What are the characteristics of pneumatic diaphragm valve


The main advantages of pneumatic diaphragm valves: 1. T […]

The main advantages of pneumatic diaphragm valves:
1. The valve does not need a separate valve stem packing sealing structure, and the diaphragm plays a role of sealing the valve stem while cutting off the medium.

2. The flexible and strong diaphragm is reliable in closing, and can even cut off the dirty liquid well. Therefore, the pneumatic diaphragm valve is not only suitable for the food industry and the medical and health industry, but also suitable for some difficult-to-transport media and more dangerous media.


3/4-2" Plastic PVC MF Single Union Ball Valve

Use: Agriculture irrigation/Mariculture/Swimming pool/Engineering construction
Style Number: XE05002-XE05006
Color: Many colors available for choice
Material: UPVC
Sample: Free provided
Certificate: ISO9001:2015, SGS, GMC, CNAS
Delivery: 7-30days
Packing: Carton, Polybag, Color Box or Customized
Place of Origin: Zhejiang, China
Brand Name: XE
Application: other
Temperature of Media: Normal Temperature


Pneumatic diaphragm valve features: the diaphragm separates the inner cavity of the lower valve body from the inner cavity of the upper bonnet, so that the valve stem, valve disc and other parts above the diaphragm are not corroded by the medium, eliminating the need for a packing seal structure, and no medium leakage occurs. leak.
1. The diaphragm made of soft seal such as rubber or plastic has better sealing performance. Since the diaphragm is a wearing part, it should be replaced regularly depending on the characteristics of the medium.

2. Limited by the diaphragm material, the diaphragm valve is suitable for occasions with low pressure and relatively low temperature.

3. Diaphragm valves can be divided into six types according to the structure: straight-through type, cut-off type, house type, direct-flow type, gate type and right-angle type; the connection form is basically flange connection; according to the driving mode, it can be divided into manual, electric and pneumatic Three types, of which pneumatic drive is divided into three types: normally open, normally closed and reciprocating.

4. It is generally not suitable for use in pipelines with a temperature higher than 60 degrees and transporting organic solvents and strong oxidizing media, and it is not suitable to use pneumatic diaphragm valves in pipelines with higher pressure.