Duct for Liquids | McMaster-Carr

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About Duct Hose

Flexible
Color: White
Temperature Range: 15° to 125° F

A smooth interior allows for unrestricted flow and makes this hose easy to clean. Hose is for use with water.

Duct Hose

								Spiral
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Max. Continuous Lg., ft.		Per Ft.
Per Foot
PVC
1"	1 1/4"	3"	50%	29 in. of Hg @ 72° F	37 psi @ 72° F	0.04"	Smooth	Right Hand	Plastic	100	0000000	00000
1 1/4"	1 1/2"	4"	50%	29 in. of Hg @ 72° F	37 psi @ 72° F	0.055"	Smooth	Right Hand	Plastic	100	0000000	0000
1 1/2"	1 13/16"	4"	50%	29 in. of Hg @ 72° F	34 psi @ 72° F	0.055"	Smooth	Right Hand	Plastic	100	0000000	0000
2"	2 3/8"	6"	50%	29 in. of Hg @ 72° F	30 psi @ 72° F	0.055"	Smooth	Right Hand	Plastic	100	0000000	0000
2 1/2"	2 7/8"	7"	50%	29 in. of Hg @ 72° F	30 psi @ 72° F	0.063"	Smooth	Right Hand	Plastic	100	0000000	0000
3"	3 7/16"	8"	50%	29 in. of Hg @ 72° F	30 psi @ 72° F	0.071"	Smooth	Right Hand	Plastic	100	0000000	00000
4"	4 9/16"	14"	50%	15 in. of Hg @ 72° F	27 psi @ 72° F	0.075"	Smooth	Right Hand	Plastic	100	0000000	00000
6"	6 5/8"	25"	50%	10 in. of Hg @ 72° F	20 psi @ 72° F	0.102"	Smooth	Right Hand	Plastic	30	0000000	00000
												Each
Full Coil
PVC
1"	1 1/4"	3"	50%	29 in. of Hg @ 72° F	37 psi @ 72° F	0.04"	Smooth	Right Hand	Plastic	100	00000000	000000
1 1/4"	1 1/2"	4"	50%	29 in. of Hg @ 72° F	37 psi @ 72° F	0.055"	Smooth	Right Hand	Plastic	100	00000000	000000
1 1/2"	1 13/16"	4"	50%	29 in. of Hg @ 72° F	34 psi @ 72° F	0.055"	Smooth	Right Hand	Plastic	100	00000000	000000
2"	2 3/8"	6"	50%	29 in. of Hg @ 72° F	30 psi @ 72° F	0.055"	Smooth	Right Hand	Plastic	100	00000000	000000
2 1/2"	2 7/8"	7"	50%	29 in. of Hg @ 72° F	30 psi @ 72° F	0.063"	Smooth	Right Hand	Plastic	100	00000000	000000
3"	3 7/16"	8"	50%	29 in. of Hg @ 72° F	30 psi @ 72° F	0.071"	Smooth	Right Hand	Plastic	100	00000000	00000000
4"	4 9/16"	14"	50%	15 in. of Hg @ 72° F	27 psi @ 72° F	0.075"	Smooth	Right Hand	Plastic	100	00000000	00000000
6"	6 5/8"	25"	50%	10 in. of Hg @ 72° F	20 psi @ 72° F	0.102"	Smooth	Right Hand	Plastic	30	00000000	000000

Very Flexible Duct Hose for Liquids

Very Flexible
Color: Gray
Temperature Range: -20° to 150° F

A small bend radius lets this hose twist and turn to fit in cramped spaces. Hose is for use with water and oil.

Duct Hose

								Spiral
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Max. Continuous Lg., ft.		Per Ft.
Per Foot
PVC
1 1/4"	1 1/2"	1"	50%	27 in. of Hg @ 72° F	45 psi @ 72° F	0.032"	Ribbed	Left Hand	Metal	50	0000000	00000
1 1/2"	1 3/4"	1 1/2"	50%	26 in. of Hg @ 72° F	36 psi @ 72° F	0.032"	Ribbed	Left Hand	Metal	50	0000000	0000
2"	2 3/8"	2"	50%	25 in. of Hg @ 72° F	26 psi @ 72° F	0.032"	Ribbed	Left Hand	Metal	50	0000000	0000
2 1/2"	2 7/8"	2 1/2"	50%	24 in. of Hg @ 72° F	20 psi @ 72° F	0.032"	Ribbed	Left Hand	Metal	50	0000000	0000
3"	3 3/8"	2 1/2"	45%	24 in. of Hg @ 72° F	20 psi @ 72° F	0.032"	Ribbed	Left Hand	Metal	25	0000000	0000
4"	4 3/8"	3 1/2"	45%	18 in. of Hg @ 72° F	14 psi @ 72° F	0.032"	Ribbed	Left Hand	Metal	25	0000000	0000
												Each
Full Coil
PVC
1 1/4"	1 1/2"	1"	50%	27 in. of Hg @ 72° F	45 psi @ 72° F	0.032"	Ribbed	Left Hand	Metal	50	00000000	000000
1 1/2"	1 3/4"	1 1/2"	50%	26 in. of Hg @ 72° F	36 psi @ 72° F	0.032"	Ribbed	Left Hand	Metal	50	00000000	000000
2"	2 3/8"	2"	50%	25 in. of Hg @ 72° F	26 psi @ 72° F	0.032"	Ribbed	Left Hand	Metal	50	00000000	000000
2 1/2"	2 7/8"	2 1/2"	50%	24 in. of Hg @ 72° F	20 psi @ 72° F	0.032"	Ribbed	Left Hand	Metal	50	00000000	000000
3"	3 3/8"	2 1/2"	45%	24 in. of Hg @ 72° F	20 psi @ 72° F	0.032"	Ribbed	Left Hand	Metal	25	00000000	000000
4"	4 3/8"	3 1/2"	45%	18 in. of Hg @ 72° F	14 psi @ 72° F	0.032"	Ribbed	Left Hand	Metal	25	00000000	000000

Screw-On Fittings

Screw these fittings over the end of your duct hose to make connections to equipment.

	ID		OD
For Hose ID	A	B	A	B	Temperature Range, ° F	Color		Each
PVC
1 1/4"	1 7/16"	1 1/4"	1 5/8"	1 1/2"	-20° to 150°	Gray	0000000	00000
1 1/2"	1 3/4"	1 1/2"	2"	1 3/4"	-20° to 150°	Gray	0000000	0000
2"	2 1/4"	2"	2 1/2"	2 1/4"	-20° to 150°	Gray	0000000	00000
2 1/2"	2 13/16"	2 1/2"	3"	2 13/16"	-20° to 150°	Gray	0000000	00000
3"	3 3/8"	3"	3 9/16"	3 3/8"	-20° to 150°	Gray	0000000	00000

Connectors

Thread these connectors over the end of your hose to create longer lengths without the need for clamps.

PVC
For ID	ID	OD	Temperature Range, ° F	Color		Each
2"	2 7/16"	2 1/2"	-20° to 150°	Gray	0000000	000000

Crush-Resistant Duct Hose for Liquids

Flexible
Temperature Range: 5290K and 9020T Series: -20° to 140° F; 5200K Series: 20° to 140° F

Step on this hose without causing damage. It is for use with water and chemicals such as citric acid.

Hose with fittings attached lets you connect to pumps, vacuum systems, and other equipment.

Hose with Unfinished Ends

									Per Ft.
ID	OD	Bend Radius	Max. Vacuum	Max. Pressure	Interior Surface Texture	Choose a Color	Max. Continuous Lg., ft.		1-49	50-Up
Polyethylene
1/2"	3/4"	1 1/2"	29 in. of Hg @ 72° F	15 psi @ 72° F	Ribbed	Silver/Black	50	0000000	00000	00000
5/8"	15/16"	1 1/2"	29 in. of Hg @ 72° F	15 psi @ 72° F	Ribbed	Silver/Black	50	0000000	0000	0000
3/4"	1 1/16"	3"	29 in. of Hg @ 72° F	15 psi @ 72° F	Ribbed	Silver/Black	50	0000000	0000	0000
7/8"	1 3/16"	3"	29 in. of Hg @ 72° F	15 psi @ 72° F	Ribbed	Silver/Black	50	0000000	0000	0000
1"	1 3/8"	3 1/2"	29 in. of Hg @ 72° F	15 psi @ 72° F	Ribbed	Silver/Black	50	0000000	0000	0000
1 1/4"	1 3/4"	2 1/2"	29 in. of Hg @ 72° F	20 psi @ 72° F	Ribbed	Black, Gray	50	0000000	0000	0000
1 1/2"	2"	3"	29 in. of Hg @ 72° F	16 psi @ 72° F	Ribbed	Black, Gray	50	0000000	0000	0000
2"	2 5/8"	4 1/2"	29 in. of Hg @ 72° F	15 psi @ 72° F	Ribbed	Black, Gray	50	0000000	0000	0000
2 1/2"	3 1/16"	5"	29 in. of Hg @ 72° F	14 psi @ 72° F	Ribbed	Black, Gray	50	0000000	00000	0000
3"	3 9/16"	7 1/2"	29 in. of Hg @ 72° F	9 psi @ 72° F	Ribbed	Black, Gray	50	0000000	00000	00000
3 1/2"	4"	10"	4 in. of Hg @ 72° F	2 psi @ 72° F	Ribbed	Gray/Black	50	0000000	00000	00000
4"	4 3/4"	9 1/2"	29 in. of Hg @ 72° F	8 psi @ 72° F	Ribbed	Black, Gray	50	0000000	00000	00000

Hose with Fittings Attached

							Fitting
ID	OD	Bend Radius	Fitting ID	Max. Vacuum	Max. Pressure	Interior Surface Texture	Material	Color	Choose a Color		10 ft.	15 ft.	25 ft.
Polyethylene
1 1/2"	2"	2"	1 1/2"	22 in. of Hg @ 72° F	15 psi @ 72° F	Ribbed	Polyethylene	White	Blue, Gray, Green, Red, Yellow	000000	000000	000000	000000
2"	2 1/2"	2 1/2"	2"	16 in. of Hg @ 72° F	10 psi @ 72° F	Ribbed	Polyethylene	White	Blue, Gray, Green, Red, Yellow	000000	00000	00000	00000

Screw-On Fittings

Fittings screw over the end of your duct hose so you can connect to equipment.

	ID		OD
For Hose ID	A	B	A	B	Temperature Range, ° F	Color		Each
PVC
3/4"	1"	3/4"	1.148"	0.856"	20° to 140°	Gray	0000000	00000
7/8"	1 5/16"	7/8"	1.314"	1.038"	20° to 140°	Gray	0000000	0000
1"	1 5/16"	1"	1.456"	1.611"	20° to 140°	Gray	0000000	0000
1 1/4"	1 11/16"	1 1/4"	1.61"	1.43"	20° to 140°	Gray	0000000	0000
1 1/2"	2"	1 1/2"	2.19"	1.79"	20° to 140°	Gray	0000000	0000
2"	2 9/16"	2"	2.72"	2.31"	20° to 140°	Gray	0000000	0000
2 1/2"	3 3/16"	2 1/2"	3.41"	2.82"	20° to 140°	Gray	0000000	00000
3"	3 11/16"	3"	3.93"	3.36"	20° to 140°	Gray	0000000	00000
4"	4 15/16"	4"	4.93"	4.45"	20° to 140°	Gray	0000000	00000

Duct Hose with Wear Strip for Liquids

Flexible
Color: Clear; Wear Strip is Blue
Temperature Range:-40° to 200° F

Run water, mist, oil, and chemicals such as citric and acetic acid through this hose. Hose has a wear strip that protects against damage caused by dragging.

Duct Hose

							Spiral
ID	OD	Bend Radius	Max. Vacuum	Max. Pressure	Material Thick.	Interior Surface Texture	Direction	Material	Max. Continuous Lg., ft.		Per Ft.
Polyurethane
1 1/4"	1 5/8"	3"	28 in. of Hg @ 72° F	40 psi @ 72° F	0.04"	Ribbed	Left Hand	Plastic	50	00000000	00000
1 1/2"	1 13/16"	3 1/2"	28 in. of Hg @ 72° F	40 psi @ 72° F	0.05"	Ribbed	Left Hand	Plastic	50	00000000	0000
1 3/4"	2 1/4"	4"	28 in. of Hg @ 72° F	40 psi @ 72° F	0.055"	Ribbed	Left Hand	Plastic	50	00000000	00000
2"	2 1/2"	4 1/2"	28 in. of Hg @ 72° F	40 psi @ 72° F	0.055"	Ribbed	Left Hand	Plastic	50	00000000	00000
2 1/4"	2 13/16"	4 13/16"	28 in. of Hg @ 72° F	40 psi @ 72° F	0.055"	Ribbed	Left Hand	Plastic	50	00000000	00000
2 1/2"	3"	5"	28 in. of Hg @ 72° F	40 psi @ 72° F	0.055"	Ribbed	Left Hand	Plastic	50	00000000	00000
3"	3 7/16"	5 13/16"	28 in. of Hg @ 72° F	40 psi @ 72° F	0.055"	Ribbed	Left Hand	Plastic	50	00000000	00000
4"	4 5/8"	6"	20 in. of Hg @ 72° F	30 psi @ 72° F	0.06"	Ribbed	Left Hand	Plastic	50	00000000	00000

Fittings

Screw these fittings over the end of your duct hose to make connections to equipment.

	ID		OD
For Hose ID	A	B	A	B	Temperature Range, °F	Color		Each
Vinyl-Coated PVC
1 1/2"	2"	1 1/2"	2 3/16"	1 3/4"	20° to 160°	White	0000000	00000
2"	2 1/2"	2"	2 5/8"	2 3/8"	20° to 160°	White	0000000	0000
2 1/2"	3"	2 1/2"	3 3/8"	2 13/16"	20° to 160°	White	0000000	00000
PVC
1 1/4"	1 5/8"	1 1/4"	1 13/16"	1 7/16"	20° to 160°	White	0000000	0000
3"	3 1/2"	3"	3 7/8"	3 3/8"	20° to 160°	White	0000000	00000

Abrasion-Resistant Duct Hose for Liquids

Flexible
Color: Black or Gray
Temperature Range: -40° to 300° F

If your liquid contains some solid particles, this tough EPDM rubber hose can handle the extra abrasion. Hose is for use with water and noncorrosive acids.

Duct Hose

Black Hose

Gray Hose

Black EPDM Rubber
ID	OD	Cuff ID	Bend Radius	Max. Vacuum	Material Thick.	Interior Surface Texture	Lg., ft.		Each
1 1/2"	2"	2"	1"	20 in. of Hg @ 72° F	1/8"	Ribbed	10	000000	000000
2"	2 1/2"	2"	2"	20 in. of Hg @ 72° F	1/8"	Ribbed	10	000000	00000
Gray EPDM Rubber
1 1/2"	2"	2"	1"	20 in. of Hg @ 72° F	1/8"	Ribbed	10	000000	00000
2"	2 1/2"	2"	2"	20 in. of Hg @ 72° F	1/8"	Ribbed	10	000000	000000

Push-On Fittings

Push the small end of the fitting into your duct hose to connect to a portable vacuum or other equipment.

For Hose ID		ID		OD
A	B	A	B	A	B	Temperature Range, ° F	Color		Each
Plastic
1 1/2", 2"	2"	1 13/16"	2 1/16"	2"	2 1/4"	-30° to 160°	Black	000000	00000

Sanitary Snap-In Duct Hose and Fittings

Hose and Fittings Shown Installed

Flexible
Color: Clear
Temperature Range: See Table

Transfer material from sifters, feeders, and strainers to other parts of your sanitary line with these hose lengths and fittings. They’re 3-A and USDA certified to meet sanitary design standards, as well as FDA compliant for direct contact with food. Cuffs at each end of the hose have grooves that snap into matching grooves on fittings. These grooves form a seal that’s more sanitary than hose clamp connections, since there are no gaps where contaminants could gather. It’s also tighter and less likely to leak than hose clamps. When pressure increases, the hose presses against fittings, tightening the seal. You don’t need tools to install or remove this hose—squeeze the end cuff to slide it into or out of fittings.

Made from flexible, abrasion-resistant plastic, this hose won’t crack and rip from the movement of your machines. It’s also chemical-resistant, so it holds up to frequent washing during clean-in-place (CIP) cycles. The smooth seams won't trap food and other particles. It's clear, so you can monitor flow.

When choosing a hose length, consider the side-to-side, horizontal, and rotational movement of your machines. You’ll need hose that’s slightly longer than the gap between equipment to account for movement and vibration.

Hose with 1" coil is good for applications with up-and-down movement, such as bag feeders. The closely-spaced internal coil helps the hose maintain its shape while it’s compressed.

Hose with 4" coil has thick, flexible walls that bend side-to-side to handle misalignment and rotation. It’s often used with sifters and strainers. This hose doesn’t handle up-and-down movement as well as hose with 1" coil, since the walls may crease when the hose is compressed. Creases in the hose wall restrict flow, increase wear, and create pockets that trap food and liquids. This hose is latex-free and doesn’t include Bisphenol A (BPA), which is a chemical that can contaminate your line.

Fittings are stainless steel, which won’t corrode from harsh cleaners and sanitizers. You can cut them to fit onto existing pipes. Weld them to the inlets and outlets on your equipment before attaching hose.

Duct Hose

Duct Hose with 1" Coil Length

Duct Hose with 4" Coil Length

								Spiral
ID	OD	Bend Radius	Compresses To	Max. Vacuum	Max. Pressure	Temperature Range, °F	Material Thickness	Direction	Material	Surface Resistivity, ohms/sq.	Specifications Met		4" Lg.	6" Lg.	8" Lg.	10" Lg.	12" Lg.	16" Lg.
Plastic
1" Coil Length
3 15/16"	4"	Not Rated	33%	Not Rated	Not Rated	0° to 180°	0.032"	Right Hand	Metal	Not Rated	3-A Certified 20-27 3-A Certified 63-03 FDA Compliant 21 CFR 175.105 FDA Compliant 21 CFR 177.1680 FDA Compliant 21 CFR 177.2600	000000	00	00	0000000	0000000	0000000	0000000
4" Coil Length
3 15/16"	4"	Not Rated	40%	Not Rated	Not Rated	-10° to 230°	0.032"	Right Hand	Metal	10¹⁰	3-A Certified 20-27 3-A Certified 63-03 FDA Compliant 21 CFR 177.1680 FDA Compliant 21 CFR 177.2600	000000	0000000	0000000	000000	000000	000000	000000
5 15/16"	6"	Not Rated	40%	Not Rated	Not Rated	-10° to 230°	0.032"	Right Hand	Metal	10¹⁰	3-A Certified 20-27 3-A Certified 63-03 FDA Compliant 21 CFR 177.1680 FDA Compliant 21 CFR 177.2600	000000	000000	000000	000000	000000	000000	000000
7 15/16"	8"	Not Rated	40%	Not Rated	Not Rated	-10° to 230°	0.032"	Right Hand	Metal	10¹⁰	3-A Certified 20-27 3-A Certified 63-03 FDA Compliant 21 CFR 177.1680 FDA Compliant 21 CFR 177.2600	000000	000000	000000	000000	000000	000000	000000

Fittings

Fitting

Stainless Steel
ID	OD	Length		Each
3 15/16"	4"	3 1/2 "	0000000	0000000
5 15/16"	6"	3 1/2 "	0000000	000000
7 15/16"	8"	3 1/2 "	0000000	000000

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About Duct Hose

Smooth-Flow Duct Hose for Liquids

Very Flexible Duct Hose for Liquids

Crush-Resistant Duct Hose for Liquids

Duct Hose with Wear Strip for Liquids

Abrasion-Resistant Duct Hose for Liquids

Sanitary Snap-In Duct Hose and Fittings