Pipe Fittings for Glass | McMaster-Carr

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
2 1/8"	2	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	000000	0000000	000000
2 1/2"	2 1/2	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	00000	0000000	00000
3"	3	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	00000	0000000	00000
3 1/2"	3 1/2	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	00000	0000000	00000
4"	4	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	00000	0000000	00000
5"	5	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	000000	0000000	00000
6"	6	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
2 1/8"	2	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	000000	0000000	000000
2 1/2"	2 1/2	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	00000	0000000	00000
3"	3	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	00000	0000000	00000
3 1/2"	3 1/2	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	000000	0000000	000000
4"	4	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	000000	0000000	00000
5"	5	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	000000	0000000	000000
6"	6	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	000000	0000000	000000

Straight Adapters with Cap, Tube × Male Threaded Pipe

Adapters with cap allow you to insert tubing to create a temporary connection.

NPT Threads
For Tube OD	Pipe Size	Material	Max. Pressure	Max. Vacuum		Each
1 1/2"	2	Zinc	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	000000
2"	2	Zinc	15 psi @ 72° F	15 in. of Hg @ 72° F	00000000	00000

Clamps for Vacuum Fittings for Steel Tubing

Use these clamps to connect vacuum tube fittings. Insert two fittings into a clamp and tighten to form a secure seal.

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

Bolt Clamps

For Use With: Air, Glass, Plastic Pellets, Resins, Wood Chips
Temperature Range: Neoprene Rubber Gaskets: -20° to 190° F
Silicone Rubber Gaskets: -100° to 500° F
Tubing: Use with steel

Bolt clamps have a stainless steel strip that provides an escape route for electrostatic buildup when used in a fully-grounded system. They have fair corrosion resistance.

				Neoprene Rubber Gaskets		Silicone Rubber Gaskets
For Tube OD	Material	Max. Pressure	Max. Vacuum		Each		Each
1 1/2"	Galvanized Steel	15 psi @ 72° F	15 in. of Hg @ 72° F	0000000	000000	0000000	000000
1 3/4"	Galvanized Steel	15 psi @ 72° F	15 in. of Hg @ 72° F	0000000	00000	0000000	00000
2"	Galvanized Steel	15 psi @ 72° F	15 in. of Hg @ 72° F	0000000	00000	0000000	00000
2 1/8"	Galvanized Steel	15 psi @ 72° F	15 in. of Hg @ 72° F	0000000	00000	0000000	00000
2 1/4"	Galvanized Steel	15 psi @ 72° F	15 in. of Hg @ 72° F	0000000	00000	0000000	00000
2 1/2"	Galvanized Steel	15 psi @ 72° F	15 in. of Hg @ 72° F	0000000	00000	0000000	00000
3"	Galvanized Steel	15 psi @ 72° F	15 in. of Hg @ 72° F	0000000	00000	0000000	00000
5"	Galvanized Steel	15 psi @ 72° F	15 in. of Hg @ 72° F	0000000	00000	0000000	00000
6"	Galvanized Steel	15 psi @ 72° F	15 in. of Hg @ 72° F	0000000	00000	0000000	00000
8"	Galvanized Steel	15 psi @ 72° F	15 in. of Hg @ 72° F	0000000	00000	0000000	000000
10"	Galvanized Steel	15 psi @ 72° F	15 in. of Hg @ 72° F	0000000	00000	0000000	000000