Table of ContentsWhat are NO and NC Contacts?Definition of NO and NC ContactsWhat is an NO (Normally Open) Contact?Typical uses NO (Normally Open) ContactWhat is an NC (Normally Closed) Contact?Typical uses NC (Normally Closed) ContactRelay System Example in AutomationRelay DeactivatedRelay ActivatedHow these Contacts Work...

Table of ContentsImage 1: Sectional View of a Spring-Loaded Safety Relief ValveHow a Spring-Loaded Relief Valve Works7 Must-Know Definitions in Relief Valve DatasheetsDefinition 1: Built-Up BackpressureDefinition 2: Superimposed BackpressureDefinition 3: Total BackpressureDefinition 4: Cold Differential Test Pressure (CDTP)Definition 5: Set PressureDefinition 6: Re-seating PressureDefinition...