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Rotary Valves
Discharge and Shut-Off Devices
Rotary valves are used to discharge dust, shavings, granulated material and fibrous materials, and as shut-off devices. To provide for technical decoupling in an explosive environment, the valves can be engineered and delivered as type-certified protection systems (ignition- and flame-proof).
 | Type zsg:br>For free-flowing dust types with predominantly hard and fine particles |
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Execution:
Cast iron housing, optional hard-chrome plated bore holes, cast iron full blade rotor (standard) with available wear-resistant steel option.
Throughput rate: 7.5 to 15 m3/h |
 | Type zsl:
For free-flowing dust types, large-volume shavings, lightweight fibers |
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Execution:
Housing features screw-based construction, rotor blades with elastic sealing lips.
Throughput rate: 35 to 8,650 m3/h |
 | Type zss:
For free-flowing dust types with predominantly hard and fine particles and for non-metallic shavings |
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Execution:
Welded massive steel housing, in part with control openings in the valve inlet; housing boreholes mechanically processed and hard-chromed; wear-resistant rotor with adjustable guides as standard equipment.
Throughput rate: 25 to 830 m3/h |
 | Type zsm:
For free-flowing dust types and large-volume wood shavings. |
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Execution:
Welded massive steel housing; shearing blade in valve inlet and outlet; V-rotor of wear-resistant steel with hardened cutting edges
Throughput rate: 120 to 1,360 m3/h |
Butterfly Valves and (Double-) Pendulum Flaps
In butterfly valves and pendulum flaps, the discharge of material takes place as the result of periodically opening and closing the valve flap. The flap is activated by weight, electricity or compressed air.
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