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Ceramic Double Disc Valves

Brand : FOYO

Product origin : XIAMEN

Delivery time : 40 DAYS

Supply capacity : 100 PCS

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



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. FOYO 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.

If your working service is not listed above and you are not sure if FOYO Ceramic Double Disc Valve is suitable for your systems or not, please feel free to contact FOYO’s experienced engineer for professional proposals.




Design Features:

Product type

The Ceramic Double Disc 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 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@foyovalve.com.

Normal working temperature of Ceramic Double Disc Valves: -29 °C ~ +200 °C

High temperature design of Ceramic Double Disc Valves: -29 °C ~ +450 °C


Valve tightness

The tightness of valve is very important. FOYO has advanced ceramic processing technology and skilled technicians. All ceramic sealing faces of the Ceramic Double Disc Valves are well ground and polished, which ensure Class V leakage as per FCI 70-2.

Other tightness rates upon request.

FOYO Ceramic Double Disc 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 FOYO Ceramic Double Disc Valve is as the following exploded drawing.


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


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