Manifolds for Alcohol | McMaster-Carr

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How to Measure Threaded Pipe Size

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.

Right-Angle Flow Rectangular Manifolds

Distribute air or fluid to multiple locations from a single supply source with these manifolds. They are also known as headers. They have mounting holes, so you can mount from the top or side.

Stainless steel manifolds have the best corrosion resistance of all our metal manifolds. They can handle a wider temperature range than other plastic and metal manifolds. 316 stainless steel manifolds have better corrosion resistance than 303 stainless steel manifolds to handle fuel and gasoline in addition to coolant and other harsh substances.

Use a plug (sold separately) to close off any unused inlets and outlets.

For technical drawings and 3-D models, click on a part number.

316 Stainless Steel—NPT Inlets × NPT Outlets

Outlets on One Side

For Use With: Air, Water, Hydraulic Fluid, Alcohol, Coolant, Cutting Oil, Deionized Water, Diesel Fuel, Fuel Oil, Gasoline, Mineral Oil, Nitrogen
Temperature Range: -100° to 500° F
Maximum Pressure:
Air: 1,000 psi @ 72° F
Water: 5,000 psi @ 72° F
Hydraulic Fluid: 5,000 psi @ 72° F
Alcohol, Coolant, Cutting Oil, Deionized Water, Diesel Fuel, Fuel Oil, Gasoline, Mineral Oil, Nitrogen: 3,000 psi @ 72° F

	Inlet		Outlet
No. of Outlets	Pipe Size	Dash Size	Pipe Size	Dash Size	Lg.	Wd.	Ht.	Outlet Ctr.-to-Ctr.		Each
Outlets on One Side—Standard Outlet Spacing
2	1/4	04	1/8	02	1 3/4"	1"	1"	3/4"	00000000	000000
2	3/8	06	1/4	04	2 1/8"	1 1/4"	1 1/4"	1 1/8"	00000000	000000
2	1/2	08	3/8	06	2 3/4"	1 1/2"	1 1/2"	1"	00000000	000000
4	1/4	04	1/8	02	3 1/4"	1"	1"	3/4"	00000000	000000
4	3/8	06	1/4	04	3 7/8"	1 1/4"	1 1/4"	7/8"	00000000	000000
4	1/2	08	3/8	06	4 3/4"	1 1/2"	1 1/2"	1"	00000000	000000

316 Stainless Steel—BSPP Inlets × BSPP Outlets

Outlets on One Side

For Use With: Air, Water, Hydraulic Fluid, Alcohol, Coolant, Cutting Oil, Deionized Water, Diesel Fuel, Fuel Oil, Gasoline, Mineral Oil, Nitrogen
Temperature Range: -65° to 250° F
Maximum Pressure: 3,500 psi @ 72° F
Maximum Vacuum: 27 in. of Hg @ 72° F

	Inlet		Outlet
No. of Outlets	Pipe Size	Dash Size	Pipe Size	Dash Size	Lg.	Wd.	Ht.	Outlet Ctr.-to-Ctr.		Each
Outlets on One Side—Standard Outlet Spacing
2	1/4	04	1/8	02	1 3/4"	1"	1"	3/4"	00000000	0000000
3	1/4	04	1/8	02	2 1/2"	1"	1"	3/4"	00000000	000000
3	3/4	12	1/2	08	5 1/2"	2"	2"	1 1/2"	00000000	000000
3	1	16	3/4	12	7"	2 1/2"	2 1/2"	2"	00000000	000000
4	3/4	12	1/2	08	7"	2"	2"	1 1/2"	00000000	000000
6	1/4	04	1/8	02	4 3/4"	1"	1"	3/4"	00000000	000000
6	3/8	06	1/4	04	5 7/8"	1 1/4"	1 1/4"	7/8"	00000000	000000
6	3/4	12	1/2	08	10"	2"	2"	1 1/2"	00000000	000000
6	1	16	3/4	12	13"	2 1/2"	2 1/2"	2"	00000000	000000

316 Stainless Steel—BSPT Inlets × BSPT Outlets

Outlets on One Side

For Use With: Air, Water, Hydraulic Fluid, Alcohol, Coolant, Cutting Oil, Deionized Water, Diesel Fuel, Fuel Oil, Gasoline, Mineral Oil, Nitrogen
Temperature Range: -65° to 250° F
Maximum Pressure: 3,500 psi @ 72° F
Maximum Vacuum: 27 in. of Hg @ 72° F

	Inlet		Outlet
No. of Outlets	Pipe Size	Dash Size	Pipe Size	Dash Size	Lg.	Wd.	Ht.	Outlet Ctr.-to-Ctr.		Each
Outlets on One Side—Standard Outlet Spacing
2	1/4	04	1/8	02	2 1/2"	1"	1"	3/4"	00000000	0000000
6	1/4	04	1/8	02	4 3/4"	1"	1"	3/4"	00000000	000000

Plugs

316 Stainless Steel—NPT
Pipe Size	Drive	Pressure Class	Max. Pressure		Each
1/8	External Hex	3000	3,000 psi @ 72° F	00000000	00000
1/4	External Hex	3000	3,000 psi @ 72° F	00000000	0000
3/8	External Hex	3000	3,000 psi @ 72° F	00000000	00000
1/2	External Hex	3000	3,000 psi @ 72° F	00000000	00000

Straight-Flow Rectangular Manifolds

Unlike other manifolds, which have an inlet on either end, these have one inlet on the opposite side from the outlets. This design allows fluid or air to follow a straight path, improving flow through your system. It also frees up the ends of the manifold, so you can mount it in corners and in narrow spaces. Manifolds are also known as headers. They have mounting holes, so you can mount from the top or side.

316 stainless steel manifolds have excellent corrosion resistance. They can handle fuel, gasoline, coolant, and other harsh substances.

Use a plug (sold separately) to close off any unused inlets and outlets.

For technical drawings and 3-D models, click on a part number.

316 Stainless Steel—NPT Inlets × NPT Outlets

For Use With: Air, Water, Hydraulic Fluid, Alcohol, Coolant, Cutting Oil, Deionized Water, Diesel Fuel, Fuel Oil, Gasoline, Mineral Oil, Nitrogen
Temperature Range: -60° to 250° F
Maximum Pressure:
Air: 3,500 psi @ 72° F
Water: 3,500 psi @ 72° F
Hydraulic Fluid: 3,500 psi @ 72° F

	Inlet		Outlet
No. of Outlets	Pipe Size	Dash Size	Pipe Size	Dash Size	Lg.	Wd.	Ht.	Outlet Ctr.-to-Ctr.		Each
Standard Outlet Spacing
4	1/4	4	1/8	2	3 1/4"	1"	1"	3/4"	00000000	0000000
4	3/8	6	1/4	4	4 1/8"	1 1/4"	1 1/4"	7/8"	00000000	000000
4	1/2	8	3/8	6	4 3/4"	1 1/2"	1 1/2"	1"	00000000	000000

Low-Profile Hex Manifolds

When you’re short on vertical space, these manifolds are a good fit—they have outlets on the side instead of on top, so they have a lower profile than rectangular manifolds. Use them to distribute air, water, or hydraulic fluid to five locations from a single supply source. Manifolds have mounting holes, so you can mount from the top.

316 stainless steel manifolds have excellent corrosion resistance and can handle fuel, gasoline, coolant and other harsh substances.

Use a plug (sold separately) to close off any unused inlets and outlets.

For technical drawings and 3-D models, click on a part number.

316 Stainless Steel—NPT Inlets × NPT Outlets

For Use With: Air, Water, Hydraulic Fluid, Alcohol, Coolant, Cutting Oil, Deionized Water, Diesel Fuel, Fuel Oil, Gasoline, Mineral Oil, Nitrogen
Temperature Range: -100° to 500° F
Maximum Pressure: 3,500 psi @ 72° F
Maximum Vacuum: 27 in. of Hg @ 72° F

	Inlet		Outlet
No. of Outlets	Pipe Size	Dash Size	Pipe Size	Dash Size	Wd.	Ht.	Outlet Spacing		Each
5	1/8	02	1/16	01	1 5/8"	3/4"	Standard	00000000	0000000
5	1/4	04	1/8	02	1 5/8"	3/4"	Standard	00000000	000000
5	3/8	06	1/4	04	1 7/8"	1"	Standard	00000000	000000
5	1/2	08	3/8	06	2"	1 1/4"	Standard	00000000	000000
5	3/4	12	1/2	08	2 1/4"	1 1/2"	Standard	00000000	000000
5	1	16	3/4	12	3"	1 3/4"	Standard	00000000	000000

316 Stainless Steel—UN/UNF (SAE Straight) Inlets × UN/UNF (SAE Straight) Outlets

For Use With: Air, Water, Hydraulic Fluid, Alcohol, Coolant, Cutting Oil, Deionized Water, Diesel Fuel, Fuel Oil, Gasoline, Mineral Oil, Nitrogen
Temperature Range: -100° to 500° F
Maximum Pressure: 3,500 psi @ 72° F
Maximum Vacuum: 27 in. of Hg @ 72° F

	Inlet		Outlet
No. of Outlets	Thread Size	Dash Size	Thread Size	Dash Size	Wd.	Ht.	Outlet Spacing		Each
5	7/16"-20	4	5/16"-18	2	1 5/8"	3/4"	Standard	00000000	0000000
5	9/16"-18	6	7/16"-20	4	1 7/8"	3/4"	Standard	00000000	000000
5	3/4"-16	8	9/16"-18	6	2"	1"	Standard	00000000	000000
5	1 1/16"-12	12	3/4"-16	8	3"	1 1/4"	Standard	00000000	000000
5	1 5/16"-12	16	1 1/16"-12	12	2 1/2"	1 1/2"	Standard	00000000	000000
5	1 5/8"-20	20	1 5/16"-12	16	4 1/2"	2 3/4"	Standard	00000000	000000

316 Stainless Steel—BSPP Inlets × BSPP Outlets

For Use With: Air, Water, Hydraulic Fluid, Alcohol, Coolant, Cutting Oil, Deionized Water, Diesel Fuel, Fuel Oil, Gasoline, Mineral Oil, Nitrogen
Temperature Range: -100° to 500° F
Maximum Pressure: 3,500 psi @ 72° F
Maximum Vacuum: 27 in. of Hg @ 72° F

	Inlet		Outlet
No. of Outlets	Pipe Size	Dash Size	Pipe Size	Dash Size	Wd.	Ht.	Outlet Spacing		Each
5	1/4	04	1/8	02	1 5/8"	3/4"	Standard	00000000	0000000
5	3/8	06	1/4	04	1 7/8"	1"	Standard	00000000	000000
5	1/2	08	3/8	06	2"	1 1/4"	Standard	00000000	000000

316 Stainless Steel—BSPT Inlets × BSPT Outlets

For Use With: Air, Water, Hydraulic Fluid, Alcohol, Coolant, Cutting Oil, Deionized Water, Diesel Fuel, Fuel Oil, Gasoline, Mineral Oil, Nitrogen
Temperature Range: -100° to 500° F
Maximum Pressure: 3,500 psi @ 72° F
Maximum Vacuum: 27 in. of Hg @ 72° F

	Inlet		Outlet
No. of Outlets	Pipe Size	Dash Size	Pipe Size	Dash Size	Wd.	Ht.	Outlet Spacing		Each
5	1/4	04	1/8	02	1 5/8"	3/4"	Standard	00000000	0000000
5	3/8	06	1/4	04	1 7/8"	1"	Standard	00000000	000000
5	1/2	08	3/8	06	2"	1 1/4"	Standard	00000000	000000

316 Stainless Steel—Metric Inlets × Metric Outlets

For Use With: Air, Water, Hydraulic Fluid, Alcohol, Coolant, Cutting Oil, Deionized Water, Diesel Fuel, Fuel Oil, Gasoline, Mineral Oil, Nitrogen
Temperature Range: -100° to 500° F
Maximum Pressure: 3,500 psi @ 72° F
Maximum Vacuum: 27 in. of Hg @ 72° F

	Inlet		Outlet
No. of Outlets	Thread Size	Thread Pitch, mm	Thread Size	Thread Pitch, mm	Wd., mm	Ht., mm	Outlet Spacing		Each
5	M6	1	M3	0.5	45	19	Standard	00000000	0000000
5	M8	1	M6	1	45	19	Standard	00000000	000000
5	M10	1	M8	1	45	19	Standard	00000000	000000
5	M12	1.5	M10	1	47	19	Standard	00000000	000000
5	M14	1.5	M12	1.5	47	19	Standard	00000000	000000
5	M16	1.5	M14	1.5	47	25	Standard	00000000	000000
5	M20	1.5	M18	1.5	50	31	Standard	00000000	000000
5	M22	1.5	M20	1.5	50	38	Standard	00000000	000000

Plugs

Hex Drive

316 Stainless Steel—BSPP
Pipe Size	Max. Pressure		Each
1/8	2,000 psi @ 72° F	00000000	000000
1/4	2,000 psi @ 72° F	00000000	00000
316 Stainless Steel—BSPT
1/8	2,000 psi @ 72° F	00000000	00000
1/4	2,000 psi @ 72° F	00000000	00000
3/8	2,000 psi @ 72° F	00000000	00000
1/2	2,000 psi @ 72° F	00000000	00000

External Hex Drive

316 Stainless Steel—NPT
Pipe Size	Max. Pressure	Pressure Class		Each
1/8	3,000 psi @ 72° F	3000	00000000	00000
1/4	3,000 psi @ 72° F	3000	00000000	0000
3/8	3,000 psi @ 72° F	3000	00000000	00000
1/2	3,000 psi @ 72° F	3000	00000000	00000
3/4	3,000 psi @ 72° F	3000	00000000	00000
1	3,000 psi @ 72° F	3000	00000000	00000
316 Stainless Steel—BSPP
1/8	2,000 psi @ 72° F	__	00000000	00000
1/4	2,000 psi @ 72° F	__	00000000	00000
3/8	2,000 psi @ 72° F	__	00000000	00000
1/2	2,000 psi @ 72° F	__	00000000	00000

External Square Drive

316 Stainless Steel—NPT
Pipe Size	Max. Pressure	Pressure Class		Each
1/8	3,000 psi @ 72° F	3000	00000000	00000
1/4	3,000 psi @ 72° F	3000	00000000	0000
3/8	3,000 psi @ 72° F	3000	00000000	00000
1/2	3,000 psi @ 72° F	3000	00000000	00000
3/4	3,000 psi @ 72° F	3000	00000000	00000
1	3,000 psi @ 72° F	3000	00000000	00000

Low-Profile Square Manifolds

316 Stainless Steel

With outlets on the side instead of on top, these manifolds have a lower profile than rectangular manifolds and fit well in cramped spaces. Use them to distribute air, water, or hydraulic fluid to three locations from a single supply source. Manifolds have mounting holes, so you can mount from the top.

316 stainless steel manifolds have excellent corrosion resistance and can handle fuel, gasoline, coolant and other harsh substances.

Use a plug (sold separately) to close off any unused inlets and outlets.

For technical drawings and 3-D models, click on a part number.

316 Stainless Steel—NPT Inlets × NPT Outlets

For Use With: Air, Water, Hydraulic Fluid, Alcohol, Coolant, Cutting Oil, Deionized Water, Diesel Fuel, Fuel Oil, Gasoline, Mineral Oil, Nitrogen
Temperature Range: -100° to 500° F
Maximum Pressure: 3,500 psi @ 72° F
Maximum Vacuum: 27 in. of Hg @ 72° F

	Inlet		Outlet
No. of Outlets	Pipe Size	Dash Size	Pipe Size	Dash Size	Lg.	Wd.	Ht.		Each
3	1/4	04	1/8	02	1 1/2"	1 1/2"	3/4"	0000000	0000000
3	3/8	06	1/4	04	2"	2"	1"	0000000	000000
3	1/2	08	3/8	06	2 1/2"	2 1/2"	1 1/4"	0000000	000000
3	3/4	12	1/2	08	2 3/4"	2 3/4"	1 1/2"	0000000	000000
3	1	16	3/4	12	3"	3"	1 3/4"	0000000	000000

Medium-Pressure Aluminum Threaded Pipe Fittings, Plugs

316 Stainless Steel—NPT
Pipe Size	Drive	Length	Max. Pressure		Each
1/8	External Hex	5/8"	3,000 psi @ 72° F	00000000	00000
1/8	External Square	17/64"	3,000 psi @ 72° F	00000000	0000
1/4	External Hex	47/64"	3,000 psi @ 72° F	00000000	0000
1/4	External Square	25/64"	3,000 psi @ 72° F	00000000	0000
3/8	External Hex	7/8"	3,000 psi @ 72° F	00000000	00000
3/8	External Square	15/32"	3,000 psi @ 72° F	00000000	00000
1/2	External Hex	59/64"	3,000 psi @ 72° F	00000000	00000
1/2	External Square	35/64"	3,000 psi @ 72° F	00000000	00000
3/4	External Hex	1 3/64"	3,000 psi @ 72° F	00000000	00000
3/4	External Square	21/32"	3,000 psi @ 72° F	00000000	00000
1	External Hex	1 1/8"	3,000 psi @ 72° F	00000000	00000
1	External Square	13/16"	3,000 psi @ 72° F	00000000	00000

Round Manifolds for Hose Lines

Mount these manifolds on the end of a hose line to distribute air, water, or hydraulic fluid to three locations from a single supply source.

316 stainless steel manifolds have excellent corrosion resistance and can handle fuel, gasoline, coolant and other harsh substances.

316 Stainless Steel—For Use With Air, Water, Hydraulic Fluid, Alcohol, Coolant, Cutting Oil, Deionized Water, Diesel Fuel, Fuel Oil, Gasoline, Mineral Oil, Nitrogen

Temperature Range: -60° to 500° F
Maximum Pressure:
Air: 1,000 psi @ 72° F
Water: 3,500 psi @ 72° F
Hydraulic Fluid: 3,500 psi @ 72° F
Maximum Vacuum: 27 in. of Hg @ 72° F

	Inlet		Outlet
No. of Outlets	Pipe Size	Dash Size	Pipe Size	Dash Size	Lg.	OD	Outlet Ctr.-to-Ctr.	Outlet Spacing		Each
NPT Inlets × NPT Outlets
3	1/4	04	1/4	04	1 1/2"	1 5/8"	1"	Standard	00000000	000000
3	3/8	06	1/4	04	1 1/2"	1 5/8"	1"	Standard	00000000	00000
3	1/2	08	1/4	04	1 1/2"	1 5/8"	1"	Standard	00000000	000000
3	1/2	08	3/8	06	1 3/4"	2"	1 1/4"	Standard	00000000	000000
3	3/4	12	1/2	08	2 1/2"	3"	1 3/4"	Standard	00000000	000000
BSPT Inlets × BSPT Outlets
3	1/4	04	1/4	04	1 1/2"	1 5/8"	1"	Standard	00000000	00000
3	3/8	06	1/4	04	1 1/2"	1 5/8"	1"	Standard	00000000	00000
3	1/2	08	1/4	04	1 1/2"	1 5/8"	1"	Standard	00000000	000000
3	1/2	08	3/8	06	1 3/4"	2"	1 1/4"	Standard	00000000	000000

Straight-Flow Junction Blocks

Use these junction blocks to organize and separate multiple lines in your system. They have threaded holes that allow air, water, or hydraulic fluid to flow straight through the block. They have mounting holes, so you can mount from the side.

316 stainless steel junction blocks have excellent corrosion resistance and can handle fuel, gasoline, coolant, and other harsh substances.

For technical drawings and 3-D models, click on a part number.

316 Stainless Steel—NPT Inlets × NPT Outlets

For Use With: Air, Water, Hydraulic Fluid, Alcohol, Coolant, Cutting Oil, Deionized Water, Diesel Fuel, Fuel Oil, Gasoline, Mineral Oil, Nitrogen
Temperature Range: -100° to 500° F
Maximum Pressure:
Air: 1,000 psi @ 72° F
Water: 3,500 psi @ 72° F
Hydraulic Fluid: 3,500 psi @ 72° F
Maximum Vacuum: Not Rated

	Inlet		Outlet
No. of Outlets	Pipe Size	Dash Size	Pipe Size	Dash Size	Lg.	Wd.	Ht.	Outlet Ctr.-to-Ctr.	Outlet Spacing		Each
2	1/8	02	1/8	02	1 3/4"	1"	1"	3/4"	Standard	00000000	0000000
2	1/4	04	1/4	04	1 3/4"	1"	1"	7/8"	Standard	00000000	000000
4	1/8	02	1/8	02	3 1/4"	1"	1"	3/4"	Standard	00000000	000000
4	1/4	04	1/4	04	4 1/8"	1"	1"	7/8"	Standard	00000000	000000
4	3/8	06	3/8	06	7 3/4"	1 1/2"	1 1/2"	1 1/2"	Standard	00000000	000000