Flanged Reducers | McMaster-Carr

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Fitting Type

For Flange Pipe Size

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Number of Bolt Holes

Pressure Class

125

150

Flanged Connection Surface

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Thread Type

Pipe Material

Fitting Material

Pipe Schedule

For Use With

Sodium Carbonate (Soda Ash)

Sodium Hydroxide (Caustic Soda)

Connects To

Shape

Bolt Hole Diameter

Maximum Steam Pressure @ Temperature

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

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REACH

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DFARS Specialty Metals

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224 Products

About Pipe and Fittings

Measure your pipe and fittings to identify their pipe size, thread size, schedule, and thread type. Then, find compatible components.

Pipe and Pipe Fittings

Low-Pressure Stainless
Steel Threaded Pipe Flanges

Also known as Pressure Class 150 flanges, these corrosion-resistant flanges are designed for low-pressure pipe applications.

Low-Pressure Stainless Steel
Unthreaded Pipe Flanges

Bolt two same-size flanges together with a gasket to create an access point within a pipe line.

Thin-Wall Butt-Weld Stainless
Steel Unthreaded Pipe Fittings

Also known as Schedule 10 fittings, these are thin, lightweight, and corrosion resistant.

Low-Pressure Steel Threaded Pipe Flanges

These flanges are for low-pressure applications in noncorrosive environments.

FM-Approved Low-Pressure
Cast Iron Threaded Pipe Flanges

Suitable for use in fire-protection applications, these flanges are brittle and can be quickly opened with the strike of a sledge hammer.

Low-Pressure Steel Unthreaded Pipe Flanges

Bolt two flanges of the same size together with a gasket to create an access point in a pipe line.

FM-Approved Iron Pipe Fittings with Flanged Ends

FM approved, these fittings are suitable for use in fire-protection systems. All have flat-surface flanged ends that only mate to another same-size flat-surface flange, pump, or valve with a gasket to create an access point in a pipeline.

Low-Pressure Aluminum Threaded Pipe Flanges

Also known as Pressure Class 125 flanges, these are for use in low-pressure applications. Flanges are aluminum, which is lightweight with good corrosion resistance.

Aluminum Unthreaded Pipe Flanges

Use these unthreaded flanges in low-pressure applications. Also known as Pressure Class 125 flanges.

Drain, Waste, and Vent ABS
Pipe Flanges for Chemicals

Bolt two same-size flanges together with a gasket to create an access point within a line. Flanges 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.

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

Bolt two same-size flanges together with a gasket to create an access point within a line. Also known as Schedule 40 flanges, they are the industry standard for gravity-flow drain, waste, and vent (DWV) applications.

Expansion Joint Reducers with Flanged Ends

Connect different pipe sizes in your line while adding a point of flexibility between them. These expansion joints absorb movement between two connected pipes to reduce stress, vibration, and noise.

Quick-Clamp High-Vacuum Fittings for Stainless Steel Tubing

Quick-Clamp High-Vacuum
Fittings for Stainless Steel Tubing

Also known as KF, QF, and NW fittings, these fittings are for high-vacuum applications, such as vacuum coating and heat treating, leak testing, and analyzing gases.

Pipe and Pipe Fittings

Low-Pressure StainlessSteel Threaded Pipe Flanges

Low-Pressure Stainless SteelUnthreaded Pipe Flanges

Thin-Wall Butt-Weld StainlessSteel Unthreaded Pipe Fittings

Low-Pressure Steel Threaded Pipe Flanges

FM-Approved Low-PressureCast Iron Threaded Pipe Flanges

Low-Pressure Steel Unthreaded Pipe Flanges

FM-Approved Iron Pipe Fittings with Flanged Ends

Low-Pressure Aluminum Threaded Pipe Flanges

Aluminum Unthreaded Pipe Flanges

Drain, Waste, and Vent ABSPipe Flanges for Chemicals

Aboveground Standard-Wall PVC PipeFlanges for Drain, Waste, and Vent

Expansion Joint Reducers with Flanged Ends

Quick-Clamp High-Vacuum Fittings for Stainless Steel Tubing

Quick-Clamp High-VacuumFittings for Stainless Steel Tubing

Low-Pressure Stainless
Steel Threaded Pipe Flanges

Low-Pressure Stainless Steel
Unthreaded Pipe Flanges

Thin-Wall Butt-Weld Stainless
Steel Unthreaded Pipe Fittings

FM-Approved Low-Pressure
Cast Iron Threaded Pipe Flanges

Drain, Waste, and Vent ABS
Pipe Flanges for Chemicals

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

Quick-Clamp High-Vacuum
Fittings for Stainless Steel Tubing