Pneumatics Tools

What Are The Designs Of Pressure switches?   

jauhar khan
@jauhar123 | Posted 19 Sep. 2019

Several designs of pressure switches are in circulation. These designs are typically a variant of two of the most commonly known designs. They are: 


Diaphragm Actuated Pressure Switches

The diaphragm-actuated pressure switch incorporates an elastic diaphragm. The diaphragm’s life is affected by excessive pressure cycling. It can withstand wide pressure changes on each operating cycle of the switch. However, the pressure imparted on the diaphragm during the normal operating cycle should not exceed the maximum value for the switch. Diaphragm Pressure Switch is typically used in low-pressure applications. 

Series DM 601

Piston Actuated Pressure Switches

Piston actuated pressure switches are very popular in high-pressure applications. They are commonly used in hydraulic applications. Hydraulic systems experience higher pressure, produce more surges, have wider pressure variations since the medium does not compress. 

Selecting between diaphragm and piston actuated pressure switches depend on various factors such as 

  • Range differential

  • Maximum allowable pressure

  • Medium (pneumatic or hydraulic) 

  • Surges