Plumbing
Plumbing Valves
Check Valves and Backflow Preventers
Check Valves
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Price

Under $10 Under $10 (2)
$10 - $15 $10 - $15 (20)
$15 - $20 $15 - $20 (13)
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Mechanism and Body Design

Inline Inline (24)
Inline Ball Inline Ball (18)
Inline Ball Cone Inline Ball Cone (72)
Inline Disc Inline Disc (12)
Inline Double Disc Inline Double Disc (10)
Inline Piston Inline Piston (58)
Inline Poppet (6)

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Inline Spring (106)

Inline Spring Piston (3)

Inline Spring Swing (1)

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Inline Swing (151)

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Swing (12)

Y (10)

Y Swing (34)
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Connection Type

Barb x Barb Barb x Barb (18)
Clamp x Clamp Clamp x Clamp (2)
Compression x Compression Compression x Compression (3)
Compression x Solvent Weld Compression x Solvent Weld (2)
FIPT x FIPT FIPT x FIPT (5)
Flange x Flange Flange x Flange (42)
Flanged Wafer x Flanged Wafer (12)

Flare x Flare (1)

FNPT (4)

FNPT x FNPT (293)

FNPT x Male Flare (1)

FNPT x MNPT (3)

FNPT x Socket (34)

MNPT x FNPT (27)

MNPT x MNPT (15)

Press x Press (18)

Push x BSPT (3)

Push x MNPT (1)

Push x Push (11)

Push-Fit (1)

Slip Socket (3)

Slip x Slip (8)

Socket Weld End (1)

Socket x Socket (24)

Socket/Threaded x Socket/Threaded (10)

Solvent Weld x Solvent Weld (8)

Spigot x Spigot (7)

Sweat x Sweat (39)
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Pipe or Tube Size

1/8 in 1/8 in (23)
3/16 in 3/16 in (4)
1/4 in 1/4 in (57)
5/16 in 5/16 in (3)
3/8 in 3/8 in (49)
3/8 in x 1/4 in 3/8 in x 1/4 in (2)
1/2 in (81)

3/4 in (65)

1 in (64)

1 1/4 in (39)

1 1/2 in (58)

2 in (73)

2 1/2 in (9)

3 in (34)

4 in (17)

6 in (10)

8 in (3)

1 1/4 in or 1 1/2 in (4)
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Cracking Pressure

0 psi 0 psi (2)
0.1 psi 0.1 psi (7)
0.25 psi 0.25 psi (10)
0.3 psi 0.3 psi (3)
0.300 to 1.250 psi 0.300 to 1.250 psi (21)
0.33 psi 0.33 psi (11)
0.363 psi (1)

0.5 psi (131)

0.500 psi (2)

0.500 to 0.750 psi (8)

0.725 psi (6)

0.750 to 1.000 psi (96)

1 psi (7)

1.0 psi (97)

1.000 to 1.500 psi (8)

1.046 psi (7)

1.5 psi (1)

1.7 psi (2)

1.734 psi (2)

2 psi (2)

2.0 psi (6)

2.000 to 3.000 psi (10)

2.601 psi (4)

3 psi (2)

3.0 psi (36)

3.5 psi (6)

3.6 psi (6)

4.3 psi (4)

5.6 psi (1)

8.0 psi (3)

8.5 psi (1)

8.500 psi (1)

10.0 psi (2)

13 psi (1)

24.0 psi (2)

43.0 psi (1)

127 psi (1)

128 psi (1)

129 psi (1)

130 psi (1)

131 psi (1)

132 psi (1)
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Seal Material

304 Stainless Steel 304 Stainless Steel (6)
304 Stainless Steel, Graphite 304 Stainless Steel, Graphite (8)
Alcryn Alcryn (1)
Brass Brass (34)
Bronze Bronze (78)
Buna-N Buna-N (80)
Chrome, Cobalt (18)

EPDM (108)

FKM (10)

Fluorocarbon (1)

FPM (5)

Metal (17)

NBR (7)

Neoprene (7)

Nitrile (8)

PTFE (34)

PTFE/PTFE+15% Glass Fiber/PTFE+ 25%Carbon/TFM1600 (1)

Rubber (5)

Viton (91)
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Seat Material

ABS ABS (1)
Brass Brass (81)
Brass, Electroless Nickel Brass, Electroless Nickel (2)
Bronze Bronze (116)
Buna-N Buna-N (26)
Cast Iron Cast Iron (1)
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Composite (1)

EPDM (57)

FKM (15)

Fluorocarbon (1)

FPM (5)

Glass Filled Polypropylene (8)

Lead Free Copper Silicone Alloy (1)

Metal (8)

NBR (11)

Nitrile (3)

Nylon (6)

Polypropylene (6)

PTFE (6)

PVC (40)

RPTFE (34)

Stainless Steel (28)

Stellite (8)

Viton (42)
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Spring Material

302 Stainless Steel 302 Stainless Steel (3)
304 Stainless Steel 304 Stainless Steel (18)
316 Stainless Steel 316 Stainless Steel (33)
Bronze Bronze (13)
Inconel X-750 Inconel X-750 (2)
PFA PFA (3)
Stainless Steel (226)
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Application - Valves

Backwater, Sanitary Backwater, Sanitary (1)
Beverage Beverage (1)
Compressed Air Compressed Air (5)
Corrosives Corrosives (15)
General Purpose General Purpose (465)
General Purpose, Pumps General Purpose, Pumps (35)
General Use (12)

High Pressure (3)

Process Piping (41)

Pumps (16)
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Max. Water Pressure - Valves

130 Degrees F 130 Degrees F (3)
125 psi 125 psi (43)
150 psi 150 psi (8)
175 psi 175 psi (6)
200 psi 200 psi (76)
250 psi 250 psi (13)
300 psi (14)

400 psi (52)

500 psi (50)

580 psi (3)

800 psi (5)

1,200 psi (6)

4500 psi (1)

5800 psi (2)

4.30 psi @ 130 Degrees F (2)

25 psi @ 130 Degrees F (4)

50 psi @ 130 Degrees F (3)

100 psi @ 73 Degrees F (2)

100 psi @ 75 Degrees F (4)

100 psi @ 77 Degrees F (3)

125 psi @ 75 Degrees F (1)

150 psi @ 120 Degrees F (8)

150 psi @ 70 Degrees F (25)

150 psi @ 72 Degrees F (1)

150 psi @ 73 Degrees F (6)

150 psi @ 77 Degrees F (4)

200 psi @ 150 Degrees F (52)

200 psi @ 200 Degrees F (5)

200 psi @ 250 Degrees F (17)

200 psi @ 73 Degrees F (6)

235 psi @ 70 Degrees F (27)

250 PSI @ 100 Degrees F (1)

250 psi @ 150 Degrees F (14)

275 psi @ 100 Degrees F (2)

285 psi @ 100 Degrees F (4)

285 psi @ 600 Degrees F (1)

300 psi @ 150 Degrees F (41)

600 psi @ 150 Degrees F (10)

740 psi @ 600 Degrees F (1)

1,480 psi @ 600 Degrees F (2)

2,000 psi @ 100 Degrees F (8)

2,000 psi @ 250 Degrees F (1)

3000 psi @ 225 Degrees F (1)

Not Rated (4)
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Max. Steam Pressure - Valves

125 psi 125 psi (6)
150 psi 150 psi (6)
15 psi WSP 15 psi WSP (14)
80 psi WSP 80 psi WSP (6)
120 psi WSP 120 psi WSP (6)
125 psi WSP 125 psi WSP (81)
130 psi WSP (1)

150 psi WSP (43)

200 psi WSP (34)

285 psi WSP (1)

300 PSI WSP (1)

300 psi WSP (9)

400 psi WSP (1)

740 psi WSP (1)

800 psi WSP (8)

1,480 psi WSP (2)

Not Rated (367)
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Flow - Valves

0.8 gpm 0.8 gpm (1)
0.85 gpm 0.85 gpm (1)
1.21 gpm 1.21 gpm (2)
1.35 gpm 1.35 gpm (1)
1.4 gpm 1.4 gpm (4)
2.0 gpm 2.0 gpm (3)
2.5 gpm (2)

3.3 gpm (6)

3.5 gpm (1)

3.53 gpm (2)

4.0 gpm (8)

4.1 gpm (2)

4.28 gpm (3)

4.46 gpm (2)

5 gpm (2)

5.1 gpm (3)

5.2 gpm (1)

5.9 gpm (1)

6 gpm (1)

6.0 gpm (13)

6.6 gpm (1)

6.7 gpm (2)

6.9 gpm (1)

7.0 gpm (2)

7.6 gpm (2)

9 gpm (1)

9.00 gpm (1)

9.20 gpm (1)

9.36 gpm (1)

9.94 gpm (2)

10 gpm (2)

10.0 gpm (26)

10.5 gpm (1)

12.0 gpm (2)

12.47 gpm (1)

13.0 gpm (4)

13.6 gpm (1)

15.0 gpm (2)

15.95 gpm (1)

16 gpm (1)

16.0 gpm (2)

16.3 gpm (1)

18 gpm (2)

18.0 gpm (21)

18.8 gpm (1)

19 gpm (2)

20.0 gpm (5)

20.2 gpm (1)

21.0 gpm (1)

22 gpm (1)

22.0 gpm (1)

23.0 gpm (6)

23.5 gpm (1)

24.0 gpm (2)

25.0 gpm (3)

26.0 gpm (1)

28 gpm (1)

28.6 gpm (1)

30.0 gpm (8)

31.0 gpm (20)

35.2 gpm (1)

35.72 gpm (2)

38.0 gpm (1)

39.0 gpm (1)

40.0 gpm (4)

44.0 gpm (1)

45.0 gpm (1)

46.0 gpm (4)

47.59 gpm (2)

48 gpm (2)

49.0 gpm (1)

50.0 gpm (1)

54.0 gpm (12)

56.0 gpm (1)

56.41 gpm (2)

60.0 gpm (2)

65 gpm (2)

65.0 gpm (2)

70.0 gpm (4)

72.0 gpm (2)

76.0 gpm (15)

78.44 gpm (1)

81 gpm (1)

81.0 gpm (1)

91.79 gpm (1)

100 gpm (3)

120 gpm (5)

130 gpm (2)

131 gpm (11)

137 gpm (2)

140 gpm (1)

144 gpm (2)

150 gpm (6)

152 gpm (1)

170 gpm (4)

192 gpm (3)

224 gpm (1)

225 gpm (2)

275 gpm (3)

290 gpm (2)

297 gpm (3)

300 gpm (1)

315 gpm (2)

327 gpm (2)

400 gpm (6)

500 gpm (4)

605 gpm (2)

700 gpm (5)

720 gpm (2)

920 gpm (2)

1,000 gpm (6)

1,440 gpm (2)

1,800 gpm (1)

3,500 gpm (3)

6,000 gpm (1)
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Full Flow - Valves

No No (86)
Yes Yes (367)

Max. Temp. - Valves

100 Degrees F 100 Degrees F (5)
100 Degrees F 100 Degrees F (3)
110 Degrees F 110 Degrees F (1)
120 Degrees F 120 Degrees F (14)
120 Degrees F 120 Degrees F (7)
130 Degrees F 130 Degrees F (11)
130 Degrees F (3)

140 Degrees F (99)

150 Degrees F (15)

150 Degrees F (5)

158 Degrees F (10)

160 Degrees F (3)

180 Degrees F (130)

180 Degrees F (13)

190 Degrees F (14)

190 Degrees F (3)

194 Degrees F (3)

200 Degrees F (23)

200 Degrees F (1)

210 Degrees F (10)

210 Degrees F (5)

212 Degrees F (6)

250 Degrees F (16)

250 Degrees F (1)

280 Degrees F (2)

300 Degrees F (17)

300 Degrees F (6)

302 Degrees F (5)

350 Degrees F (16)

352 Degrees F (10)

352 Degrees F (1)

353 Degrees F (14)

356 Degrees F (3)

356 Degrees F (1)

406 Degrees F (45)

406 Degrees F (6)

425 Degrees F (24)

425 Degrees F (2)

550 Degrees F (10)

600 Degrees F (4)

800 Degrees F (8)

1,000 Degrees F (4)
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Mounting Orientation

Horizontal Horizontal (78)
Horizontal, Vertical Horizontal, Vertical (424)
Vertical Vertical (47)

Check Valves

Check valves allow single-direction flow of liquids or gases. Also called one-way or non-return valves, they prevent backflow of downstream media into pumps, residential plumbing systems, and industrial process applications.

https://catalogue.grainger.ca/?hybris=true

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