Double Flap Valve

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Product Details:

Height 600 - 2000 Millimeter (mm)
Usage Industrial
Size 800 x 1250 mm
Structure Control
Type Double Flap Valve
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Double Flap Valve Price And Quantity

Minimum Order Quantity 10 Unit

Double Flap Valve Product Specifications

Height 600 - 2000 Millimeter (mm)
Structure Control
Type Double Flap Valve
Usage Industrial
Size 800 x 1250 mm

Double Flap Valve Trade Information

Supply Ability 4 Unit Per Year
Delivery Time 3-4 Months
Main Domestic Market All India

Product Description

Double Flap valves find their application as a substitute of Rotary Airlocks i.e. to allow flow of dust and maintain airlock across the valve. It is particularly suitable for handling highly abrasive and gritty materials along with high vacuum across the valve. Two small hoppers are mounted in-line and with some space between them in an air-tight casing. Two sets of flaps/ cones seat against the discharge openings of the hoppers. The flaps or cones are held on arms that are fulcrummed on two shafts. The shafts are provided with external counter weights to counter balance the weight of flap or cone, the connecting arms and also the material pressure on top. The counter weight is so selected that the flaps / cones close tightly against the seat rings fitted at the discharge end of the hoppers to avoid leakage. The flap/ cone mounting on the connecting arms self aligning type to make the sealing airtight. For cone dump valve, the seats are sometimes provided with additional rubber rings to ensure leakproofness. The drive mechanism of these valves comprises of a geared motor with cam or linkage that alternately turns the two shafts by some degree. This results in partial lowering of the flap pair or cone at two levels alternately. Thus, as the top flap/cone lowers, material above it drops to fill the intermediate chamber. Now the top flap/cone closes and after some pause the bottom flap/cone opens to allow the material to pass out of the valve. The above mechanism ensures that any one flap/cone remains closed at any point of time thereby ensuring airlock across the valve.

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