Temperature Air Hose
Also known as hot air blower hose, this hose stays flexible and strong as it transfers compressed air at temperatures above 300° F. It’s often used to pressurize storage tanks, where hot, compressed air can prevent dry bulk materials from clogging and sticking during unloading. If used in a grounded system, it has a steel wire that gives electrostatic buildup a path to escape. Along with synthetic fabric, this steel wire reinforces the hose, so it keeps its shape under pressure. Made of EPDM, this hose resists UV rays and ozone and can be used outdoors.
Food industry hose is FDA Compliant, so it's safe for use with dry food.

- Temperature Range: -40° to 400° F
- Maximum Vacuum: 29" of Hg @ 72° F
- Material: EPDM Rubber
- Color: Black with Yellow Stripe
Per Ft. | |||||||
---|---|---|---|---|---|---|---|
ID | OD | Bend Radius | Max. Pressure | Max. Continuous Lg., ft. | 1-99 | 100-Up | |
3" | 3 1/2" | 7" | 100 psi @ 72° F | 100 | 0000000 | 000000 | 000000 |

- Temperature Range: -20° to 325° F
- Maximum Vacuum: 29" of Hg @ 72° F
- Material: EPDM Rubber
- Color: Red with White Stripe
Per Ft. | ||||||||
---|---|---|---|---|---|---|---|---|
ID | OD | Bend Radius | Max. Pressure | Specifications Met | Max. Continuous Lg., ft. | 1-99 | 100-Up | |
3" | 3 1/2" | 7" | 100 psi @ 72° F | FDA Compliant 21 CFR 177.2600 | 100 | 0000000 | 000000 | 000000 |
Extreme-Temperature Air and Steam Hose with Male Threaded Fittings

- Maximum Vacuum: 29" of Hg @ 72° F
- Temperature Range: -325° to 1,200° F
- Material: 316 Stainless Steel or 321 Stainless Steel
Braided stainless steel construction gives this hose moderate flexibility and makes it tough enough to handle extreme temperatures, as well as vibration.
Single-braided hose with 304 stainless steel NPT threaded fittings have a steel hex nut.
Extreme-Temperature Air and Steam Hose with Flanges
- Temperature Range:
316 Stainless Steel Hose: -325° to 1200° F
321 Stainless Steel Hose: -20° to 950° F - Maximum Vacuum: 29" of Hg @ 72° F
- Material: 316 Stainless Steel or 321 Stainless Steel
Braided stainless steel construction gives this hose moderate flexibility and makes it tough enough to handle extreme temperatures, as well as vibration. Bolt the flanged ends to pumps and tanks. You’ll need a gasket to seal the connection. Flanges that swivel until tightened are easy to align with bolt holes.


Pipe Size | Flange OD | ID | OD | Bend Radius | Bolt Circle Dia. | No. of Bolt Holes | Max. Pressure | 12" | 18" | 24" | 30" | 36" | 42" | 48" | 60" | 72" | 96" | 120" | |
316 Stainless Steel Hose with 316 Stainless Steel Flanged Fittings | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
3 × 3 | 7 1/2" × 7 1/2" | 3" | 4" | 18" | 6" × 6" | 4 | 275 psi @ 72° F | 0000000 | |||||||||||
321 Stainless Steel Hose with Steel Flanged Fittings | |||||||||||||||||||
3 × 3 | 7 1/2" × 7 1/2" | 3" | 4" | 18" | 6" × 6" | 4 | 285 psi @ 72° F | 000000 |


Pipe Size | Flange OD | ID | OD | Bend Radius | Bolt Circle Dia. | No. of Bolt Holes | Max. Pressure | 18" | 24" | 30" | 36" | 42" | 48" | 60" | 72" | 96" | 120" | |
316 Stainless Steel Hose with 316 Stainless Steel Flanged Fittings | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
3 × 3 | 7 1/2" × 7 1/2" | 3" | 4" | 18" | 6" × 6" | 4 | 275 psi @ 72° F | 0000000 | ||||||||||
321 Stainless Steel Hose with Steel Flanged Fittings | ||||||||||||||||||
3 × 3 | 7 1/2" × 7 1/2" | 3" | 4" | 18" | 6" × 6" | 4 | 285 psi @ 72° F | 0000000 |
Extra-Flexible Extreme-Temperature Air and
Steam Hose with Male Threaded Fittings

- Temperature Range: -325° to 1,200° F
- Maximum Vacuum: 29" of Hg @ 72° F
- Material: 316 Stainless Steel or 321 Stainless Steel
Made of extra-flexible braided stainless steel, this hose allows for misalignment and is easy to bend, yet it's tough enough to handle high temperatures and vibration.
High-Vacuum Hose with Claw-Clamp Fittings

More flexible than rigid stainless steel tubing, this hose allows you to link high-vacuum components that are misaligned. Also known as bellows. The ribbed design absorbs vibration so it doesn't transfer from one component to the next. Equipped with a claw-clamp (ISO-K) fitting on each end, this hose connects to large components with fittings starting at trade number 63. Each fitting on the hose requires four claw clamps and a ring (both sold separately) to connect. Not for use in pressure applications.
Double-claw clamps attach to the grooves on the fittings.
Single-claw clamps have a clamp on one end and an exposed bolt on the other. Thread the bolt-end directly into the body of pumps, valves, or other high-vacuum components.

- Temperature Range: Not Rated
- Material:
6" Lengths: 321 Stainless Steel
Other Lengths: 304 Stainless Steel - Fitting Material: 304 Stainless Steel
For Tube OD | Flange OD | High-Vacuum Flange Size | ID | OD | Wall Thickness | Bend Radius | High Vacuum Connection Type | Max. Vacuum | Each | |
6" Lg. | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
3" | 4.33" | 80 | 3" | 3 15/16" | 0.008" | 3" | ISO-K | 10 -8 torr @ 72° F | 0000000 | 0000000 |
12" Lg. | ||||||||||
3" | 4.33" | 80 | 3" | 3 7/8" | 0.008" | 6" | ISO-K | 10 -8 torr @ 72° F | 0000000 | 000000 |
24" Lg. | ||||||||||
3" | 4.33" | 80 | 3" | 3 7/8" | 0.008" | 6" | ISO-K | 10 -8 torr @ 72° F | 0000000 | 000000 |
36" Lg. | ||||||||||
3" | 4.33" | 80 | 3" | 3 7/8" | 0.008" | 6" | ISO-K | 10 -8 torr @ 72° F | 0000000 | 000000 |
39" Lg. | ||||||||||
3" | 4.33" | 80 | 3" | 3 7/8" | 0.008" | 6" | ISO-K | 10 -8 torr @ 72° F | 0000000 | 000000 |



Material | |||||||||
---|---|---|---|---|---|---|---|---|---|
For Tube OD | For Flange OD | For High-Vacuum Flange Size | High Vacuum Connection Type | O-Ring | Inner Ring | Max. Vacuum | Max. Temp., °F | Each | |
3" | 4.33" | 80 | ISO-K | Viton® Fluoroelastomer Rubber | 304 Stainless Steel | 10 -8 torr @ 72° F | 400° | 000000 | 000000 |
Metal Barbed Hose Fittings for Air and Water
Slide the barbed end into rubber hose and secure with the appropriate clamp or crimp-on hose ferrule.
Brass fittings are softer than other metal fittings, so they’re easier to thread together. Plain brass fittings have good corrosion resistance.Bronze fittings have better corrosion resistance and are stronger than brass and aluminum fittings.Aluminum fittings are lighter in weight than other metal fittings. They have good corrosion resistance.
Stainless steel fittings have very good corrosion resistance. 303 stainless steel fittings won’t rust when exposed to water, making them good for areas that require frequent cleanings. Fittings that swivel until tightened rotate 360° for easy installation. Fittings with a threaded end are also known as hose nipples.
Hose connectors are also known as hose menders and splicers. Use them to connect lengths of hose or to repair damaged hose.
Female NPSM (National Pipe Straight Mechanical) threads are compatible with male NPT and NPTF threads. Male NPSM threads are compatible with female NPSH threads.

- Maximum Pressure: See table
- Maximum Vacuum: See table
- Temperature Range: See table
- Attachment Type: See table
- Specifications Met: See table
For Hose ID | Pipe Size | Max. Pressure | Max. Vacuum | Temperature Range, °F | Attachment Type | Specifications Met | Pkg. Qty. | Pkg. | |
Brass | |||||||||
---|---|---|---|---|---|---|---|---|---|
3" | 2 | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 0000000 |
3" | 3 | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 000000 |
Bronze | |||||||||
3" | 3 | 100 psi @ 72° F | Not Rated | 32° to 212° | Worm-Drive Clamp | ASTM B584, UL 1121 | 1 | 0000000 | 00000 |
303 Stainless Steel | |||||||||
3" | 2 | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 000000 |
3" | 3 | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | __ | 1 | 00000000 | 000000 |

- Maximum Pressure: See table
- Temperature Range: Brass Fittings: -40° to 160° F; Aluminum Fittings: -20° to 160° F
- Attachment Type: Use Band-and-Buckle Clamps
- Specifications Met: Brass Fittings: SAE J476
For Hose ID | Pipe Size | Max. Pressure | Pkg. Qty. | Pkg. | |
Aluminum | |||||
---|---|---|---|---|---|
3" | 3 | 50 psi @ 72° F | 1 | 0000000 | 000000 |

- Maximum Pressure: See table
- Maximum Vacuum: See table
- Temperature Range: See table
- Attachment Type: See table
- Specifications Met: See table
For Hose ID | Pipe Size | Max. Pressure | Max. Vacuum | Temperature Range, °F | Attachment Type | Pkg. Qty. | Pkg. | |
Brass | ||||||||
---|---|---|---|---|---|---|---|---|
3" | 3 | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 0000000 |
303 Stainless Steel | ||||||||
3" | 3 | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 000000 |


UN/UNF (SAE Straight)
Male Threads with Gasket
- Maximum Pressure: See table
- Temperature Range: Brass Fittings: -40° to 160° F; Aluminum Fittings: -20° to 160° F
- Attachment Type: See table
- Specifications Met: Brass Fittings: SAE J476
For Hose ID | Pipe Size | Gasket Material | Max. Pressure | Attachment Type | Pkg. Qty. | Pkg. | |
Aluminum | |||||||
---|---|---|---|---|---|---|---|
3" | 3 | Neoprene Rubber | 50 psi @ 72° F | Band-and-Buckle Clamp | 1 | 0000000 | 000000 |

- Maximum Pressure: See table
- Maximum Vacuum: See table
- Temperature Range: See table
- Attachment Type: See table
- Specifications Met: See table
For Hose ID | Max. Pressure | Max. Vacuum | Temperature Range, °F | Attachment Type | Pkg. Qty. | Pkg. | |
Brass | |||||||
---|---|---|---|---|---|---|---|
3" | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 0000000 |
303 Stainless Steel | |||||||
3" | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 000000 |

- Maximum Pressure: See table
- Maximum Vacuum: See table
- Temperature Range: See table
- Attachment Type: See table
- Specifications Met: See table
For Hose ID | ||||||||
---|---|---|---|---|---|---|---|---|
(A) | (B) | Max. Pressure | Max. Vacuum | Temperature Range, °F | Attachment Type | Pkg. Qty. | Pkg. | |
Brass | ||||||||
3" | 2" | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 0000000 |
4" | 3" | 250 psi @ 72° F | 27 in. of Hg @ 72° F | -30° to 200° | Worm-Drive Clamp, Band-and-Buckle Clamp, Crimp-On Hose Ferrule | 1 | 00000000 | 000000 |

- Maximum Pressure: See table
- Temperature Range: Brass and Stainless Steel Fittings: -40° to 160° F; Bronze Fittings: 32° to 212° F
- Attachment Type: See table
- Specifications Met: Brass and Stainless Steel Fittings: SAE J476; Bronze Fittings: ASTM B584, UL 1121
For Hose ID | Pipe Size | Max. Pressure | Attachment Type | Pkg. Qty. | Pkg. | |
Bronze | ||||||
---|---|---|---|---|---|---|
3" | 3 | 100 psi @ 72° F | Worm-Drive Clamp | 1 | 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.
Steel fittings are stronger and more durable than other metal fittings. They should be used in noncorrosive environments. Zinc-plated steel fittings have slightly better corrosion resistance than unplated steel fittings. Aluminum fittings are lighter in weight than other metal fittings. They have good corrosion resistance. Brass fittings are softer than other metal fittings, so they’re easier to thread together. They have good corrosion resistance.
Fittings with a threaded end are also known as hose nipples.
Hose connectors are also known as hose menders and splicers. Use them to connect lengths of hose or to repair damaged hose.

- Maximum Pressure: See table
- Maximum Vacuum: See table
- Temperature Range: -20° to 200° F
- Attachment Type: Use Worm-Drive Clamps, Bolt Clamps, or Band-and-Buckle Clamps
- Specifications Met: See table
For Hose ID | Pipe Size | Body Shape | Max. Pressure | Max. Vacuum | Specifications Met | Each | |
Steel | |||||||
---|---|---|---|---|---|---|---|
3" | 2 1/2 | Round | 125 psi @ 72° F | 26 in. of Hg @ 72° F | ASME B1.20.1, ASTM A53 | 00000000 | 000000 |
3" | 4 | Round | 125 psi @ 72° F | 26 in. of Hg @ 72° F | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
Zinc-Plated Steel | |||||||
3" | 2 1/2 | Round | 125 psi @ 72° F | 26 in. of Hg @ 72° F | ASME B1.20.1, ASTM A53 | 00000000 | 00000 |
3" | 3 | Round | 125 psi @ 72° F | 26 in. of Hg @ 72° F | ASME B1.20.1, ASTM A53 | 0000000 | 00000 |
3" | 4 | Round | 125 psi @ 72° F | 26 in. of Hg @ 72° F | ASME B1.20.1, ASTM A53 | 00000000 | 000000 |
Aluminum | |||||||
3" | 3 | Round | 125 psi @ 72° F | 26 in. of Hg @ 72° F | ASME B1.20.1, ASTM B241 | 0000000 | 00000 |
Brass | |||||||
3" | 3 | Round | 125 psi @ 72° F | 26 in. of Hg @ 72° F | ASME B1.20.1, ASTM B43 | 0000000 | 000000 |

- Maximum Pressure: See table
- Maximum Vacuum: See table
- Temperature Range: See table
- Attachment Type:
For 1/2" to 2" Hose IDs: Use Band-and-Buckle Clamps
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 | Max. Vacuum | Temp. Range, °F | Specifications Met | Each | |
Zinc-Plated Steel | ||||||||
---|---|---|---|---|---|---|---|---|
3" | 3 | Round | 50 psi @ 72° F | 26 in. of Hg @ 72° F | -20° to 400° | ASTM A53 | 0000000 | 000000 |

- Maximum Pressure: See table
- Maximum Vacuum: See table
- Temperature Range: -20° to 200° F
- Attachment Type:
For 1/2" to 4" Hose IDs: Use Worm-Drive Clamps, Bolt Clamps, or Band-and-Buckle Clamps
For 6" to 8" Hose IDs: Use Band-and-Buckle Clamps - Specifications Met: See table
For Hose ID | Max. Pressure | Max. Vacuum | Specifications Met | Each | |
Zinc-Plated Steel | |||||
---|---|---|---|---|---|
3" | 125 psi @ 72° F | 26 in. of Hg @ 72° F | ASTM A53 | 00000000 | 000000 |
High-Pressure Hard Plastic Tubing for Air and Water
Excellent strength and durability allow this tubing to handle high-pressure air and water applications.
Polycarbonate tubing won’t degrade when exposed to the damaging effects of ultraviolet light. It should be used at temperatures above freezing. Tubing is clear, so you can easily monitor flow. It is rigid and does not bend.

- Rigid
- Compatible with Socket Connect Tube Fittings
- Hard (Rockwell R120)
- Temperature Range: 32° to 250°F
Soft Plastic Tubing for Air and Water

This general purpose PVC tubing is the industry standard for air and water applications. Tubing is clear, so you can easily monitor flow. It is flexible to easily bend around objects.
Masterkleer tubing is more economical than Tygon tubing.
UV-Resistant Soft Plastic and Rubber Tubing for Air and Water

This tubing won’t degrade when exposed to the damaging effects of ultraviolet light. It is opaque, so you can’t see what’s flowing through the line.
PVC plastic tubing is the most economical option.
Static-Control Soft Plastic and Rubber Tubing for Air and Water
Protect sensitive equipment with this tubing—it is specially formulated to reduce the buildup of static electricity.
PVC plastic tubing has a steel wire coil embedded into the walls to divert static without the need for grounding. It is clear, so you can easily monitor flow. Tubing is semi-flexible and is good for gradual bends.
Abrasion-Resistant Soft Rubber Tubing for Air and Water


- Flexible
- Compatible with Barbed Tube Fittings
- Soft (Durometer 45A)
- Temperature Range: -70° to 180° F
Thick, gum rubber walls give this tubing excellent abrasion resistance. It is opaque, so you can’t see what’s flowing through the line. Tubing is flexible to easily bend around objects.
High-Polish Metal Quick-Clamp Sanitary Tube Fittings

- Temperature Range: See Gaskets
The smooth finish inside these fittings makes it easy to remove product residue. Also known as aseptic and tri-clamp fittings, they connect with a gasket, a clamp, and another quick-clamp fitting for a fast and easy way to access your line. The pressure rating of the fitting will vary depending on the clamp you choose, and the temperature rating will vary based on the gasket material you choose.
304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.
Note: To complete a connection, you’ll need two quick-clamp fittings, a clamp, and a gasket (all sold separately).

- For Use With:
3-A Certified Fittings: Air, Beverage, Food, Water
All Other Fittings: Air, Water - Tubing: Use with welded 304/304L or 316/316L stainless steel that meets ASTM A269 or ASTM 270
- Specifications Met: See table
Fittings with barbed hose end connect flexible hose or tubing to your system. Secure with a hose clamp (sold separately).

Buna-N gaskets are oil resistant. EPDM gaskets resist water and steam and work well in humid environments. Silicone gaskets withstand high temperatures. Fluoroelastomer gaskets stand up to fuel, oil, and acid condensates. PTFE gaskets withstand harsh chemicals, with the exception of molten alkali metal and elemental fluorine.
For Tube OD | ID | OD | Thick. | Temp. Range, °F | Color | Specifications Met | Each | |
Buna-N Rubber | ||||||||
---|---|---|---|---|---|---|---|---|
3" | 2.900" | 3.580" | 0.203" | -30° to 200° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 00000 |
4" | 3.870" | 4.680" | 0.203" | -30° to 200° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
EPDM Rubber | ||||||||
3" | 2.900" | 3.580" | 0.203" | -20° to 300° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
4" | 3.870" | 4.680" | 0.203" | -20° to 300° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
Silicone Rubber | ||||||||
3" | 2.900" | 3.580" | 0.203" | -40° to 450° | Clear | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
4" | 3.870" | 4.680" | 0.203" | -40° to 450° | Clear | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
Fluoroelastomer Rubber | ||||||||
3" | 2.900" | 3.580" | 0.203" | -15° to 400° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
4" | 3.870" | 4.680" | 0.203" | -15° to 400° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
PTFE Plastic | ||||||||
3" | 2.900" | 3.580" | 0.18" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 0000 |
4" | 3.870" | 4.680" | 0.18" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 0000 |

Flange OD | |||||||
---|---|---|---|---|---|---|---|
For Tube OD | Extra-Support Connection | Standard Connection | Wall Thick. | Material | For Tube Specifications Met | Each | |
3" | 3.87" | 3.579" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 0000000 | 0000000 |

Flange OD | |||||||
---|---|---|---|---|---|---|---|
For Tube OD | Extra-Support Connection | Standard Connection | Wall Thick. | Material | For Tube Specifications Met | Each | |
3" | 3.87" | 3.579" | 0.065" | 316 Stainless Steel | ASTM A269, ASTM A270 | 0000000 | 0000000 |
Extra-High-Polish Metal Quick-Clamp Sanitary Tube Fittings

- For Use With: Air, Beverage, Dairy, Deionized Water, Food, Pharmaceuticals, Water
- Temperature Range: See Gaskets
- Tubing:
Fittings with 700 psi @ 72° F max. pressure: Use with 316/316L stainless steel that meets ASTM A269 or ASTM A270
Fittings with all other max. pressures: Use with 316/316L stainless steel that meets ASTM A249, ASTM A269, or ASTM A270
Gaskets: Use with 304/304L and 316/316L stainless steel - Specifications Met: See table
- Certification: Material Certificate with Traceable Lot Number and Test Report
Polished to a 20 Ra finish, these fittings have an extra-smooth interior that prevents product buildup and inhibits bacteria growth. Use them in pharmaceutical and bioprocessing applications. Also known as tri-clamp fittings, they connect with a clamp, a gasket, and another quick-clamp fitting for a fast and easy way to access your line. Fittings are 316 stainless steel for excellent corrosion resistance.
Fittings with barbed hose end connect flexible hose or tubing to your system. Secure with a hose clamp (sold separately).
The pressure rating of the fitting will depend on the clamp you choose.
The temperature rating of the fitting will vary depending on the gasket material you choose.
Note: To complete a connection, you’ll need two quick-clamp fittings, a clamp, and a gasket (all sold separately).

For Tube OD | Flange OD | For Hose ID | Length | Material | Max. Pressure | Specifications Met | Each | |
3" | 3.579" | 3" | 3 3/32" | 316/316L Stainless Steel | 200 psi @ 72° F | ASME BPE | 00000000 | 0000000 |

For Tube OD | For Flange OD | Max. Pressure | For Tube Specifications Met | Each | |
3" | 3.579" | 350 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 000000 |


For Tube OD | For Flange OD | Max. Pressure | For Tube Specifications Met | Each | |
3" | 3.579" | 350 psi @ 72° F | ASTM A269, ASTM A270 | 0000000 | 000000 |

For Tube OD | For Flange OD | Bolt Material | Max. Pressure | For Tube Specifications Met | Each | |
3" | 3.579" | 304 Stainless Steel | 1,000 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 000000 |

For Tube OD | For Flange OD | Max. Pressure | For Tube Specifications Met | Specifications Met | Each | |
3" | 3.579" | 350 psi @ 72° F | ASTM A269, ASTM A270 | ASME BPE | 00000000 | 000000 |

For Tube OD | For Flange OD | Max. Pressure | Each | |
3" | 3.579" | 580 psi @ 72° F | 0000000 | 000000 |

For Tube OD | For Flange OD | Max. Pressure | Each | |
3" | 3.579" | 580 psi @ 72° F | 0000000 | 000000 |

For Tube OD | For Flange OD | Bolt Material | Max. Pressure | Specifications Met | Each | |
3" | 3.579" | 316 Stainless Steel | 1,300 psi @ 72° F | ASME BPVC.VIII | 0000000 | 0000000 |

For Tube OD | For Flange OD | Max. Pressure | Each | |
3" | 3.579" | 580 psi @ 72° F | 0000000 | 000000 |

For Tube OD | For Flange OD | Max. Pressure | For Tube Specifications Met | Each | |
3" | 3.579" | 150 psi @ 72° F | ASTM A269, ASTM A270 | 00000000 | 000000 |

For Tube OD | ID | OD | Thick. | Temp. Range, °F | Color | Specifications Met | Each | |
Buna-N Rubber | ||||||||
---|---|---|---|---|---|---|---|---|
3" | 2.900" | 3.580" | 0.203" | -30° to 200° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 00000 |
EPDM Rubber | ||||||||
3" | 2.900" | 3.580" | 0.203" | -20° to 300° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
Silicone Rubber | ||||||||
3" | 2.900" | 3.580" | 0.203" | -40° to 450° | Clear | 3-A Certified 18-03, FDA Compliant 21 CFR 177.1550, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
Fluoroelastomer Rubber | ||||||||
3" | 2.900" | 3.580" | 0.203" | -15° to 400° | Black | 3-A Certified 18-03, FDA Compliant 21 CFR 177.2600 | 0000000 | 0000 |
PTFE Plastic | ||||||||
3" | 2.900" | 3.580" | 0.18" | -100° to 500° | White | 3-A Certified 20-27, FDA Compliant 21 CFR 177.1550 | 00000000 | 0000 |
Butt-Weld Fittings for Stainless Steel Tubing
- For Use With: See table
- Temperature Range: See table
- Tubing:
304 Stainless Steel: Use with 304/304L stainless steel that meets ASTM A213, ASTM A269, or ASTM A270, except DIN EN 10357 fittings with only ASTM A269 or ASTM A270
316 Stainless Steel: Use with 316/316L stainless steel that meets ASTM A213, ASTM A269, or ASTM A270, except ASME BPE and DIN EN 10357 fittings with only ASTM A269 or ASTM A270 - Specifications Met: See table
Weld these fittings to tubing for a permanent, flush connection that permits smooth flow through a line.
316 stainless steel fittings have excellent corrosion resistance.

Fittings with barbed hose end connect to hose with a hose clamp (sold separately).
316/316L Stainless Steel | ||||||||
---|---|---|---|---|---|---|---|---|
For Tube OD | For Hose ID | Max. Pressure | Max. Vacuum | Temp. Range | Wall Thick. | For Use With | Each | |
Dull | ||||||||
3" | 3" | Not Rated | Not Rated | Not Rated | 0.065" | Air, Food, Water | 000000000 | 000000 |
Crush-Resistant Duct Hose for Air

- Flexible
- Compatible Clamps: Worm-Drive Clamps
- Color: Blue
- Temperature Range: -40° to 225° F
Step on this polypropylene hose and the flexible plastic spiral will pop back up unharmed.
Spiral | Per Ft. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
ID | OD | Bend Radius | Compresses To | Max. Pressure | Material Thick. | Interior Surface Texture | Direction | Material | Max. Continuous Lg., ft. | 1-49 | 50-Up | |
Polypropylene | ||||||||||||
3" | 3 3/8" | 4 1/2" | 45% | 8 psi @ 72° F | 0.011" | Ribbed | Left Hand | Plastic | 50 | 0000000 | 00000 | 00000 |
Heat-Reflective Duct Hose for Air

- Flexible
- Compatible Clamps: Worm-Drive and Quick-Release Clamps
- Color: Silver
- Temperature Range: -65° to 625° F
A metalized polyester cover reflects heat so the temperature inside the hose won't rise. Hose has a smooth interior for unrestricted flow.
Spiral | Per Ft. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID | OD | Bend Radius | Compresses To | Max. Vacuum | Max. Pressure | Material Thick. | Interior Surface Texture | Direction | Material | Max. Continuous Lg., ft. | 1-11 | 12-Up | |
Fiberglass Hose with Metalized Polyester Cover | |||||||||||||
3" | 3 1/8" | 2 1/2" | 25% | 29 in. of Hg @ 72° F | 30 psi @ 72° F | 0.027" | Smooth | Right Hand | Metal | 12 | 0000000 | 000000 | 000000 |
Bend-and-Stay Metal Duct Hose for Air

- Very Flexible
- Compatible Clamps: Worm-Drive Clamps
- Temperature Range: -100° to 435° F
Unlike fabric duct hose, this lightweight aluminum hose can bend around corners and hold its shape. Hose is not for continuous flexing. The hose may need support.
ID | OD | Bend Radius | Compresses To | Material Thick. | Interior Surface Texture | Lg., ft. | Each | |
Aluminum | ||||||||
---|---|---|---|---|---|---|---|---|
3" | 3 1/16" | 4 1/2" | 30% | 0.005" | Ribbed | 8 | 00000000 | 00000 |
Easy-Store Duct Hose for Air
- Very Flexible
- Compatible Clamps: Worm-Drive Clamps
- Color: Silver
- Temperature Range: 0° to 200° F
The most compressible hose we offer, this duct hose collapses to 5% of its length for easy storage.

Spiral | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
ID | OD | Bend Radius | Compresses To | Material Thick. | Interior Surface Texture | Direction | Material | Specifications Met | Lg., ft. | Each | |
Polyester Hose with Metalized Film Cover | |||||||||||
3" | 3 3/8" | 3" | 5% | 0.001" | Ribbed | Left Hand | Metal | NFPA 90A, NFPA 90B, UL 181 Class 1 | 25 | 00000000 | 000000 |

Slide these connectors into the end of your hose and secure with a clamp to create longer lengths.
For Hose ID | ID | OD | Lg. | Specifications Met | Each | |
Galvanized Steel | ||||||
---|---|---|---|---|---|---|
3" | 2 31/32" | 3" | 5 3/8" | ASTM A653-07-CS Type B | 00000000 | 00000 |

Slide these connectors into the end of your hose and secure with a clamp to create longer lengths.
For Hose ID | ID | OD | |||||||
---|---|---|---|---|---|---|---|---|---|
(A) | (B) | A | B | A | B | Lg. | Specifications Met | Each | |
Galvanized Steel | |||||||||
4" | 3" | 3 31/32" | 2 31/32" | 4" | 3" | 6" | ASTM A653-07-CS Type B | 00000000 | 000000 |