Concentric Pipe Reducers | McMaster-Carr

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1,117 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

Stainless Steel Unthreaded Pipe and Fittings

Medium-Pressure Stainless Steel Butt-Weld Pipe Fittings

Medium-Pressure Stainless Steel Butt-Weld Pipe Fittings

Beveled ends help create strong welds for maximum flow in medium-pressure lines

Low-Pressure Stainless Steel Butt-Weld Pipe Fittings

Low-Pressure Stainless Steel Butt-Weld Pipe Fittings

Beveled ends help create strong welds for maximum flow in low-pressure lines

Iron and Steel Unthreaded Pipe and Fittings

Low-Pressure Iron and Steel Butt-Weld Pipe Fittings

Low-Pressure Iron and Steel Butt-Weld Pipe Fittings

Beveled ends help create strong welds for maximum flow in low-pressure lines

High-Pressure Iron and Steel Butt-Weld Pipe Fittings

High-Pressure Iron and Steel Butt-Weld Pipe Fittings

Beveled ends help create strong welds for maximum flow in high-pressure lines

Plastic Pipe and Fittings

Standard-Wall Plastic Pipe Fittings for Water

Standard-Wall Plastic Pipe Fittings for Water

The industry standard for low-pressure water lines; also known as Schedule 40

CPVC Pipe Fittings for Chemicals

CPVC Pipe Fittings for Chemicals

Withstand salt solutions, acids, and other harsh substances

Thick-Wall Plastic Pipe Fittings for Water

Thick-Wall Plastic Pipe Fittings for Water

Withstand heavy duty applications, such as water processing; also known as Schedule 80

Plastic Barbed Pipe Fittings for Water

Plastic Barbed Pipe Fittings for Water

Clamp to semi-flexible plastic pipe to connect lines up to 200 psi; also called insert fittings

Plastic Pipe Fittings for Oil

Plastic Pipe Fittings for Oil

Won’t deteriorate when exposed to oil

UV-Resistant Polypropylene Pipe Fittings for Chemicals

UV-Resistant Polypropylene Pipe Fittings for Chemicals

Withstand sunlight as well as acids, solvents, and other chemicals

High-Temperature PTFE Pipe Fittings for Harsh Chemicals

High-Temperature PTFE Pipe Fittings for Harsh Chemicals

Withstand the widest temperature range of our plastic pipe for chemicals; known as Schedule 80

Crack-Resistant PFA Pipe Fittings for Harsh Chemicals

Crack-Resistant PFA Pipe Fittings for Harsh Chemicals

Resist cracking in heavy duty chemical flow processes; also known as Schedule 80

Clear-View Standard-Wall Plastic Pipe Fittings for Water

Clear-View Standard-Wall Plastic Pipe Fittings for Water

See inside low-pressure plumbing and water supply lines; also known as Schedule 40

Flame-Retardant High-Purity PVDF Pipe Fittings for Harsh Chemicals

Flame-Retardant High-Purity PVDF Pipe Fittings for Harsh Chemicals

Handle acids and organic solvents without leaching contaminants into your line

High-Purity Polypropylene Pipe Fittings for Drinking Water

High-Purity Polypropylene Pipe Fittings for Drinking Water

Polished to an ultra-smooth finish that won't leach contaminants or accumulate particles

Plastic Pipe Fittings for Gasoline

Plastic Pipe Fittings for Gasoline

Connect gasoline fuel lines to machines and equipment

Fiberglass Pipe Fittings for Chemicals

Fiberglass Pipe Fittings for Chemicals

Our strongest plastic fittings for chemical-process applications, such as metal treatment

Aluminum Unthreaded Pipe and Fittings

Low-Pressure Aluminum Butt-Weld Pipe Fittings

Low-Pressure Aluminum Butt-Weld Pipe Fittings

Beveled ends help create strong welds for maximum flow in low-pressure lines

Medium-Pressure Aluminum Butt-Weld Pipe Fittings

Medium-Pressure Aluminum Butt-Weld Pipe Fittings

Beveled ends help create strong welds for maximum flow in medium-pressure lines

High-Pressure Aluminum Butt-Weld Pipe Fittings

High-Pressure Aluminum Butt-Weld Pipe Fittings

Beveled ends help create strong welds for maximum flow in high-pressure lines

Drain, Waste, and Vent Pipe and Fittings

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

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

The industry standard for gravity-flow drain, waste, and vent applications; known as Schedule 40

Underground Drain, Waste, and Vent PVC Pipe Fittings for Water

Underground Drain, Waste, and Vent PVC Pipe Fittings for Water

Thin walls give extra room for high-flow applications, such as underground storm drainage lines

Drain, Waste, and Vent ABS Pipe Fittings for Chemicals

Drain, Waste, and Vent ABS Pipe Fittings for Chemicals

An economical choice for gravity-flow chemical-waste systems; also known as Schedule 40

Drain, Waste, and Vent ABS Pipe Flanges for Chemicals

Drain, Waste, and Vent ABS Pipe Flanges for Chemicals

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

Flame-Retardant Drain, Waste, and Vent CPVC Pipe Fittings for Chemicals

Flame-Retardant Drain, Waste, and Vent CPVC Pipe Fittings for Chemicals

UL rated for flame retardance and NSF certified for use in gravity-flow corrosive-waste systems

Iron and Steel Threaded Pipe and Fittings

Low-Pressure Threaded Pipe Fittings for Joining Dissimilar Metals

Low-Pressure Threaded Pipe Fittings for Joining Dissimilar Metals

A plastic sleeve prevents corrosion when connecting different types of metal

Other Products

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

Pipe Stub Ends

Connect a pipe flange to a pipe without needing to weld it in place

Pipe Expansion Joints

Pipe Expansion Joints

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

Pipe Traps

Create a seal that prevents the backflow of gas

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)