this discharging valve is specially  developed according to the working conditions of coal slurry tank, Coal pulverizing mills discharge tanks.It is mainly used for the bottom discharge of reactor, storage tank and other containers,the downward flange is welede to the bottom of the tank and other containers. Therefore the phenomenon of the processing medium is often residual at the container bottom is aovided. The inner cavity of the valve body is coated with WC, during the moment of the valve opening,t he valve body can be protected from washing,corrosion. both sealing surface of the valve disc and valve seat is conated wtih hard alloy,and the surface in contact with the medium is coated with WC to guarantee the HRC ≥60. The valve has advantages of high wear-resistance and corrosion resistant. The valve is designed with linear sealing, the sealing furface is guaranteed, and the medium scaling is avoided. We can select different operating actuator according to customer's reqwuirement, such as manual,pneumatic (spring return,Double acting,Optional handwheel), electric, hydraulic and gearing operation.



FEatures
1.Special cleaning device is offered for the valve body of the flange connection valve,which can be used to clean the inside of the product periodically. so caking and blocking of the coal slurry can be avoided.
2.Made of corrosion-resistant material,the inner cavity of the valve body is painted.
3.the sealing surface made of bead weld cemented carbide makes for the longer service of the special dump valve for coal slurry.
4.the anti-rotation mechanism of the dump valve for coal slurry can guarantee the rectilinear motion of the valve stem.
Technical Parameters
Size: 2" ~8" DN50~DN200
Pressure: Class 150~Class 300  PN1.0~PN16
Body Material: WCB(A105), CF8(304), CF8M(316), CF3(304L), CF3M(316L) etc.
Connection Type: Flange
Driving Type: Manual,bevel gear
Application
Coal chemical industry.

Applicable standard

Valve design,manufacture, inspection and test standard is according but not limited to the following standards

SH/T3406-2013	Steel pipe flanges
ASME B16.10	Valve face to face and end to end dimensions
ASME B16.21	Non - metallic flat gaskets for pipe flanges
ASME B16.25	Buttwelding Ends
ASME B16.34	Flanged valves, threaded valves, and welded valves
API598	Valve test and inspection
GB/T12221	Length of metal valve
GB/T12224-2005	General requirements for steel valves
GB/T12225—12230	General valve    material technical requirements
JB/T9092	Valve test and inspection
GB/T13927	Valve pressure test for general valves
JB/T106-2004	Markings and coatings of valves
GB3836.1-2000	Electrical equipment for explosive gas atmospheres - part first: General requirements
GB3836.2-2000	Electrical equipment for explosive gas atmospheres - Part second: flameproof type
GB/T 24922-2010	Technical specification for flameproof valve electric device
JB/T8530-1997	Method for preparing valve electric device type
JB/T8219-1999	Electrical actuators for industrial process measurement and control systems