Geko Union/ Geko Fluid Control GmbH

Under Silo Special Knife Gate Valves

This knife gate valve is mainly used in the mining and food-processing industries. It is specially manufactured for an under silo assembly. Owing to blowing holes, it can remove dry products such as dust or grains, avoid the stuffing and the accumulating to jam the gate.

General Characteristics of Under Silo Special Knife Gate Valves


    Cast iron, stainless steel, aluminium or aluminium hard anodised ( resisting to abrasion avoids forming of alumina in surface).


    Pressures: to consult us


    Nitrile: 80℃

    EPDM: 110℃


    Manufacture according to the requirements of the European directive 97/23/CE 《Equipments under pressure》: category III modulate H(from DN 50 to DN 600).

    Test procedures are established according to NF EN 12266-1NFEN12266-2,DN3230and ISO5208.


    Between flanges PN 10 following NFE 29203-BS450-ANSI B 16-5-option ASA 150.

Features of Under Silo Special Knife Gate Valves

Steel reinforced: no retention zone

Wide body: ease of product evacuation

Sharp gate with chamfer: straight cut

Gate guidage by PTFE rubbing plate: low friction

Scraper effect packing: ease of gate cleaning

Blowing holes: body cleaning simplified

Dismantling bottom

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