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

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

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

	402BT Check Valves Size(s): 2 to 24 in. (50 to 600 mm)	View Details Submit RFQ
	402BTR Check Valves Size(s): 2 to 24 in. (50 to 600 mm)	View Details Submit RFQ
	402S6 Silent Check Valves Size(s): 8 to 18 in. (200 to 450 mm)	View Details Submit RFQ
	402S6T Silent Check Valves Size(s): 8 to 18 in. (200 to 450 mm)	View Details Submit RFQ

Hydraulic Check Valves

	C1001 Control Valves Size(s): 1 1/2 to 12 in. (40 to 300 mm)	View Details Submit RFQ
	CF1001 Control Valves Size(s): 1 1/2 to 12 in. (40 to 300 mm)	View Details Submit RFQ

Submersible Check Valves
80E Series

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

100E Series

	100E Enviro-Check® Valves Size(s): 3/4 to 1 1/4 in. (20 to 32 mm)	View Details Submit RFQ
	100DPE Enviro-Check® Valves Size(s): 1 x 1 1/4 in. (25 x 32 mm)	View Details Submit RFQ
	100ME Enviro-Check® Valves Size(s): 1 to 1 1/2 in. (25 to 40 mm)	View Details Submit RFQ
	100XLE Enviro-Check® Valves Size(s): 1 to 1 1/4 in. (25 to 32mm)	View Details Submit RFQ

Ductile Iron Check Valves
80DI Series

	80DI Ductile Iron Check Valves Size(s): 1 to 8 in. (25 to 200 mm)	View Details Submit RFQ
	80DIVFD Ductile Iron Check Valves Size(s): 1 to 8 in. (25 to 200 mm)	View Details Submit RFQ
	80DIA Ductile Iron Check Valves Size(s): 1 to 4 in. (25 to 100 mm)	View Details Submit RFQ
	80DIB Ductile Iron Check Valves Size(s): 1 to 4 in. (25 to 100 mm)	View Details Submit RFQ
	80DICL Ductile Iron Check Valves Size(s): 2 to 6 in. (50 to 150 mm)	View Details Submit RFQ
	80DITurbo Ductile Iron Check Valves Size(s): 6 to 10 in. (150 to 250 mm)	View Details Submit RFQ
	80DIX Ductile Iron Check Valves Size(s): 3 to 12 in. (80 to 300 mm)	View Details Submit RFQ
	80DI8R Ductile Iron Check Valves Size(s): 3 to 8 in. (80 to 200 mm)	View Details Submit RFQ
	80MDI Ductile Iron Check Valves Size(s): 2 to 6 in. (50 to 150 mm)	View Details Submit RFQ
	100MDI Ductile Iron Check Valves Size(s): 1 to 1 1/4 in. (25 to 32 mm)	View Details Submit RFQ
	82 Ductile Iron Check Valves Size(s): 3 to 6 in. (80 to 150 mm)	View Details Submit RFQ
	82DP Ductile Iron Check Valves Size(s): 2 1/2 to 6 in. (65 to 150 mm)	View Details Submit RFQ

Swing Check Valves

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

Wafer Check Valves

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

Stainless Steel Check Valves

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

Plastic Check Valves

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

Auto Drain Check Valves

Model 70

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1-800-833-2040

Valve Products

Check Valves

Ball Check Valves