Check Valves Manufacturer

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

408PRX / 4082PRX
Ball Check Valves
Size(s): 3 to 14 in. (80 to 350 mm)
208B
Ball Check Valves
Size(s): 1 1/4 to 2 in. (32 to 50 mm)
208T
Ball Check Valves
Size(s): 1 1/4 to 2 in. (32 to 50 mm)
208
Ball Check Valves
Size(s): 1 1/4 to 2 in. (32 to 50 mm)
4082
Ball Check Valves
Size(s): 3 & 4 in. (80 & 100 mm)
408
Ball Check Valves
Size(s): 3 to 14 in. (80 to 350 mm)
508
Ball Check Valves
Size(s): 1 to 4 in. (25 to 100 mm)

Globe Style Silent Check Valves

402BT2/402BTR2
Check Valves
Size(s): 2 to 16 in.
402S6/402S6T
Check Valves
Size(s): 2 to 18 in. (150 to 450 mm)
402BT/402BTR
Check Valves
Size(s): 2 to 24 in. (50 to 600 mm)

Hydraulic Check Valves

C1001 / CF1001
Control Valves
Size(s): 1 1/4 to 36 in. (40 to 900 mm)

Unleaded Bronze Check Valves

100XLE
Enviro Check® Valves
Size(s): 1 to 1-1/4 in. (25 to 32mm)
100ME
Enviro Check® Valves
Size(s): 1 to 1 1/2 in. (25 to 40 mm)
100DPE
Enviro Check® Valves
Size(s): 1 X 1 1/4 in. (25 x 32 mm)
100E
Enviro Check® Valves
Size(s): 3/4 to 1 1/4 in. (20 to 32 mm)
80XBE
Enviro Check® Valves
Size(s): 1 to 2 in. (25 to 50 mm)
80ME
Enviro Check® Valves
Size(s): 1 to 2 in. (25 to 50 mm)
80HTE
Enviro Check® Valves
Size(s): 1/4 to 4 in. (8 to 100 mm)
80CE
Enviro Check® Valves
Size(s): 1 to 2 in. (25 to 100 mm)
80BE
Enviro Check® Valves
Size(s): 3/4 to 4 in. (20 to 100 mm)
80AE
Enviro Check® Valves
Size(s): 3/4 to 4 in. (20 to 100 mm)
80E
Enviro Check® - Certified Lead Free*
Size(s): 1/4 to 4 in. (8 to 100 mm)
80EVFD / 100EVFD
VFD - Certified Lead Free*
Size(s): 1 to 4 in. (25 to 100 mm)

Ductile Iron Check Valves

80DI8R-VFD
Ductile Iron Check Valves
Size(s): 3 to 8 in. (80 to 200 mm) 8 round threads (short) are NOT API certified.
80MDI-VFD
Ductile Iron Check Valves
Size(s): 2 to 6 in. (50 to 150 mm)
82DP
Ductile Iron Check Valves
Size(s): 2 1/2 to 6 in. (65 to 150 mm)
82DI-VFD
Ductile Iron Check Valves
Size(s): 3 to 8 in. (80 to 200 mm)
100MDI
Ductile Iron Check Valves
Size(s): 1 to 1 1/4 in. (25 to 32 mm)
80MDI
Ductile Iron Check Valves
Size(s): 3 to 5 in. (75 to 125 mm)
80DIVFD
Ductile Iron Check Valves - For use with Variable Flow Rate (VFD controlled pumps)
Size(s): 1 to 8 in. (25 to 200 mm)
80DI8R
Ductile Iron Check Valves
Size(s): 3 to 8 in. (80 to 200 mm) 8 round threads (short) are NOT API certified.
80DIX
Ductile Iron Check Valves
Size(s): 3 to 12 in. (80 to 300 mm)
80DI Turbo
Ductile Iron Check Valves
Size(s): 6 & 10 in. (150 to 250 mm)
80DICL
Ductile Iron Check Valves
Size(s): 2 to 6 in. (50 to 150 mm)
80DIB
Ductile Iron Check Valves
Size(s): 1 to 4 in. (25 to 100 mm)
80DIA
Ductile Iron Check Valves
Size(s): 1 to 4 in. (25 to 100 mm)
80DI
Ductile Iron Check Valves
Size(s): 1 to 8 in. (25 to 200 mm)
80MDW-VFD
Ductile Iron Check Valves
Size(s): 2 3/8

Swing Check Valves

745LS (745 WITH LIMIT SWITCH (SPDT))
Swing Check Valves
Size(s): 2 to 24 in. (50 to 600 mm)
93LW
Swing Check Valves
Size(s): 2 to 12 in. (50 to 300 mm)
745BFPI (745 with Position Indicator & Backflush Device)
Swing Check Valves
Size(s): 2 to 24 in. (50 to 600 mm)
745PI (745 with Position Indicator)
Swing Check Valves
Size(s): 2 to 24 in. (50 to 600 mm)
745BF (745 with Back Flush)
Swing Check Valves
Size(s): 2 to 24 in. (50 to 600 mm)
745
Swing Check Valves
Size(s): 2 to 24 in. (50 to 600 mm)
90CS/92CS
Swing Check Valves
Size(s): 2 to 30 in. (50 to 750 mm)
90LW/92LW
Swing Check Valves
Size(s): 2 to 30 in. (50 to 750 mm)
90LS/92LS
Swing Check Valves
Size(s): 2 to 30 in. (50 to 750 mm)
90/92
Swing Check Valves
Size(s): 2 to30 in. (50 to 750 mm)
78
Swing Check Valves
Size(s): 2 1/2 to 14 in. (65 to 350 mm)
78A
Swing Check Valves
Size(s): 3 to 14 in. (80 to 350 mm)

Wafer Check Valves

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

Stainless Steel Check Valves

816FL
Ward Check Valves
Size(s): 1 to 2 in. (25 to 100 mm)
402S6/402S6T
Check Valves
Size(s): 2 to 18 in. (150 to 450 mm)
812XT
Wafer Check Valves
Size(s): 1/2 to 8 in. (15 to 200 mm)
80/100SS
Stainless Steel Check Valves
Size(s): 1 to 2 in. (25 to 50 mm)
80SSA
Stainless Steel Check Valves
Size(s): 1 to 2 in. (25 to 50 mm)
80SSB
Stainless Steel Check Valves
Size(s): 1 to 2 in. (25 to 50 mm)
80SSC
Stainless Steel Check Valves
Size(s): 1 to 1 1/4 in. (25 to 32 mm)
80SSXB
Stainless Steel Check Valves
Size(s): 1 to 1 1/4 in. (25 to 32 mm)
100MSS
Stainless Steel Check Valves
Size(s): 1/2 to 1 1/4 in. (15 to 32 mm)
816
Ward Check Valves
Size(s): 1/4 to 2 in. (8 to 50 mm)
82S6VFD
Stainless Steel Check Valves
Size(s): 3
816FC
Ward Check Valves
Size(s): 1/4 to 2 in. (8 to 50 mm)
816HS
Ward Check Valves
Size(s): 1 in. (8 to 50 mm)
80S6
Stainless Steel Check Valves
Size(s): 1 to 10 in. (25 to 250 mm)
80S6CL
Stainless Steel Check Valves
Size(s): 2 to 8 in. (50 to 200 mm)
80S6VFD
Stainless Steel Check Valves - For use with Variable Flow Rate (VFD controlled pumps)
Size(s): 2 to 8 in. (50 to 200 mm)
80MS6VFD
Stainless Steel Check Valves - For use with Variable Flow Rate (VFD controlled pumps)
Size(s): 2 to 6 in.
80S6MCL
Stainless Steel Check Valves
Size(s): 2 to 8 in. (50 to 200 mm)
100XLSS
Stainless Steel Check Valves
Size(s): 1 to 1 1/4 in. (25 to 32 mm)
888S6/888S6R
Check Valves
Size(s): 2 to 8 in. (50 to 200 mm)
812X
Wafer Style Check Valves
Size(s): 1/2 to 8 in. (15 to 200 mm)
CV80SS
Control Valves
Size(s): 3/8 to 1/2 in. (10 to 15 mm)
80SL
Stainless Steel Check Valves
Size(s): 2

Plastic Check Valves

297D/290P
Plastic Check Valves
Size(s): 3/8 to 3/4" in. (10 to 20 mm)
901
Plastic Check Valves
Size(s): 3/8 to 1
100MP
Plastic Check Valves
Size(s): 1 to 1 1/4

Auto Drain Valve

70 Auto Drain
Auto Drain Valves
Size(s):

Ward Valves

Threaded Stainless Steel Strainers 16
Unleaded Strainer
Size(s): 1/4 to 2 in. (8 to 50 mm)
816HS
Ward Check Valves
Size(s): 1 in. (8 to 50 mm)
816FC
Ward Check Valves
Size(s): 1/4 to 2 in. (8 to 50 mm)
816FL
Ward Check Valves
Size(s): 1 to 2 in. (25 to 100 mm)
816
Ward Check Valves
Size(s): 1/4 to 2 in. (8 to 50 mm)
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.
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