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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.

Danfoss Flomatic manufactures:

• Ball Check Valves
• Double Check Valves
• Global Style Silent Check Valves
• Hydraulic Check Valves
• Submersible Check Valves
• Ductile Iron Check Valves
• Swing Check Valves
• Wafer Check Valves
• Stainless Steel Check Valves
• Plastic Check Valves
• Auto Drain Check Valves

Ball Check Valves

	508 Ball Check Valves Size(s): 1 to 4 in. (25 to 100 mm)	View Details
	408 Ball Check Valves Size(s): 3 to 14 in. (80 to 350 mm)	View Details
	4082 Ball Check Valves Size(s): 3 to 6 in. (80 to 150 mm)	View Details
	208 Ball Check Valves Size(s): 1 1/4 to 2 in. (32 to 50 mm)	View Details
	208T Ball Check Valves Size(s): 1 1/4 to 3 in. (32 to 80 mm)	View Details
	208B Ball Check Valves Size(s): 1 1/4 to 2 in. (32 to 50 mm)	View Details

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
	402BTR Check Valves Size(s): 2 to 24 in. (50 to 600 mm)	View Details

Hydraulic Check Valves 

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

Submersible Check Valves 
80E Series

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

100E Series

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

Ductile Iron Check Valves 
80DI Series

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

Swing Check Valves

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

Wafer Check Valves

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

Stainless Steel Check Valves

	812X Stainless Steel Check Valves Size(s): 1/2 to 8 in. (15 to 200 mm)	View Details
	812XT Stainless Steel Check Valves Size(s): 1/2 to 8 in. (15 to 200 mm)	View Details
	80/100SS Stainless Steel Check Valves Size(s): 1 to 2 in. (25 to 50 mm)	View Details
	80SSA Stainless Steel Check Valves Size(s): 1 to 2 in. (25 to 50 mm)	View Details
	80SSB Stainless Steel Check Valves Size(s): 1 to 2 in. (25 to 50 mm)	View Details
	80SSC Stainless Steel Check Valves Size(s): 1 to 1 1/4 in. (25 to 32 mm)	View Details
	80SSXB Stainless Steel Check Valves Size(s): 1 to 1 1/4 in. (25 to 32 mm)	View Details
	100XLSS Stainless Steel Check Valves Size(s): 1 to 1 1/4 in. (25 to 32 mm)	View Details
	100MSS Stainless Steel Check Valves Size(s): 1/2 to 1 1/4 in. (15 to 32 mm)	View Details
	816 Ward Check Valves Size(s): 1/4 to 2 in. (8 to 50 mm)	View Details
	816F Ward Check Valves Size(s): 1 to 4 in. (25 to 100 mm)	View Details
	80S6 Stainless Steel Check Valves Size(s): 1 to 10 in. (25 to 250 mm)	View Details
	80S6CL Stainless Steel Check Valves Size(s): 2 to 6 in. (50 to 150 mm)	View Details

Plastic Check Valves

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

Auto Drain Check Valves

Model 70

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