Structure And Function; Structure; Function; Control Functions - Burkert 2030 Manuel D'utilisation

7. sTrucTure and funcTiOn
7.1.

structure

The piston-controlled diaphragm valve consists of a pneumatically
actuated piston actuator and a 2/2-way valve housing.
Fig. 3: Structure and description
22
Transparent hood with position
indicator
Actuator housing
Upper control air connection
(for CFB and CFI)
Lower control air connection
(for CFA and CFI)
Diaphragm socket
Diaphragm housing
Line connector
English
Types 2030, 2031, 2031 K

Structure and Function

7.2.

function

Spring force (CFA) or pneumatic control pressure (CFB and CFI)
generates the closing force on the diaphragm pressure piece. The
force is transferred via a spindle which is connected to the actuator
piston and the valve is opened and closed.
7.2.1. control functions
Control function a (Cfa)
Closed by spring force in rest position
Control function B (CfB)
Opened by spring force in rest position
Control function i (Cfi)
double-acting actuator without spring
A
P
B
P
A
P