Typical Applications:
In many bulk material handling systems, such as coal fired power plant, steel plant, cereals transport system, cement transport systems, etc., generally in these applications, pneumatic conveying method is used to reduce manpower demand, and improve system efficiency and reliability. But abrasion of valves is a big problem that causes customers a lot trouble.
The valve sealing surface and flow path of these valves are destroyed seriously by high speed solid materials. FUVALVE develops Ceramic Double Disc Valves for these applications which works quite well for coal fired power plants all over the world.

Ceramic Double Disc Valves are suitable for any bulk materials handling system including the mediums listed as below: Silicon Powder,Alumina Powder,Coal Powder,Cement,Lime Stone Powder,Magnesium Powder,Quartz Sand,Metallurgical dust,Ores,Fly Ash,Granules.
ceramic_double_disc_valves_(3).jpg

Specification:

Type
Ceramic Double Disc Valves
Size
DN25-DN400(1”-16”)
Pressure Rating
PN10,PN16,PN25,PN40, CL150, CL300
Body Material
WCB, CF8
Trim Material
WCB+Al2O3 Ceramics, WCB+ZrO2 Ceramics, WCB+Solid Tungsten Carbide,WCB+Stellite
End Connection
Flanged type, Wafer Type, EN1092-1, DIN 2501, ASME B16.5

Features:
Product type
The Ceramic Double Disc Gate Valve is ceramics-to-ceramics sealing, also named as parallel double disc valve, or ceramic double disc valve or ceramic double gate valve.
The standard end connection of ceramic double disc valves is flanged type, but if the installation space is limited, wafer type is available.
Three piece bodies of Ceramic Double Disc Gate Valves are very easy for assemble and reliable for maintenance.
Self-cleaning disc design allows disc to move freely and avoid being scratched by solid particles.

Temperature range
Usually working temperature of pneumatic conveying system is not so high, but under some conditions like economizer valves in coal fired power plant, the working temperature may be up to 450 ℃. Then special design of ceramics and packing material will be considered.
Detailed information about working temperature of our Ceramic Double Disc Valves, please contact us at sales@ceramic-valves.com.
Normal working temperature of Ceramic Double Disc Valves: -29 °C ~ +200 °C
High temperature design of Ceramic Double Disc Gate Valves: -29 °C ~ +450 °C

Valve tightness
The tightness of valve is very important. FUVALVE has advanced ceramic processing technology and skilled technicians. All ceramic sealing faces of the Ceramic Double Disc Gate Valves are well ground and polished, which ensure Class V leakage as per FCI 70-2.
Other tightness rates upon request.
FUVALVE Ceramic Double Disc Gate Valves have much longer service life than the other similar products.

Design standards
Valve body ASME B16.34
Face-to-Face: Manufacturer’s Standard, customized length of Ceramic Double Disc Valves is available.
Valve Testing: API 598

The structure of FUVALVE Ceramic Double Disc Gate Valve is as the following exploded drawing.
ceramic_gate_valve_double_2_drawing.jpg
ceramic_double_disc_valves.jpg

No.
Part Name
Material
1
Pneumatic Cylinder
Aluminum
Aluminum
2a
Bolt
AISI 1045
F304
2b
Nut
A194 2H
A194 8
3
Packing Gland
WCB
CF8
4
Packing
Graphite
Graphite
5
Body
WCB
CF8
6
Disc Driver
WCB
CF8
7
Spring
60Si2Mn
17-7PH
8
Disc Adjusting Block
AISI 1045
F304
9
Disc
A105
F304
10
Disc Sealing Ring
Ceramics
Ceramics
11
Seat
Ceramics
Ceramics
12a
Body Bolt
A193 B7
A193 B8
12b
Body Nut
A194 2H
A194 8
13
Gland Bolt
A193 B7
A193 B8
13b
Gland Nut
A194 2H
A194 8