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 Home / Valve Products / Check Valves

Check Valves

Check valves are mechanical valves that permit gases and liquids to flow in only one direction, preventing process flow from reversing. They are classified as one-way directional valves. Fluid flow in the desired direction opens the valve, while backflow forces the valve closed. The mechanics of check valve operation are not complicated.

Ball Check Valves

Ball check valves contain a ball that sits freely above the seat, which has only one through hole. The ball has a slightly larger diameter than that of the through hole. When the pressure behind the seat exceeds that above the ball, liquid is allowed to flow through the valve. But once the pressure above the ball exceeds the pressure below the seat, the ball returns to rest in the seat, forming a seal that prevents backflow.

Flomatic Corporation manufactures:

Ball Check Valves

Ball Check Valves 508
Ball Check Valves
Size(s): 1 to 4 in. (25 to 100 mm)
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Ball Check Valves 408
Ball Check Valves
Size(s): 3 to 14 in. (80 to 350 mm)
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Ball Check Valves 4082
Ball Check Valves
Size(s): 3 to 6 in. (80 to 150 mm)
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408PRX & 4082PRX
Ball Check Valves
Size(s): 3 to 6 in. (80 to 150 mm)
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Ball Check Valves 208
Ball Check Valves
Size(s): 1 1/4 to 2 in. (32 to 50 mm)
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Ball Check Valves 208T
Ball Check Valves
Size(s): 1 1/4 to 3 in. (32 to 80 mm)
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Ball Check Valves 208B
Ball Check Valves
Size(s): 1 1/4 to 2 in. (32 to 50 mm)
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77 Auto-Vac Vacuum Breaker
Ball Check Valves
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Double Check Valves

Double Check Valves DCVE
Double Check Valve Assembly
Size(s): 3/4 to 2 in. (20 to 50 mm)
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Globe Style Silent Check Valves 

Globe Style Silent Check Valves 402BT
Check Valves
Size(s): 2 to 24 in. (50 to 600 mm)
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Globe Style Silent Check Valves 402BTR
Check Valves
Size(s): 2 to 24 in. (50 to 600 mm)
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silent check valves 402BT2/402BTR2
Silent Check Valves
Size(s): 2 to 16 in.
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silent check valves 402S6
Silent Check Valves
Size(s): 8 to 18 in. (200 to 450 mm)
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silent check valves 402S6T
Silent Check Valves
Size(s): 8 to 18 in. (200 to 450 mm)
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Hydraulic Check Valves 

Hydraulic Check Valves C1001
Control Valves
Size(s): 1 1/2 to 12 in. (40 to 300 mm)
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Hydraulic Check Valves CF1001
Control Valves
Size(s): 1 1/2 to 12 in. (40 to 300 mm)
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Submersible Check Valves 
80E Series

Submersible Check Valves 80E
Enviro-Check® Valves
Size(s): 1/4 to 4 in. (8 to 100 mm)
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Submersible Check Valves 80AE
Enviro-Check® Valves
Size(s): 3/4 to 4 in. (20 to 100 mm)
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Submersible Check Valves 80BE
Enviro-Check® Valves
Size(s): 3/4 to 4 in. (20 to 100 mm)
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Submersible Check Valves 80CE
Enviro-Check® Valves
Size(s): 1 to 4 in. (25 to 100 mm)
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Submersible Check Valves 80HTE
Enviro-Check® Valves
Size(s): 1/4 to 4 in. (8 to 100 mm)
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Submersible Check Valves 80ME
Enviro-Check® Valves
Size(s): 1 to 3 in. (25 to 80 mm)
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Submersible Check Valves 80XBE
Enviro-Check® Valves
Size(s): 1 to 2 in. (25 to 50 mm)
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100E Series

Submersible Check Valves 100E
Enviro-Check® Valves
Size(s): 3/4 to 1 1/4 in. (20 to 32 mm)
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Submersible Check Valves 100DPE
Enviro-Check® Valves
Size(s): 1 x 1 1/4 in. (25 x 32 mm)
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Submersible Check Valves 100ME
Enviro-Check® Valves
Size(s): 1 to 1 1/2 in. (25 to 40 mm)
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Submersible Check Valves 100XLE
Enviro-Check® Valves
Size(s): 1 to 1 1/4 in. (25 to 32mm)
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Ductile Iron Check Valves 
80DI Series

Ductile Iron Check Valves 80DI
Ductile Iron Check Valves
Size(s): 1 to 8 in. (25 to 200 mm)
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cast iron check valves 80DIVFD
Ductile Iron Check Valves
Size(s): 1 to 8 in. (25 to 200 mm)
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Ductile Iron Check Valves 80DIA
Ductile Iron Check Valves
Size(s): 1 to 4 in. (25 to 100 mm)
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Ductile Iron Check Valves 80DIB
Ductile Iron Check Valves
Size(s): 1 to 4 in. (25 to 100 mm)
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Ductile Iron Check Valves 80DICL
Ductile Iron Check Valves
Size(s): 2 to 6 in. (50 to 150 mm)
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Ductile Iron Check Valves 80DITurbo
Ductile Iron Check Valves
Size(s): 6 to 10 in. (150 to 250 mm)
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Ductile Iron Check Valves 80DIX
Ductile Iron Check Valves
Size(s): 3 to 12 in. (80 to 300 mm)
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cast iron check valves 80DI8R
Ductile Iron Check Valves
Size(s): 3 to 8 in. (80 to 200 mm)
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Ductile Iron Check Valves 80MDI
Ductile Iron Check Valves
Size(s): 2 to 6 in. (50 to 150 mm)
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cast iron check valves 80MDI-VFD
Ductile Iron Check Valves
Size(s): 2 to 6 in. (50 to 150 mm)
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Ductile Iron Check Valves 100MDI
Ductile Iron Check Valves
Size(s): 1 to 1 1/4 in. (25 to 32 mm)
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Ductile Iron Check Valves 82
Ductile Iron Check Valves
Size(s): 3 to 6 in. (80 to 150 mm)
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Ductile Iron Check Valves 82DP
Ductile Iron Check Valves
Size(s): 2 1/2 to 6 in. (65 to 150 mm)
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Swing Check Valves

Swing Check Valves 78A
Swing Check Valves
Size(s): 3 to 14 in. (80 to 350 mm)
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Swing Check Valves 78
Swing Check Valves
Size(s): 2 1/2 to 14 in. (65 to 350 mm)
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Swing Check Valves 90/92
Swing Check Valves
Size(s): 2 to30 in. (50 to 750 mm)
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Swing Check Valves 90/92LS
Swing Check Valves
Size(s): 2 to30 in. (50 to 750 mm)
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Swing Check Valves 90/92LW
Swing Check Valves
Size(s): 2 to30 in. (50 to 750 mm)
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Swing Check Valves 90/92CS
Swing Check Valves
Size(s): 2 to30 in. (50 to 750 mm)
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Swing Check Valves 93LW
Swing Check Valves
Size(s): 2 to 12 in. (50 to 300 mm)
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Swing Check Valves 745
Swing Check Valves
Size(s): 2 to 24 in. (50 to 600 mm)
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Swing Check Valves 745BF
Swing Check Valves
Size(s): 2 to 24 in. (50 to 600 mm)
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Swing Check Valves 745PI
Swing Check Valves
Size(s): 2 to 24 in. (50 to 600 mm)
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Swing Check Valves 745BFPI
Swing Check Valves
Size(s): 2 to 24 in. (50 to 600 mm)
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Swing Check Valves 745LS
Swing Check Valves
Size(s): 2 to 24 in. (50 to 600 mm)
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Wafer Check Valves

Wafer Check Valves 848/895
Check Valves
Size(s): 2 to 24 in. (50 to 600 mm)
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Wafer Check Valves 888/888R
Check Valves
Size(s): 2 to 10 in. (50 to 250 mm)
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Wafer Check Valves 812X
Stainless Steel Check Valves
Size(s): 1/2 to 8 in. (15 to 200 mm)
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Wafer Check Valve 888S6/888S6R
Stainless Steel Check Valves
Size(s): 2 to 8 in. (50 to 200 mm)
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Stainless Steel Check Valves

Stainless Steel Check Valves 812X
Stainless Steel Check Valves
Size(s): 1/2 to 8 in. (15 to 200 mm)
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Stainless Steel Check Valves 812XT
Stainless Steel Check Valves
Size(s): 1/2 to 8 in. (15 to 200 mm)
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Stainless Steel Check Valves 80/100SS
Stainless Steel Check Valves
Size(s): 1 to 2 in. (25 to 50 mm)
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Stainless Steel Check Valves 80SSA
Stainless Steel Check Valves
Size(s): 1 to 2 in. (25 to 50 mm)
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Stainless Steel Check Valves 80SSB
Stainless Steel Check Valves
Size(s): 1 to 2 in. (25 to 50 mm)
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Stainless Steel Check Valves 80SSC
Stainless Steel Check Valves
Size(s): 1 to 1 1/4 in. (25 to 32 mm)
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Stainless Steel Check Valves 80SSXB
Stainless Steel Check Valves
Size(s): 1 to 1 1/4 in. (25 to 32 mm)
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Stainless Steel Check Valves 100XLSS
Stainless Steel Check Valves
Size(s): 1 to 1 1/4 in. (25 to 32 mm)
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Stainless Steel Check Valves 100MSS
Stainless Steel Check Valves
Size(s): 1/2 to 1 1/4 in. (15 to 32 mm)
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Stainless Steel Check Valves 816
Ward Check Valves
Size(s): 1/4 to 2 in. (8 to 50 mm)
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Stainless Steel Check Valves 816FL
Ward Check Valves
Size(s): 1 to 4 in. (25 to 100 mm)
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Stainless Steel Check Valves 816FC
Ward Check Valves
Size(s): 1/4 to 2 in. (8 to 50 mm)
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Stainless Steel Check Valves 816HS
Ward Check Valves
Size(s): 1/4 to 2 in. (8 to 50 mm)
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Stainless Steel Check Valves 80S6
Stainless Steel Check Valves
Size(s): 1 to 10 in. (25 to 250 mm)
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Stainless Steel Check Valves 80S6CL
Stainless Steel Check Valves
Size(s): 2 to 6 in. (50 to 150 mm)
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Stainless Steel Check Valves CV80SS
Stainless Steel Check Valves
Size(s): 3/8 to 1/2 in. (10 to 15 mm)
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silent check valves 402S6/402S6T
Silent Check Valves
Size(s): 8 to 18 in. (200 to 450 mm)
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Wafer Check Valve 888S6/888S6R
Stainless Steel Check Valves
Size(s): 2 to 8 in. (50 to 200 mm)
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Stainless Check Valve 80S6VFD
Stainless Steel Check Valves
Size(s): 2 to 8 in. (50 to 200 mm)
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Stainless Check Valve 80MS6VFD
Stainless Steel Check Valves
Size(s): 2 to 8 in. (50 to 200 mm)
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Plastic Check Valves

Plastic Check Valves 100MP
Plastic Check Valves
Size(s): 1 to 1 1/4" in. (25 to 32 mm)
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Plastic Check Valves 901
Plastic Check Valves
Size(s): 3/8 to 1" in. (10 to 25 mm)
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Plastic Check Valves 297D
Plastic Check Valves
Size(s): 3/8 to 1" in. (10 to 25 mm)
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Plastic Check Valves 290P
Plastic Check Valves
Size(s): 3/8 to 1" in. (10 to 25 mm)
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Auto Drain Check Valves

 Auto Drain Check Valves Model 70 View Details
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