This is a DEVELON pressure switch, part number 940301-13842. A pressure switch monitors pressure in the system it is installed on and opens or closes an electrical circuit at its set point. That signal drives a warning, a shutdown, or another control function on the machine.
Specifications
Part
Pressure switch
Brand
DEVELON
Part number
940301-13842
Store SKU
7534353
Common questions
What equipment does this pressure switch fit?
Specific machine models are not listed for this part. Match DEVELON part number 940301-13842 against your parts book or the number on the switch you are replacing before ordering.
What are signs a pressure switch needs replacing?
Common signs include a pressure warning that stays on or never comes on, intermittent warnings with no matching pressure problem, and an unexpected shutdown. Physical damage to the connector or housing is another sign. Check actual system pressure with a gauge first to confirm the fault is the switch and not the system.