Diaphragm Sludge Discharge Valve PM747X
Keywords:
Valve Encyclopedia
Category:
- Product Description
-
Overview:
The 100C angular pneumatic sludge discharge valve is suitable for water treatment plants and is used to discharge sludge and wastewater from settling tanks. This valve features an angular design, with a partition dividing the internal cavity into two sections: a control chamber and a flow passage. The control chamber is further divided into upper and lower sub-chambers by a diaphragm. The valve seat has a flat-bottom structure, and its sealing surface is coated with ceramic, offering exceptional wear resistance and corrosion resistance. Additionally, this design effectively prevents the accumulation of debris and ensures long-term reliable operation.
The top of the valve cover and the side of the valve body are equipped with threaded holes. The pressure source enters and exits the upper and lower control chambers via control lines, respectively. The opening or closing of the sludge discharge valve is controlled by regulating the pressures in the upper and lower chambers through solenoid valves. In the event of an unexpected loss of the control air supply, the sludge discharge valve can remain closed under the pressure of the incoming water. (The external pressure control source is an air supply.)
Main specifications
Pressure rating: PN6
Maximum working pressure: 0.6 MPa
Valve seat test pressure: 0.66 MPa
Valve body test pressure: 0.9 MPa
Flange pressure rating: PN10 or as specified by the customer
Simplified Diagram of the Main Valve Body Structure and Material List
Piping Diagram
Explanation of the Air Source Control Principle
1. Close the valve
The two 5/2 solenoid valves are conducting: 1.2 is conducting, and 3.4 is conducting.
The pressurized air source enters the upper control chamber at 100°C, while the pressure in the lower control chamber is vented. 100°C closes.
2. Open the valve
The two 5/2 solenoid valves are conducting: 1.4 is conducting, and 2.3 is conducting.
The pressurized air source enters the upper control chamber at 100C, while the pressure in the lower control chamber at 100C is vented. The 100C valve closes. The solenoid valve is equipped with a manual override device, allowing manual control of the sludge discharge valve in the event of power failure.
Preparation Instructions
Main material
Serial number
Name
Material
1
Valve body
QT450-10
2
Valve
QT450-10 + Rubber
3
axis
2Cr13
4
Partition
QT450-10
5
O-ring
NBR
6
Lower die plate clamp
Q235
7
Diaphragm
NBR+Cord Fabric
8
Upper mold clamping plate
Q235
9
Double-head bolt
8.8 magnitude
10
Nut
Level 8
11
Valve cover
QT450-10
12
Eye bolt
20#
13
Nut
A2-70
14
Bolt
A2-70
15
O-ring
NBR
16
Shaft sleeve
ZCuAl10Fe3
17
O-ring
NBR
18
Sealing ring
NBR
19
Thin nut
A2-70
Main external dimensions and connection dimensions (mm)
Nominal diameter
D
phi K
C
F
N
phi d
phi F
H1
H2
H
DN150
285
240
19
3
8
23
340
410
225
143
DN200
340
295
20
3
8
23
435
501
275
200
DN250
395
350
22
3
12
23
536
610
325
238
DN300
445
400
24.5
4
12
23
640
705
375
285
The flange connection has a pressure rating of PN10; other specifications and dimensions can be customized according to customer requirements.
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Company address:
No. 55, Jinjiangnan Road, Shangjie District, Zhengzhou City, Henan Province
Phone:+86-371-68122889
Email:zzsfmjt@126.com
Mobile phone:+86-13703990948
Fax:0371-68122899
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