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.

Structure showing as follows:

1 Valve disc 2 Valve seat 3 Valve body 4 Valve stem 5 Yoke 6 Operation device

Design standard

this electirc piston valve is designed and selected to fullly prior or meet the needs of customers requirements according to international industrial standard and design standard.

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