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Knife gate valve
pneumatically-operatedisolationfire protection

knife gate valve
knife gate valve
knife gate valve
knife gate valve
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Characteristics

Type
knife gate
Operation
pneumatically-operated
Function
isolation
Associated function
fire protection
Other characteristics
standard
Temperature

Min.: 0 °C (32 °F)

Max.: 538 °C (538 °F)

DN

Min.: 300 mm (11.811 in)

Max.: 950 mm (37.402 in)

Description

Burner Line Knife Gate Valves Material Isolation Valves Stock® has developed a Knife Gate Burner Line valve in accordance with the National Fire Protection Association (NFPA) standard 85. The standard requires burner line isolation at the pulverizer and at the burners to provide safety during the operation and maintenance of pulverized fuel firing systems. Stock® Knife Gate Valves (KGV) are specially constructed valves designed for extreme service. This ability to isolate portions of the burner line allows routine maintenance to be performed safely. These valves are also used for the isolation of material feed downspouts located between the pulverizer and feeder, allowing safe access and maintenance of the feeders without exposure to dangerous hot gas. Stock® Knife Gate Valves are designed for adverse conditions. They are made to handle high velocity mixture of air and pulverized coal. Stock® KGVs meet the individual requirements necessary to provide containment of explosion pressures as required by the NFPA standard. Stock® KGVs feature a low profile that adapts to new installations or retrofits. Internal bore surfaces include a tungsten carbide surface treatment for long life. When retracted, no portion of the gate remains in the pipe, so the flowing material does not wear the gate edge. Because of the tight seal provided by the gate seating cams, there is minimal leakage of gas.

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.