Stainless Steel Diaphragm Valve for Pharmaceutical and Chemical Fluid Equipment
Application and operation
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◆ Welding diaphragm valve is widely used in chemical industry, food, environmental protection and other fields, used for the control of liquid or gas flow.
◆ In chemical production, it can be used for the input and output of chemical raw materials, reactor control, raw material mixing and other aspects.
◆ In food processing, it can be used for the control of condiment, fruit juice, sauce and other liquid and paste.
◆ In the environmental protection engineering, it can be used for waste water treatment and waste gas treatment.
Operational principle
The working principle of the welded diaphragm valve is to the compression parts through the elastic diaphragm, and the compression parts are moved up and down by the valve stem operation. When the compression member rises, the diaphragm is lifted to form a channel; when the compression member drops, the diaphragm presses on the valve body and the valve closes. The opening and closing of the valve is usually achieved by the connecting shaft of the electric device to drive the valve stem nut, and it can also be operated manually.
Welded diaphragm valve components
|
Specification |
D |
L |
L1 |
T |
|
1/2" |
12.7 |
114.3 |
88.9 |
1.65 |
|
3/4" |
19.05 |
114.3 |
88.9 |
1.65 |
|
1.0" |
25.4 |
114.3 |
88.9 |
1.65 |
|
1.5" |
38.1 |
152.4 |
127 |
1.65 |
|
2.0" |
50.8 |
152.4 |
139.7 |
1.65 |
|
2.5" |
63.5 |
190.5 |
165.1 |
1.65 |
|
3.0" |
76.2 |
228.6 |
177.8 |
1.65 |
|
4.0" |
101.6 |
304.8 |
231.8 |
2.11 |
Characteristic
Welding connection mode: The welding diaphragm valve is closely combined with the pipe system by welding connection mode, which eliminates the risk of leakage and improves the tightness of the system.
The welding method usually includes welding type I connection (welding at both ends) and welded type II connection (one end welded and the other end inserted).
Excellent sealing performance: the valve is made of rubber or other elastic material diaphragm, which controls the sealing and opening between the diaphragm and the valve seat through the lifting and down movement of the valve stem to effectively prevent the leakage of medium.
Strong corrosion resistance: the valve body is usually made of stainless steel (such as 304,316L, etc.), which can adapt to a variety of corrosive media to ensure the stability and reliability of the valve in the harsh environment.
Strong flow control ability: it can control the flow rate and flow rate by rotating switch or electric device to meet the different process requirements of the production line.
Isolation medium: a structure with diaphragm isolation, can effectively isolate the medium, prevent medium contamination and cross contamination.
Product parameters
|
Driving Method |
Manual |
|
Maximum Working Pressure |
10bar |
|
Maximum Operating Temperature |
150℃ |
|
Connection |
Welded |
|
Body Material |
SUS 316L |
|
Diaphragm material |
PTFE/FPM/EPDM |
Welding method
Various welding diaphragm valve welding methods, including manual welding, automatic welding, laser welding, friction welding, resistance welding, welding of molten polar argon arc welding and ultrasonic welding. Each welding method has its own characteristics and applicable scenarios, which should be determined according to the specific requirements and process requirements.
* Scope of application: CIP cleaning section.
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