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Bio: WCB JIS 10K Gear bolted bonnet knife gate valve
The knife gate valve is a uni-directional wafer valve for general industrial application.
The nominal diameter available range from DN50 to DN800 with flange connections complying with EN 1092-1
PN10/PN16 or alternatively, ANSI B16.5.
The knife gate valve is predominantly used in the paper and pulp, chemical, and mining industries, andthe food
industry as well as sewage treatment plants, and in the sugar, steel and animal feed sectors.
Drive actuators offered for the knife gate valve include handwheel with rising or non-rising stem, or al
ternatively double-or single-acting pneumatic cylinders (spring return), Bevel Gear, chain gear and electric actuators.
The structure of the uni-directional knife gate valves is a wafer style cast monoblock body, with raised face
and reinforced ribs for larger nominal diameters for extra body strength.
The monoblock body of the knife gate valves is available WCB or in stainless steel CF8M/CF8/CF3/CF3M.
The slide plate of the knife gate valves is using stainless steel AISI 304,201,301,304L, 316L or AISI 316 or else.
The plate radius of the knife gate valves slide gate has a bevelled cutting edge. As a result, solids can be cut through,
achieving a tight seal in the closed position. On request, the thickness of the knife gate valves plate can be increased
for higher operating pressures and/or higher quality material can be used.
The standard material used for the knife gate valves elastomer seal is EPDM/ NBR or Metal seat Alternatively, nitrile,
viton, PTFE or else are available.
The gland packing consists of several layers of braided fibre.
An EPDM o-ring is additionally integrated into the layers of the knife gate valves gland packing as standard if
request by customers

Testing includes a body shell test, a seat test and a cycling test to insure proper functioning of moving parts.
• Standard Shell test: Hydro test at 1.5 times the rated CWP (cold working pressure) – Zero allowable leakage
• Standard Resilient Seat test: Hydro test at 15 psi (1 bar) and rated CWP

Max. operating pressures for GAOCHUANG type DMZ73 Knife Gate Valves:
DN050-DN250: 10 bar
DN300-DN400: 6 bar
DN450: 5 bar
DN500-DN600: 4 bar
DN700-DN1800: 2 bar
GAOCHUANG is one of the largest wcb jis 10k gear bolted bonnet knife gate valve manufacturers and suppliers in China, offering the pricelist and quotation consultation service, as well as the customized service. Welcome to buy the quality and cheap products from our factory.China Bolted Bonnet Knife Gate Valve manufacturers
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