Reducing Pipe Flanges | McMaster-Carr

Filter by

Fitting Type

Expansion Joint

Flange

Reducer

System of Measurement

Pipe Size

For Flange Pipe Size

Material

Fitting Connection

Pressure Class

Flange OD

Number of Bolt Holes

Thread Type

NPT

Flanged Connection Surface

Bolt Circle Diameter

Fitting Material

Pipe Material

For Use With

Sodium Carbonate (Soda Ash)

Sodium Hydroxide (Caustic Soda)

Steam

Water

Connects To

Pipe

Pipe Schedule

Bolt Hole Diameter

Gender

Shape

Bolt Diameter

Export Control Classification Number (ECCN)

2B999

EAR99

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

Yes

DFARS Specialty Metals

RoHS

REACH

153 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 Fittings

Iron and Steel Threaded Pipe and Fittings

Low-Pressure Iron and Steel Threaded Pipe Flanges

Create an access point in lines up to 285 psi; also known as Class 150 flanges

37 products

FM-Approved Low-Pressure Iron and Steel Threaded Pipe Flanges

Add an access point to fire water mains and sprinkler systems

5 products

Stainless Steel Threaded Pipe and Fittings

Low-Pressure Stainless Steel Threaded Pipe Flanges

Create an access point in lines up to 290 psi; also known as Class 150 flanges

49 products

Iron and Steel Unthreaded Pipe and Fittings

Low-Pressure Iron and Steel Unthreaded Pipe Flanges

Create an access point in lines up to 230 psi

9 products

FM-Approved Low-Pressure Iron and Steel Flanged-End Pipe Fittings

Mate with flat-surface flanges, pumps, and valves to add an access point in fire-protection systems

4 products

Stainless Steel Unthreaded Pipe and Fittings

Low-Pressure Stainless Steel Unthreaded Pipe Flanges

Create an access point in lines up to 230 psi

17 products

Aluminum Threaded Pipe and Fittings

Low-Pressure Aluminum Threaded Pipe Flanges

Create an access point in lines up to 150 psi; also known as Class 125 flanges

10 products

Drain, Waste, and Vent Pipe and Fittings

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

Create an access point in gravity-flow drain, waste, and vent lines; also known as Schedule 40

3 products

Drain, Waste, and Vent ABS Pipe Flanges for Chemicals

Add an access point in gravity-flow chemical-waste systems

3 products

Aluminum Unthreaded Pipe and Fittings

Low-Pressure Aluminum Unthreaded Pipe Flanges

Create an access point in lines up to 150 psi; also known as Class 125 flanges

2 products

Other Products

Pipe Expansion Joints

Reduce stress, vibration, and noise in piping systems by absorbing movement

14 products