Tube Fittings for Compressed Air

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43 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: Acetylene, Air, Butane, Compressed Air, Cutting Oil, Diesel Fuel, Fuel Oil, Gasoline, Helium, Hydraulic Fluid (Petroleum Base), Kerosene, Mineral Oil, Natural Gas, Nitrogen, Propane, Soap Solutions
Temperature Range: -10° to 400° F
Tubing: Use with seamless 316Ti or 321 stainless steel
Specifications Met: DIN 3861

Instead of a metal sleeve (ferrule), these fittings have a rubber sleeve that cushions tubing and absorbs vibration to maintain a tight seal, even when connected to large pumps. However, rubber sleeves can’t withstand temperatures as high as metal ones. To create the strong seal, tighten the included nut. These fittings are made of 316 stainless steel, so they have excellent corrosion resistance. They’re also known as flareless fittings. All meet DIN 3861, which is an international standard for compression tube fitting specifications.

BSPP and metric male threads have a gasket to prevent leaks.

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

Straight Adapters, Tube × Male Threaded Pipe

BSPP and Metric
Male Threads with
Gasket and Washer

For Tube
OD, mm	Wall Thickness, mm	Pipe Size	Thread Size	Thread Pitch, mm	Material	Gasket Material	Maximum Pressure		Each
NPT Threads
6	1	1/8	__	__	316 Stainless Steel	__	4,500 psi @ 72° F	00000000	000000
6	1	1/4	__	__	316 Stainless Steel	__	4,500 psi @ 72° F	00000000	00000
8	1	1/4	__	__	316 Stainless Steel	__	4,500 psi @ 72° F	00000000	00000
10	1	1/4	__	__	316 Stainless Steel	__	4,500 psi @ 72° F	00000000	000000
10	1	3/8	__	__	316 Stainless Steel	__	4,500 psi @ 72° F	00000000	000000
12	1.5	1/4	__	__	316 Stainless Steel	__	4,500 psi @ 72° F	00000000	000000
12	1.5	1/2	__	__	316 Stainless Steel	__	4,500 psi @ 72° F	00000000	000000
15	1.5	1/2	__	__	316 Stainless Steel	__	4,500 psi @ 72° F	00000000	000000
18	2	1/2	__	__	316 Stainless Steel	__	4,500 psi @ 72° F	00000000	000000
BSPP Threads
6	1	1/8	__	__	316 Stainless Steel	Fluoroelastomer Rubber	4,500 psi @ 72° F	00000000	00000
6	1	1/4	__	__	316 Stainless Steel	Fluoroelastomer Rubber	4,500 psi @ 72° F	00000000	00000
Metric Threads
8	1	__	M12	1.5	316 Stainless Steel	Fluoroelastomer Rubber	4,500 psi @ 72° F	00000000	000000
10	1	__	M14	1.5	316 Stainless Steel	Fluoroelastomer Rubber	4,500 psi @ 72° F	00000000	00000

Nuts

Nut

For Tube
OD, mm	Wall Thickness, mm	Nut Material	Maximum Pressure		Each
6	1	316 Stainless Steel	4,500 psi @ 72° F	00000000	000000
8	1	316 Stainless Steel	4,500 psi @ 72° F	00000000	00000
10	1	316 Stainless Steel	4,500 psi @ 72° F	00000000	00000
12	1.5	316 Stainless Steel	4,500 psi @ 72° F	00000000	00000
15	1.5	316 Stainless Steel	4,500 psi @ 72° F	00000000	00000
18	2	316 Stainless Steel	4,500 psi @ 72° F	00000000	00000

Nuts for Vibration-Resistant Compression Fittings for Stainless Steel Tubing

Nut

For Use With: Acetylene, Air, Butane, Diesel Fuel, Compressed Air, Cutting Oil, Fuel Oil, Gasoline, Hydraulic Fluid (Petroleum Base), Kerosene, Mineral Oil, Natural Gas, Helium, Nitrogen, Propane, Soap Solutions
Temperature Range: -10° to 400° F
Tubing: Use with seamless 316Ti or 321 stainless steel
Specifications Met: DIN 3861

Pair these nuts with vibration-resistant compression sleeves and fittings for a strong seal on stainless steel tubing. Made of 316 stainless steel, they have excellent corrosion resistance. All meet DIN 3861, which is an international standard for compression tube fitting specifications.

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

For Tube
OD, mm	Wall Thickness, mm	Nut Material	Sleeve Material	Maximum Pressure		Each
6	1	316 Stainless Steel	Fluoroelastomer Rubber	4,500 psi @ 72° F	00000000	000000
8	1	316 Stainless Steel	Fluoroelastomer Rubber	4,500 psi @ 72° F	00000000	00000
10	1	316 Stainless Steel	Fluoroelastomer Rubber	4,500 psi @ 72° F	00000000	00000
12	1.5	316 Stainless Steel	Fluoroelastomer Rubber	4,500 psi @ 72° F	00000000	00000
15	1.5	316 Stainless Steel	Fluoroelastomer Rubber	4,500 psi @ 72° F	00000000	00000
18	2	316 Stainless Steel	Fluoroelastomer Rubber	4,500 psi @ 72° F	00000000	00000

Air Chucks

Attach these chucks to your air hose so you can connect the hose to Schrader valves. Most often recognized from car and bike tires, Schrader valves are also commonly found on compressed air tanks and high-pressure hydraulic systems.

Chucks with a clip-on Schrader connection attach to the valve stem, so you don’t need to hold them as the valve fills.

Chucks with a sleeve-lock Schrader connection grab onto the valve by sliding the sleeve forward onto the valve. To disconnect, slide the sleeve back and pull out the valve.

Chucks with a threaded Schrader connection screw onto valves for a secure connection that you don’t need to hold in place.

Press-and-Hold Schrader Connection

	Inlet			Outlet
	For Thread Size	For Thread Type	Gender	Connection Style	Connection Type	Barbed Connection Type	Pipe Size	Thread Type	For Tube ID	Gender	Max. Pressure, psi	Material		Each
A	0.305"-32	Schrader	Female	Threaded	Pipe	__	1/4	NPT	__	Female	150	Metal	0000000	00000
B	0.305"-32	Schrader	Female	Threaded	Pipe	__	1/4	NPT	__	Female	150	Metal	0000000	00000
C	0.305"-32	Schrader	Female	Threaded	Pipe	__	1/4	NPT	__	Female	150	Metal	0000000	00000
D	0.305"-32	Schrader	Female	Barbed	Tube	Barbed	__	__	1/4"	Male	150	Metal	0000000	0000
D	0.305"-32	Schrader	Female	Barbed	Tube	Barbed	__	__	3/8"	Male	150	Metal	0000000	0000

Clip-On Schrader Connection

	Inlet			Outlet
	For Thread Size	For Thread Type	Gender	Connection Style	Connection Type	Barbed Connection Type	Pipe Size	Thread Type	For Tube ID	Gender	Max. Pressure, psi	Material		Each
E	0.305"-32	Schrader	Female	Threaded	Pipe	__	1/4	NPT	__	Female	150	Metal	0000000	000000
F	0.305"-32	Schrader	Female	Barbed	Tube	Barbed	__	__	1/4"	Male	150	Metal	0000000	00000

Sleeve-Lock Schrader Connection

	Inlet			Outlet
	For Thread Size	For Thread Type	Gender	Connection Style	Connection Type	Pipe Size	Thread Type	Gender	Max. Pressure, psi	Material		Each
G	0.305"-32	Schrader	Female	Threaded	Pipe	1/4	NPT	Female	120	Metal	000000	000000

Threaded Schrader Connection

	Inlet			Outlet
	Thread Size	Thread Type	Gender	Connection Style	Connection Type	Barbed Connection Type	For Tube ID	Gender	Max. Pressure, psi	Material		Each
H	0.305"-32	Schrader	Female	Barbed	Tube	Barbed	7/32"	Male	120	Metal	000000	00000

Couplers for High-Pressure Fill Valves

Fill tanks and recharge struts—these couplers join hose to high-pressure fill valves with Schrader threads.

Some couplers meet SAE AS4395, an automotive industry standard for flared fitting dimensions.

70° elbow couplers are angled to access hard-to-reach valves.

Couplers with a shut-off valve let you control the flow of air by hand. When used with Schrader valves that have a core, the core depressor pin in these couplers press valves open to let air flow in.

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

Schrader Female Threaded Hose × NPT Threaded Pipe

70° Elbow, Schrader
Female Threaded Hose ×
NPT Female Threaded Pipe

90° Elbow, Schrader Female
Threaded Hose × NPT
Threaded Male Pipe

Inlet
Thread Size	Pipe Size	Outlet Gender	Material	Max. Pressure, psi	Temp. Range, °F	Features		Each
70° Elbow
0.305"-32	1/8	Female	Brass	3,000	-20° to 250°	__	000000	000000
90° Elbow with a Shut-Off Valve
0.305"-32	1/8	Male	Brass	3,000	-40° to 160°	Core Depressor Pin	000000	00000

Schrader Female Threaded Hose × UN/UNF Male Flared Tube

Straight, Schrader
Female Threaded Hose ×
UN/UNF Male Flared Tube

70° Elbow, Schrader
Female Threaded Hose ×
UN/UNF Male Flared Tube

90° Elbow, Schrader
Female Threaded Hose ×
UN/UNF Male Flared Tube

Inlet		Outlet
Thread Size	Material	Thread Size	Material	Flared Angle	For Tube OD	Material	Max. Pressure, psi	Temp. Range, °F	Features	Specifications Met		Each
Straight
0.305"-32	Zinc-Plated Steel	7/16"-20	Stainless Steel	37°	1/4"	__	5,000	-20° to 250°	__	SAE AS4395	000000	000000
70° Elbow
0.305"-32	__	7/16"-20	__	37°	1/4"	Brass	5,000	Not Rated	__	__	000000	00000
90° Elbow with a Shut-Off Valve
0.305"-32	__	3/8"-24	__	37°	3/16"	Brass	3,000	-40° to 160°	Core Depressor Pin	SAE AS4395	000000	00000
0.485"-26	__	3/8"-24	__	37°	3/16"	Brass	3,000	-40° to 160°	Core Depressor Pin	__	000000	00000

Air Flow Check Valves

Push-to-Connect Female
Inlet × Push-to-Connect
Female Outlet

Valves open to allow flow in one direction and close when flow stops or reverses.

Valves with push-to-connect ports are for use with plastic or soft metal tubing. Insert tubing into the port.

Flow coefficient (Cv) is a measurement that indicates how much airflow can pass through a valve.

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

Push-to-Connect Female Inlet × Push-to-Connect Female Outlet

						Overall
For Inlet Tube OD	For Outlet Tube OD	Flow Coefficient (Cv)	Max. Pressure, psi	Min. Opening Pressure, psi	Temp. Range, °F	Lg.	Dia.	Color		Each
Nylon Plastic Body
5/32"	5/32"	0.14	145	7	32° to 158°	1 1/2"	5/8"	Black	000000	000000
1/4"	1/4"	0.16	145	7	32° to 158°	1 5/8"	3/4"	Black	000000	00000
5/16"	5/16"	0.93	145	7	32° to 158°	2 1/16"	3/4"	Black	000000	00000
3/8"	3/8"	Not Rated	145	7	32° to 158°	2 1/2"	15/16"	Black	000000	00000
4mm	4mm	0.14	145	7	32° to 158°	38.1mm	15.9mm	Black	000000	00000
6mm	6mm	0.16	145	7	32° to 158°	41.3mm	15.9mm	Black	000000	00000
8mm	8mm	0.93	145	7	32° to 158°	51mm	19mm	Black	000000	00000
10mm	10mm	Not Rated	145	7	32° to 158°	63.5mm	23.8mm	Black	000000	00000
12mm	12mm	Not Rated	145	7	32° to 158°	66.7mm	23.8mm	Black	000000	00000