1, using rubber or plastic membrane made of softsealing,sealingwell.Because the diaphragm is wearing parts shouldbereplacedperiodicallydepending on the media characteristics.
2, limited by the diaphragm material, diaphragm valves for low pressure and relatively high temperature applications.
3, diaphragm valve in the form of the structure can be divided into: house type, DC type, the cut-off type, straight through that gate type and the right angle type six; connection usually in the form of flange connections. According to the drive can be divided into manual, electric and gas dynamic three, and pneumatic drive is divided into normally open, normally closed type and reciprocating three kinds.
The 4 are not generally suitable for temperatures above 60 degrees and the delivery of organic solvents and strong oxidizing medium in the pipeline, it should not be used in high pressure pipeline.