1 1/4 Wyes | McMaster-Carr

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Wye	Straight

	Pipe Size Pipe Size	Show

1 1/4

	Pipe Size Pipe Size	Hide

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1/4
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	Thread Type Thread Type

NPT

	Material Material

	Connection Style Connection Style

Threaded

Socket Connect

	For Use With For Use With

	Schedule Schedule


40	80

	For Pipe Material For Pipe Material

	Maximum Pressure Maximum Pressure

	Color Color

	White		Black
	Dark Gray		Light Gray

	Connection Type Connection Type

	Pipe

	For Pipe Schedule For Pipe Schedule

	Gender Gender

Female

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Type Type


Connector	Reducer

	Specifications Met Specifications Met

	Maximum Temperature Maximum Temperature

	Minimum Temperature Minimum Temperature

-49° to 0° F

25° F or greater

Not Rated

	Maximum Steam Pressure Maximum Steam Pressure

	Finish Finish

Black Coated

Galvanized

	System of Measurement System of Measurement

Inch

	Wye Angle Wye Angle

45°

90°

	Socket Depth Socket Depth

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44 Products

About Strainers and Selecting Screen 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.

About On/Off Valves

About Backflow-Prevention Valves

Low-Pressure Stainless Steel Threaded Pipe Fittings

Use these fittings in a low-pressure pipe line.

304 stainless steel fittings have very good corrosion resistance. 316 stainless steel fittings have excellent corrosion resistance.

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

Wye Connectors

For Use With: Air, Natural Gas, Oil, Steam, Water
Class: 150
Fabrication: Heat Treated
Specifications Met: ASTM A351
Pipe Nipples and Pipe: Use Schedule 40 stainless steel
Flanges: Use Class 150 stainless steel

				304 Stainless Steel		316 Stainless Steel
Pipe Size	Max. Pressure	Max. Steam Pressure	Wye Angle		Each		Each
NPT Female
1 1/4	150 psi @ 72° F	150 psi @ 360° F	90°	00000000	000000	00000000	000000

Low-Pressure Iron and Steel Threaded Pipe Fittings

Use these fittings for low-pressure applications in noncorrosive environments.

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

Wye Connectors

For Use With: Air, Steam, Oil, Water, Natural Gas
Class: 150
Specifications Met: ASME B16.3, UL Listed, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 40 steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1 1/4	150 psi @ 72° F	150 psi @ 350° F	Black-Coated Iron	000000000	000000

Low-Pressure Galvanized Iron and Steel Threaded Pipe Fittings

The galvanized finish on these fittings provides fair corrosion resistance. Fittings are for use in low-pressure applications.

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

Wye Connectors

For Use With: Air, Steam, Oil, Water, Natural Gas
Class: 150
Specifications Met: ASTM A197, UL Listed, ASME B16.3, ASME B1.20.1
Pipe Nipples and Pipe: Use Schedule 40 galvanized steel
Flanges: Use Class 150 galvanized steel

NPT Female
Pipe Size	Max. Pressure	Max. Steam Pressure	Material		Each
1 1/4	150 psi @ 72° F	150 psi @ 350° F	Galvanized Iron	00000000	000000

Low-Pressure Brass and Bronze Threaded Pipe Fittings

Use these fittings in low-pressure flow applications. They have good corrosion resistance. Fittings rated for use with drinking water meet NSF/ANSI 61 safety standards.

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

Wye Connectors

For Use With: Air, Drinking Water, Natural Gas, Oil
Class: 125
Specifications Met: ASME B1.20.1, ASME B16.15, NSF/ANSI 61
Pipe Nipples and Pipe: Use Schedule 40 brass
Flanges: Use Class 150 brass

NPT Female
Pipe Size	Max. Pressure	Material		Each
1 1/4	200 psi @ 72° F	Brass	00000000	0000000

Standard-Wall Plastic Pipe Fittings for Water

Connect these fittings to Schedule 40 plastic pipe–they are the industry standard for residential and commercial low-pressure plumbing and water supply applications. They are plastic for good corrosion resistance.

Fittings for drinking water meet NSF/ANSI Standard 61.

Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a PVC primer and cement (also known as solvent weld).

Fittings that meet ASTM D1784, ASTM D1785, and ASTM D4066 adhere to specifications and testing requirements for material quality.

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.

Wye Connectors, Female Socket Connect

For Use With: Drinking Water, Water
Maximum Temperature: 140° F
Specifications Met: ASTM D1784, NSF/ANSI 61
Pipe Nipples and Pipe: Use Schedule 40 PVC Plastic
Flanges: Use Schedule 40 PVC Plastic

Pipe Size	Socket Depth	Material	Color		Each
1 1/4	1 1/4"	PVC Plastic	White	00000000	00000

Wye Reducers, Female Socket Connect

For Use With: Drinking Water, Water
Maximum Temperature: 140° F
Specifications Met: ASTM D1784, NSF/ANSI 61
Pipe Nipples and Pipe: Use Schedule 40 PVC Plastic
Flanges: Use Schedule 40 PVC Plastic

(A)		(B)
Pipe Size	Socket Depth	Pipe Size	Socket Depth	Material	Color		Each
1 1/4	15/16"	1	7/8"	PVC Plastic	White	00000000	000000
1 1/2	1 3/32"	1 1/4	15/16"	PVC Plastic	White	00000000	00000

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 D1784 specifications and testing requirements for material quality.

Fittings for drinking water meet NSF/ANSI Standard 61.

Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a PVC primer and cement (also known as solvent weld).

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.

Wye Connectors, Female Socket Connect

For Use With: Drinking Water, Water
Maximum Temperature: 140° F
Specifications Met: ASTM D1784, NSF/ANSI 61
Pipe Nipples and Pipe: Use Schedule 80 PVC Plastic
Flanges: Use Class 150 PVC Plastic

Pipe Size	Socket Depth	Material	Color		Each
1 1/4	1 1/4"	PVC Plastic	Dark Gray	00000000	000000

CPVC Pipe Fittings for Hot Water

Made of CPVC, these fittings can handle high temperatures up to 200° F. They have thick, strong walls to handle heavy duty industrial plumbing and water supply applications, such as water processing and waste water treatment. They also have good corrosion resistance. These fittings are comparable to Corzan. Some meet ASTM D1784 specifications and testing requirements for material quality.

Fittings for drinking water meet NSF/ANSI Standard 61.

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.

Sealants cannot be sold to Colorado, Connecticut, District of Columbia, Delaware, Illinois, Indiana, Massachusetts, Maryland, Maine, Michigan, New Hampshire, New Jersey, Northern Virginia, New York, Ohio, Pennsylvania, Rhode Island, or Utah due to local regulatory limits on VOCs (Volatile Organic Compounds).

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

Wye Connectors, Female Socket Connect

For Use With: Acetic Acid (10%), Calcium Chloride, Deionized Water, Drinking Water, Hydrochloric Acid (25%), Phosphoric Acid (85%), Salt Water, Sodium Hydroxide (50%), Sulfuric Acid (75%), Water
Maximum Temperature: 200° F
Specifications Met: ASTM D1784, NSF/ANSI 61
Pipe Nipples and Pipe: Use Schedule 80 CPVC Plastic
Flanges: Use Class 150 CPVC Plastic

Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a CPVC primer and cement (also known as solvent weld).

Pipe Size	Socket Depth	Material	Schedule	Color	Max. Pressure		Each
1 1/4	1 1/4"	CPVC Plastic	80	Light Gray	Not Rated @ Not Rated	00000000	000000

Pipe Cement for Max. Pipe Size 6

00000000

Each

00000

Aboveground Standard-Wall PVC Pipe Fittings for Drain, Waste, and Vent

For Use With: Water
Max. Temperature: 140° F
Specifications Met: ASTM D1784, ASTM D2665
Pipe Nipples and Pipe: Use Schedule 40 PVC Plastic
Flanges: Use Schedule 40 PVC Plastic

These Schedule 40 fittings are the industry standard for gravity-flow drain, waste, and vent (DWV) applications. Fittings are PVC, which has good corrosion resistance. They meet ASTM D1784 and ASTM D2665 specifications and testing requirements for material quality.

Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with a PVC primer and cement (also known as solvent weld).

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.

Wye Connectors, Female Socket Connect

Pipe Size	Socket Dp.	Material	Color		Each
1 1/4	11/16"	PVC Plastic	White	0000000	000000

Pipe Cement (8-oz. Can)

00000000

Each

00000

Drain, Waste, and Vent ABS Pipe Fittings for Chemicals

For Use With: Sodium Hydroxide
Max. Temperature: 180° F
Specifications Met: ASTM D2661, ASTM D3311, ASTM D3965, ASTM F1498
Pipe Nipples and Pipe: Use Schedule 40 ABS Plastic
Flanges: Use Schedule 40 ABS Plastic

These Schedule 40 fittings are an economical option for gravity-flow chemical waste systems. They are ABS plastic, which has excellent strength and impact resistance and good chemical resistance. Fittings meet ASTM D2661, ASTM D3311, ASTM D3965, and ASTM F1498 specifications and testing requirements for material quality and product dimensions.

Attach socket-connect ends to unthreaded pipe or another socket-connect fitting with ABS cement (also known as solvent weld).

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.

Wye Connectors, Female Socket Connect

Pipe Size	Socket Dp.	Material	Color		Each
1 1/4	11/16"	ABS Plastic	Black	00000000	00000

Pipe Cement (8-oz. Can)

00000000

Each

00000

PVC Y-Strainers

For Use With:
Dark Gray: Water and Diesel Fuel
Clear: Water
Max. Pressure: 150 psi @ 70° F
Temp. Range:
Dark Gray: 40° to 140° F
Clear: 40° to 120° F

PVC construction is lightweight and provides excellent corrosion resistance. Install them prior to valves, pumps, and nozzles to catch debris in your pipeline and protect sensitive equipment. Strainers have a threaded drain with a hex cap or plug that provides access to the screen without disconnecting your line.

Strainers with socket-connect pipe connections attach to unthreaded pipe with cement for a permanent, leak-tight connection.

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

With Threaded Pipe Connections

Dark Gray Strainer with Threaded Pipe Connections

Strainers										Replacement Screens		Replacement Caps		Replacement Gaskets
Pipe Size	Thread Type	Lg.	Ht.	For Fitting Schedule	For Pipe Schedule	Features	Choose a Screen Opening Size		Each		Each		Each		Each
Dark Gray Strainer with PVC Plastic Screen
1 1/4	NPT	6 5/8"	5 15/16"	80	80	Threaded Drain with Hex Cap	1/32", 1/16"	0000000	0000000	0000000	000000	0000000	000000	0000000	000000

With Socket-Connect Pipe Connections

Dark Gray Strainer with Socket-Connect Pipe Connections

Strainers										Replacement Screens		Replacement Caps		Replacement Gaskets
Pipe Size	Socket Connect Type	Lg.	Ht.	For Fitting Schedule	For Pipe Schedule	Features	Choose a Screen Opening Size		Each		Each		Each		Each
Dark Gray Strainer with PVC Plastic Screen
1 1/4	Cement	6 5/8"	5 15/16"	80	80	Threaded Drain with Hex Cap	1/32", 1/16"	0000000	0000000	0000000	000000	0000000	000000	0000000	000000

Polypropylene Y-Strainers

Max. Pressure for Water: See Table
Temp. Range: -20° to 150° F

These irrigation polypropylene strainers have excellent corrosion resistance and are lightweight. Install them in your pipeline to trap debris and prevent damage to valves, pumps, nozzles, and other sensitive equipment. They have a threaded drain with a plug that provides access to the screen without disconnecting your line.

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

Strainers												Replacement Screens
Pipe Size	Thread Type	Max. Pressure	Lg.	Ht.	Plug Pipe Size	Color	Gasket Material	Screen Material	Choose a Screen Mesh Size		Each		Each
With Mesh Screen
1 1/4	NPT	200 psi @ 70° F	5 5/8"	6 1/16"	1/2	Black	EPDM Rubber	316 Stainless Steel	20, 40, 80	00000000	000000	0000000	000000

Low-Pressure Bronze Y-Strainers

Max. Pressure for Water, Oil, Inert Gas, and Diesel Fuel: 200 psi @ 70° F
Max. Pressure for Steam: 125 psi @ 400° F
Temp. Range: -20° to 400° F

Install these strainers prior to valves, pumps, and nozzles to catch debris in your pipeline and protect sensitive equipment. They are designed for low-pressure applications. Strainers have a threaded drain with a plug that provides access to the screen without disconnecting your line. They are bronze for good corrosion resistance.

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

Strainers												Replacement Screens
Pipe Size	Thread Type	Lg.	Ht.	Plug Pipe Size	Screen Material	Screen OD	Screen Lg.	Choose a Screen Mesh Size	Choose a Screen Opening Size		Each		Each
With Mesh Screen
1 1/4	NPT	5 5/16"	4 3/4"	1/2	304 Stainless Steel	1 27/64"	3 11/64"	20	__	00000000	000000	000000000	000000
1 1/4	NPT	5 5/16"	4 3/4"	1/2	304 Stainless Steel	1 27/64"	3 11/64"	40, 60, 80, 100, 150, 200	__	00000000	00000	00000000	00000
With Perforated Screen
1 1/4	NPT	5 5/16"	4 3/4"	1/2	304 Stainless Steel	1 7/16"	3 3/16"	__	1/16", 1/8"	000000000	000000	000000000	00000

Medium-Pressure Bronze and Brass Y-Strainers

With Threaded Pipe Connections

Max. Pressure: See Table
Max. Steam Pressure:
Brass: Not Rated
Bronze: 235 psi @ 400° F
Temp. Range:
Brass: 35° to 350° F
Bronze: -20° to 400° F

Strainers catch debris in your pipeline, preventing damage to valves, pumps, nozzles, and other sensitive equipment. They are designed for medium-pressure applications. Strainers have a threaded drain with a plug that provides access to the screen without disconnecting your line. They have good corrosion resistance.

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

With Threaded Pipe Connections—Threaded Drain with Plug

Strainers											Replacement Screens
Pipe Size	Thread Type	Max. Pressure	Lg.	Ht.	Plug Pipe Size	Material	Screen Material	Choose a Screen Mesh Size		Each		Each
For Use With Water, Oil, Inert Gas, and Steam
1 1/4	NPT	400 psi @ 150° F	4 13/16"	4 11/16"	3/8	Bronze	304 Stainless Steel	20, 40, 60, 80, 100	0000000	0000000	0000000	000000

Low-Pressure Iron Y-Strainers

A rugged iron body provides excellent strength and durability. Strainers prevent damage to valves, pumps, nozzles, and other sensitive equipment by catching debris in your pipeline. They are designed for low-pressure applications. Strainers are for use in noncorrosive environments. They have a threaded drain with a plug that provides access to the screen without disconnecting your line.

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

With Threaded Pipe Connections

Strainers									Replacement Screens
Pipe Size	Lg.	Ht.	Plug Pipe Size	Screen Material	Choose a Screen Mesh Size	Choose a Screen Opening Size		Each		Each
With Mesh Screen
1 1/4	5 1/8"	5 15/16"	3/4	304 Stainless Steel	20	__	0000000	000000	0000000	000000
With Mesh and Perforated Screen
1 1/4	5 1/8"	5 15/16"	3/4	304 Stainless Steel	40, 60, 80, 100, 150, 200	__	0000000	00000	0000000	00000
With Perforated Screen
1 1/4	5 1/8"	5 15/16"	3/4	304 Stainless Steel	__	1/32", 1/16", 1/8"	0000000	00000	0000000	00000

Medium-Pressure Iron and Steel Y-Strainers

Max. Pressure for Water, Oil, and Inert Gas:
Iron: 600 psi @ 100° F
Steel: 700 psi @ 100° F
Max. Pressure for Steam:
Iron: 450 psi @ 650° F
Steel: 300 psi @ 400° F
Temp. Range:
Iron: -20° to 650° F
Steel: -20° to 400° F

Made of rugged iron or steel, these strainers provide excellent strength and durability. Install them prior to valves, pumps, and nozzles to protect sensitive equipment from damage caused by debris. They are designed for medium-pressure applications. Strainers are for use in noncorrosive environments. They have a threaded drain with a plug that provides access to the screen without disconnecting your line.

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

Strainers												Replacement Screens
Pipe Size	Thread Type	Lg.	Ht.	Plug Pipe Size	Material	Screen Material	Screen OD	Screen Lg.	Choose a Screen Opening Size		Each		Each
With Perforated Screen
1 1/4	NPT	4 1/8"	3 7/8"	1/2	Steel	304 Stainless Steel	1 3/8"	2 1/4"	1/32", 3/64", 3/32"	0000000	0000000	0000000	000000

High-Flow Threaded Check Valves

To achieve the maximum possible flow, internal components are designed to reduce flow resistance. These valves open to allow flow in one direction and close when flow stops or reverses. A removable cap provides easy access to internal components for maintenance.

Repair kits include everything you need to rebuild the valve.

Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.

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

Bronze Body

Repair Kit for 200 and 300 Pressure Classes

For Use With: Air, Argon, Helium, Krypton, Neon, Steam, Water, Xenon
Disc Material: See table
Seal Material: See table

Valves												Repair Kits
Pipe Size	Flow Coefficient (Cv)	Max. Pressure	Max. Steam Pressure	Min. Opening Pressure, psi	Temperature Range, °F	Disc Material	Seal Material	End-to-End Lg.	Features		Each		Each
NPT Female × NPT Female—150 Pressure Class
1 1/4	39	300 psi @ 150° F	150 psi @ 366° F	0.5	-20° to 405°	Brass	Brass	4 3/8"	Removable Cap	0000000	0000000	000000	00
NPT Female × NPT Female—200 Pressure Class
1 1/4	39	400 psi @ 150° F	200 psi @ 388° F	0.5	-20° to 550°	Bronze	Bronze	4 3/8"	Removable Cap	0000000	000000	00000000	000000
NPT Female × NPT Female—300 Pressure Class
1 1/4	39	600 psi @ 150° F	300 psi @ 422° F	0.5	-20° to 550°	Bronze	Bronze	4 3/8"	Removable Cap	0000000	000000	00000000	00000

Socket-Connect Check Valves for Harsh Chemicals

Insert unthreaded pipe into the socket ends and bond with primer and cement to create a permanent, leak-tight connection. These valves have a plastic body and a fluoroelastomer seal for excellent chemical resistance. They open to allow flow in one direction and close when flow stops or reverses.

Flow coefficient (Cv) is the amount of water (in gallons per minute) at 60° F that will flow through a fully open valve with a difference of 1 psi between the inlet and the outlet.

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

PVC Plastic Body

For Use With: Citric Acid, Deionized Water, Diesel Fuel, Ethylene Glycol, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Mineral Spirits, Nitric Acid, Oil, Phosphoric Acid, Salt Water, Sodium Hypochlorite, Water
Piston Material: PVC Plastic
Spring Material: PVC Plastic
Seal Material: Fluoroelastomer Rubber

Socket Connect × Socket Connect
Pipe Size	For Pipe Schedule	Flow Coefficient (Cv)	Max. Pressure	Min. Opening Pressure, psi	Temperature Range, °F	Color	End-to-End Lg.		Each
1 1/4	40, 80	26	150 psi @ 70° F	2	40° to 140°	Dark Gray	6 5/8"	000000	0000000

CPVC Plastic Body

For Use With: Citric Acid, Deionized Water, Diesel Fuel, Hydrochloric Acid, Isopropyl Alcohol, Kerosene, Mineral Spirits, Nitric Acid, Oil, Phosphoric Acid, Salt Water, Sodium Hypochlorite, Water
Piston Material: CPVC Plastic
Spring Material: CPVC Plastic
Seal Material: Fluoroelastomer Rubber

Socket Connect × Socket Connect
Pipe Size	For Pipe Schedule	Flow Coefficient (Cv)	Max. Pressure	Min. Opening Pressure, psi	Temperature Range, °F	Color	End-to-End Lg.		Each
1 1/4	40, 80	26	150 psi @ 70° F	2	40° to 190°	Light Gray	6 5/8"	0000000	0000000

Dual Shut-Off Threaded Diverting Valves

Female x Female x Female

Valve Type: Ball
For Use With:
NPT Female × NPT Female × NPT Female: Air, Water
NPT Female × NPT Male × NPT Male: Air, Argon, Helium, Krypton, Neon, Oil, Water, Xenon
Seal Material: PTFE Plastic

Control flow in two directions from a single source—these valves have two handles for independent operation of each outlet. They can direct flow from the center-port inlet to one side-port outlet at full capacity, direct flow to both side-port outlets simultaneously at reduced capacity, or shut off flow to both outlet ports completely. Valves are standard port, so they slightly restrict flow.

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

Bronze Body
Inlet Pipe Size	Outlet Pipe Sizes	Flow Pattern	Max. Pressure	Temp. Range, °F	Vacuum Rating, in. of Hg	End-to-End Lg.		Each
NPT Female × NPT Female × NPT Female
1 1/4	3/4 × 3/4	Y-Pattern	550 psi @ 150° F	Not Rated	29	3 7/16"	0000000	0000000