SLIDING SHUTTER Russian patent published in 2008 - IPC F16K3/02 F16K3/316 

FIELD: construction, conduit.

SUBSTANCE: invention pertains to pipe fitting and is intended for usage in pipelines transporting viscous working media. Sliding shutter contains a body frame with a passing channel for the working medium and under shutter space, lift gate with a through opening and front sealing faces, packing saddles, elastic packing rings and guides for the gate. Guiding plates are made integral with the packing saddles and are equipped with sealing faces for the gate. Elastic packing rings are placed on the gate. Additional packing rings are arranged on the periphery of the front sealing faces of the gate. The latter ones isolate from the flow part of the body frame under gate space along the entire length of the gate. Invention increases maintainability and ecological safety of the sliding shutter.

EFFECT: enhanced maintainability and ecological safety of the sliding shutter.

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