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PRODUCT DESCRIPTION£º
Pneumatic ceramic double-disc gate valve
PRODUCT DETAILS£º

Structural Features:

1. Use a cylinder as the actuator to drive the gate directly the gate directly to move up and down, with fast opening/closing.

2. The double gates adopt floating connection to produce reliable one-way seal under the medium pressure action. Also the floating connection can drive the gate to rotate up in opening/closing due to misalignment of axial lines so that the friction grains between the valves¡¯s  gate and seat are distributed evenly to produce no linear abrasion,  thus improving its service life greatly.

3. Sealing surfaces of the valve¡¯s body and gate are lined with anti-wear ceramics,with excellent resistance to abrasion.

4. Being ceramics, it¡¯s easy for transportation, installation and maintenance.

Working principle

When the cylinder drives the gate to move downwards through the valve¡¯s stem, sealing surfaces of the valve¡¯s gate and body will be engaged to cut off the channel, namely, closing; the other way around is opening.

Materials for main parts

Item

Name

Material

Item

Name

Material

1

Body

WCB

7

Middle body

WCB

2

Plate

Composite engineering ceramic

8

Packing

Flexible Graphite

3

Seat

Composite engineering ceramic

9

Packing gland

2Cr13

4

Stem

2Cr13

10

Bracket

Q235

5

Stud

35CrMoVA

11

Pneumatic device

 

6

Nut

25

 

 

 

Application specification

Design and manufacture

CB/T12224

Connection end dimension

Structural length

Manufacturer¡¯s standard

Flange dimension

JB/T 79.1

Inspection and test

GB/T 9092

Material

Carbon steel

GB/T 12229

Stainless steel

GB/T 12230

Mark

GB/T 12220

Supply

GB/T 12252

Installation, Use and Maintenance;

1. Before installation, it¡¯s necessary to clean the valve and remove possible defects caused in the transportation process.

2. Check carefully whether marks and the nameplate on the valve meet operating requirements.

3. This valve can be installed on pipelines at any angle.

4. This valve shall be fully open or fully closed in running and not be used as a throttle valve, or else its sealing surfaces will be washed and get worn faster.

5. For long-term storage, it shall be stored in a dry and ventilated room with periodic check to avoid rust.

6. Knocking shall be avoided in the transportation process.

ZheJiang ZhongCheng Valve CO.,LTD.
E-mail: sales@zc-valve.com Tel£º+86-0577-67331552