Valve Checks | McMaster-Carr

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	Pipe Size Pipe Size

2
2 1/2
3
4
5
6
8
10

	Thread Type Thread Type

	For Use With For Use With

	Connection Style Connection Style

	Threaded
	Barbed
	Push to Connect
	Socket Connect
	Flanged
	Yor-Lok
	Clamp On
	Threaded Union
	Solder Connect
	Butt Weld
	Quick Clamp
	Unthreaded
	Quick Turn

	Body Material Body Material

Stainless
Steel

	Valve Type Valve Type

Reduced
Pressure
Zone

	Connection Type Connection Type


Pipe	Tube

Hose

	Check Valve Type Check Valve Type

Spring-Loaded Piston

Spring-Loaded Ball

	Minimum Opening Pressure Minimum Opening Pressure

	Shape Shape

	Seal Material Seal Material

Stainless Steel

Plastic

EPDM Rubber/Stainless
Steel

	Maximum Pressure Maximum Pressure

50 psi @ 65Â° F

10 psi @ 70Â° F

15 psi @ 70Â° F

25 psi @ 70 Â° F

125 psi @ 70Â° F

145 psi @ 70Â° F

150 psi @ 70Â° F

200 psi @ 70Â° F

220 psi @ 70Â° F

275 psi @ 70Â° F

300 psi @ 70Â° F

400 psi @ 70Â° F

500 psi @ 70Â° F

600 psi @ 70Â° F

1,000 psi @ 70Â° F

1,500 psi @ 70Â° F

1,900 psi @ 70Â° F

2,000 psi @ 70Â° F

2,200 psi @ 70Â° F

2,300 psi @ 70Â° F

3,000 psi @ 70Â° F

100 psi @ 75Â° F

720 psi @ 100Â° F

725 psi @ 100Â° F

1,000 psi @ 100Â° F

1,500 psi @ 100Â° F

1,975 psi @ 100Â° F

60 psi @ 140Â° F

150 psi @ 140Â° F

175 psi @ 140Â° F

20 psi @ 150Â° F

100 psi @ 150Â° F

145 psi @ 150Â° F

200 psi @ 150Â° F

300 psi @ 150Â° F

400 psi @ 150Â° F

600 psi @ 150Â° F

400 psi @ 170Â° F

25 psi @ 176Â° F

175 psi @ 180Â° F

400 psi @ 180Â° F

150 psi @ 200Â° F

230 psi @ 200Â° F

110 psi @ 250Â° F

140 psi @ 250Â° F

175 psi @ 250Â° F

210 psi @ 250Â° F

200 psi @ 300Â° F

755 psi @ 300Â° F

400 psi @ 350Â° F

580 psi @ 350Â° F

150 psi @ 400Â° F

	Gender Gender

	Flow Coefficient (Cv) Flow Coefficient (Cv)

0.081
0.09
0.1
0.14
0.16
0.17
0.19
0.2
0.22
0.23
0.25
0.26
0.29
0.4
0.41
0.47
0.5
0.54
0.56
0.6
0.7
0.75
0.8
0.83
0.85
0.93
1
1.1
1.15
1.2
1.21
1.3
1.31
1.4
1.47
1.53
1.6
1.68
1.85
1.9
1.954
2
2.09
2.1
2.2
2.3
2.4
2.5
2.69
2.71
2.87
3
3.1
3.3
3.4
3.48
3.5
3.53
3.584
3.6
3.8
3.9
4
4.2
4.3
4.4
4.48
4.55
4.6
4.7
4.78
4.8
5
5.08
5.2
5.24
5.4
5.41
5.5
5.7
6
6.01
6.1
6.3
6.4
6.463
6.56
6.6
6.7
7
7.2
7.5
7.7
8
8.1
8.6
8.86
8.96
9
9.088
9.36
9.5
10
11
11.9
12
12.4
12.5
12.7
13
14.09
14.1
14.3
15.67
16
16.3
16.9
17
18
18.8
19
20
20.9
21
21.83
22
22.34
24
24.16
25
26
27.4
28
30
31
32
33.3
35
35.84
37
37.84
38
39
39.1
42.5
44
45
48
49
50
51.9
52
54
56
59
60
60.7
63
64
65
69
70
72
76
77
77.9
81
82.19
89
90
92
94
98.4
100
102
110
111
120
130
131
141
144
150
156
158
163
168
170
171
185
190
191
192
193
225.4
240
280
288
291
292
297
340
390
468
495
520
590
705
735
850
870
1,060
1,600
1,795
1,880
2,400
2,940
Not Rated

	Valve Function Valve Function

Backflow Prevention

Pressure Relief

Flow Adjustment

Directional Control

	Actuation Actuation

	End-to-End Length End-to-End Length

	Mounting Orientation Mounting Orientation

	Fitting Type Fitting Type

	Spring Material Spring Material

Stainless Steel

Plastic

	For Tube OD For Tube OD

	Piston Material Piston Material

Plastic

Stainless Steel

Rubber

	Color Color

	White
	Dark Gray
	Gray
	Black
	Clear
	Green
	Off-White
	Black/Blue
	Light Gray
	Tan
	White/Black
	Black/Green
	Black/Red
	White/Gray

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847 Products

Flow-Control Valves

Check Valves

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

Vacuum-Breaking Valves

Vacuum-Breaking Valves

Also known as vacuum breakers, these valves have vents that open when pressure drops to relieve vacuum conditions and prevent backward suction from drawing liquid into upstream piping.

Two-Stage
Backflow-Prevention Valves

For maximum protection from system contamination, these valves consist of a primary check valve and a secondary check valve. If the primary check fails to close when flow stops or reverses, the secondary check valve engages to prevent backflow.

Flow-Adjustment Valves

Flow-Adjustment Valves

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

Other Valve Checks

Pipeline Flame Arresters

Pipeline Flame Arresters

To prevent flashback in flammable gas pipelines, an internal flame-arresting element absorbs the heat from a fire to extinguish the flame.

Backflow-Prevention Valves
with Clamps for Sump Pumps

Prevent dirty water from flowing back to your pump.

Hydraulic Valves

Control the speed, direction, and pressure of fluid in a hydraulic system.

Compressed Air Control Valves

Air-Release Valves

Eliminate air pockets to maintain consistent flow and prevent water surges that can damage equipment.

Floor Drain Backflow Preventers

Floor Drain Backflow Preventers

Put an end to water damage from backed-up sewers. When water backs up, the rubber float will rise to seal off the drain. When water recedes, the float will drop for normal drainage.

Frostproof Vacuum-Breaking
Valves with Garden Hose Threads

Frostproof Vacuum-Breaking Valves with Garden Hose Threads

Stop backward flow in outdoor faucets with garden hose thread (GHT) outlets.

Welding Gas Flashback Arresters

Flashback arresters extinguish flames and have a check valve to stop reverse gas flow.

Welding Gas Check Valves

Stop the reverse flow of gas in your torch or regulator. Check valves do not stop flashbacks.

Arresters for Flammable Vapors

Minimize fire hazard from flammable vapors. Mount arresters on your vent pipe to stop flames from traveling back to your tank.

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The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)