3 1/2" Tube Fittings | McMaster-Carr

Filter by

System of Measurement

Shape

Material

Fitting Type

Pipe Size

Connects To

Tube Material

Fitting Connection

Wall Thickness

For Use With

Gender

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

REACH

RoHS

Thread Type

Maximum Vacuum @ Temperature

15 in. Hg @ 72° F

Relative Vacuum Rating

Standard

Maximum Temperature

Less than 200° F

Minimum Temperature

-49° F to 0° F

Maximum Pressure @ Temperature

Finish

Length

16 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.

For Use With: Air, Glass, Plastic Pellets, Resins, Wood Chips
Temperature Range: -10° to 180° F
Tubing: Galvanized Steel: Use with steel, galvanized steel
Steel: Use with steel

Use these fittings to create an air vacuum system without the hassle of brazing and welding. Insert two fittings into a clamp (sold separately) and tighten to form a secure seal.

Galvanized steel fittings have fair corrosion resistance. Fittings without a finish should only be used in noncorrosive environments.

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

Straight Adapters, Tube × Male Threaded Pipe

				Galvanized Steel		Steel
For Tube OD	Pipe Size	Max. Pressure	Max. Vacuum		Each		Each
NPT Threads
3 1/2"	3 1/2	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	000000	0000000	000000

Straight Adapters, Tube × Female Threaded Pipe

				Galvanized Steel		Steel
For Tube OD	Pipe Size	Max. Pressure	Max. Vacuum		Each		Each
NPT Threads
3 1/2"	3 1/2	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	0000000	0000000	0000000

Straight Reducers, Tube

				Galvanized Steel		Steel
For Tube OD (A)	For Tube OD (B)	Max. Pressure	Max. Vacuum		Each		Each
3 1/2"	2 1/8"	15 psi @ 72° F	15 in. of Hg @ 72° F	0000000	000000	0000000	000000
3 1/2"	2 1/2"	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	00000	0000000	00000

90° Elbow Connectors, Tube

			Galvanized Steel		Steel
For Tube OD	Max. Pressure	Max. Vacuum		Each		Each
3 1/2"	15 psi @ 72° F	15 in. of Hg @ 72° F	0000000	000000	0000000	000000

45° Elbow Connectors, Tube

			Galvanized Steel		Steel
For Tube OD	Max. Pressure	Max. Vacuum		Each		Each
3 1/2"	15 psi @ 72° F	15 in. of Hg @ 72° F	0000000	000000	0000000	000000

Tee Connectors, Tube

			Galvanized Steel		Steel
For Tube OD	Max. Pressure	Max. Vacuum		Each		Each
3 1/2"	15 psi @ 72° F	15 in. of Hg @ 72° F	0000000	0000000	0000000	000000

45° Tee Connectors, Tube

			Galvanized Steel		Steel
For Tube OD	Max. Pressure	Max. Vacuum		Each		Each
3 1/2"	15 psi @ 72° F	15 in. of Hg @ 72° F	0000000	000000	0000000	0000000

Email Us

How to Identify and Measure Fittings

Vacuum Fittings for Steel Tubing