Pneumatic Ceramic Double Disc Gate Valve

ZC VALVE’s Pneumatic Ceramic Double Disc Gate Valve is mainly used in feeding and dumping the dry powder and the transport pipeline, which not only adopt toughening ceramic as shut off and wear out resistance material, but also design construction of pressure self-sealing and valve disc auto-rotate, so as to the sealing surface within the dry powder get more wear resistance in process of opening and closing frequently, thereby, which guarantee the high requirements of sealing performance of this valve and long working time.


Size:	2"-12"
Material:	WCB Stainless steel Ductile Iron
Color:	Blue with epoxy Yellow with epoxy
Operation type :	Pneumatic actutor Electric actuator Handle wheel
Availability:



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Model:
WZ644TC
Brand:
ZC
Code:
ZCTCD002

Product Description

Product Description

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.

Advantage

1. Sealing pair is made of structural ceramics，which have perfect performance to resist wear and flushing.

2. Two-side sealing can realized due to double disc structure of the pneumatic ceramic double disc gate valve.3. It inserts spring between double valve discs to ensure self- sealing through bi-directional flexible preload pressure of spring, having characteristics of low pressure bi-directional sealing and without dust clogging phenomenon in the process of the opening and closing of valve

.4. The valve disc rotational motion can avoid the ash deposition on the sealing surface during opening and closing, so the valves have much longer service.

5. The blow sweep port or automatic blow sweep device can be set on the valve body according to different operating conditions.

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.

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