Valves for Air | McMaster-Carr

0.01
0.013
0.02
0.03
0.038
0.04
0.05
0.06
0.07
0.08
0.081
0.09
0.095
0.1
0.11
0.12
0.15
0.156
0.17
0.18
0.19
0.2
0.21
0.22
0.23
0.24
0.25
0.26
0.28
0.29
0.292
0.3
0.31
0.35
0.37
0.38
0.4
0.42
0.43
0.44
0.45
0.47
0.48
0.5
0.51
0.52
0.53
0.54
0.55
0.56
0.58
0.6
0.63
0.64
0.65
0.7
0.72
0.73
0.75
0.76
0.77
0.78
0.8
0.82
0.83
0.85
0.87
0.88
0.9
0.92
0.93
0.94
1
1.02
1.03
1.06
1.1
1.15
1.2
1.21
1.24
1.3
1.31
1.35
1.4
1.43
1.47
1.5
1.57
1.6
1.68
1.7
1.84
1.85
1.9
1.93
1.954
1.96
2
2.09
2.1
2.2
2.3
2.4
2.5
2.6
2.61
2.64
2.67
2.7
2.74
2.8
2.87
2.9
3
3.1
3.2
3.24
3.26
3.3
3.47
3.48
3.5
3.53
3.584
3.6
3.8
3.9
4
4.08
4.16
4.2
4.3
4.4
4.48
4.5
4.6
4.7
4.78
4.8
5
5.02
5.1
5.2
5.24
5.3
5.4
5.5
5.6
5.7
5.9
6
6.01
6.1
6.3
6.4
6.463
6.5
6.56
6.6
6.7
6.8
6.9
7
7.05
7.2
7.3
7.4
7.5
7.7
7.8
8
8.1
8.2
8.3
8.4
8.61
8.8
8.86
9
9.088
9.1
9.2
9.3
9.5
9.6
9.7
9.8
10
10.4
10.57
10.7
11
11.1
11.2
11.6
11.9
12
12.1
12.2
12.5
12.7
12.83
12.9
13
14
14.24
14.3
15
15.4
15.5
15.67
15.85
16
16.3
16.5
16.8
17
17.6
18
18.6
18.8
19
19.3
19.72
20
21
21.83
22
22.1
23
24
25
26
27
28
29.71
29.75
30
30.69
30.8
31
32
32.3
33
33.3
34
34.4
34.8
35
36
37
37.84
38
38.5
39
42.5
43
43.76
43.81
44
45
46
47
48
48.5
48.58
49
50
50.1
51
52
52.2
53
54
56
57
59
60
61
63
64
65
66
68
69
70
71
72
74.6
76
77
80
80.9
81
82
84
85
89
90
91
92
92.4
93
94
95
97
100
103.7
105
108
110
111
112
112.5
115
119
120
125
129
130
131
133.4
135
137
138
140
142
144
144.4
149
150
156
160
168
170
174
175
180
185
191
192
193
196
200
201.3
202.7
206.8
211
215
220
227
228
230
240
241
245
248
250
255.2
257
260
268.4
270
277
280
287
290
292
297
300
302
307
309.2
313.2
319
335
337
340
348.6
350
360
370
376
386
390
395
400
411
420
451
468
469
480
500
504.6
510
520
536
550
563.8
580
590
596.2
600
605
629
631.4
685
720
735
740
750
820
835
850
860
880
896.5
945
1,009.5
1,013
1,018
1,020
1,022
1,060
1,150
1,245
1,305.5
1,366
1,400
1,577.3
1,579
1,600
1,620
1,622
1,780
1,800
1,880
1,900
2,110
2,150
2,250
2,400
2,500
2,901
2,940
3,136
5,470
Not Rated

	Seat Material Seat Material

Plastic

Rubber

	Fitting Type Fitting Type

3,407 Products

Flow Control

On/Off Valves

Quickly start and stop flow with these valves.

Gradual On/Off Valves

Also known as gate valves, these gradually open and close to prevent system damage from suddenly starting and stopping flow.

Tap Valves

Also known as saddle valves and humidifier valve clamps, these self-piercing valves allow you to tap existing copper tubing lines to redirect a small amount of liquid for on/off control of a secondary line.

Actuated On/Off Valves

Driven by compressed air or electricity, these valves automatically start and stop flow.

Flow-Adjustment Valves

Gradually open and close these valves to adjust and regulate flow.

Diverting Valves

Divert flow between multiple ports.

Backflow-Prevention Valves

Stop backward flow to prevent system contamination.

Flow-Control Orifices

Also known as flow restrictors and precision orifice valves, these are used to throttle, vent, bleed, or regulate the flow of liquid and gas.

Other Valves

Drainage Valves

Also known as stop cocks, install these valves on your tank for easy draining.

Pressure and Vacuum Control Valves

Ensure safe, consistent, and efficient pressure in pipelines and tanks. These valves are available in relief, pop-safety, pressure-regulating, and air-release styles.

Laboratory Valves and Fittings

Quick-Disconnect Hose
Couplings for Air and Water

Typically used on small-diameter hose up to 1". To connect, push the plug into the socket. The compact design makes these couplings sleeker and easier to handle than cam-and-groove and claw hose couplings.