Burkert 2301 - Valve Functionality

10
Structure and function
Actuator cover
Actuatorhousing
Actuator/bodyinterface
withwrenchat
Globe body
Port connection
Flowdirectionarrowordigitsforindi-
catingtheowdirection
ExhaustportforCFA,CFB
PilotairportforCFI
PilotairportforCFA,CFB,CFI
2
1
Fig. 1: GlobecontrolvalveType2301,structureanddescription
6.2 Function
Thevalveseatisalwaysclosedagainstthemediumow.
Springforce(CFA)orpneumaticpilotpressure(CFBandCFI)gen-
eratetheclosingforceonthecontrolcone.Aspindleconnectedto
theactuatorpistontransmitstheforce.
6.2.1 Control functions (CF)
WARNING!
For control functionI – risk of pilot pressure failure.
WithcontrolfunctionI,thecontrolunitandresetarepneumatic.No
denedpositionisreachedduringapressurefailure.
▶ Toensureacontrolledrestartofthe device,rst apply pilot
pressureandthenactivatethemedium.
Control functionA (CFA)
Closedbyspringforceinrestposition
Type2301
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