2 1/8" Tube Adapters | McMaster-Carr

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	Copper Tube Size Copper Tube Size

1/2
3/4
1
1 1/4
1 1/2
2
2 1/2
3
4

	Type Type


Adapter	Clamp

Connector	Flange

Reducer	Reducing Adapter

Union

	Material Material

	Pipe Size Pipe Size

	Shape Shape


45° Elbow	90° Elbow

180° Bend	Straight

Tee	Wye

	Connection Style Connection Style

	Socket Connect Type Socket Connect Type


Solder	Press

	System of Measurement System of Measurement

Inch

	For Tube OD For Tube OD	Show

2 1/8"

	For Tube OD For Tube OD	Hide

	Connection Type Connection Type


Pipe	Tube

	Gender Gender

Male

Female

	For Use With For Use With

	For Copper Tube Type For Copper Tube Type

	For Tube Material For Tube Material

Copper

Plastic

Steel

	Thread Type Thread Type

NPT

	Maximum Pressure Maximum Pressure

	Maximum Temperature Maximum Temperature

100° to 249° F

250° to 499° F

500° to 999° F

	Minimum Temperature Minimum Temperature

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

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

RoHS Compliant with
Exemptions

	Environment Environment

Food and Beverage

	Specifications Met Specifications Met

ASME

MSS

NSF/ANSI

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

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143 Products

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.

Medium-Pressure Pipe Fittings
for Joining Dissimilar Metals

Use these unions to connect different metals in a piping or plumbing system. They have a gasket with a plastic sleeve that inhibits destructive corrosion.

Solder-Connect Fittings for Copper Tubing

Solder these fittings to tubing for a permanent, leak-tight connection. They are also known as sweat fittings.

Cleaned and Bagged Solder-Connect
Fittings for Copper Tubing

When cleanliness is crucial to your application, choose these fittings that are individually cleaned and bagged to prevent contamination.

Press-Connect Fittings for Copper Tubing

Crimp these fittings to copper tubing with a crimping tool for a leak-tight connection that doesn’t require heat or soldering. They are comparable to Viega ProPress fittings.

Brass Push-to-Connect Fittings for Copper Tubing

Choose these metal fittings when you need better durability than our plastic push-to-connect fittings.

Vacuum Fittings for Steel Tubing

Use these fittings in an air vacuum system to avoid the hassle of brazing and welding. Insert two fittings into a clamp and tighten to form a secure seal in steel tubing.