Control Functions; Mechanical Data - Burkert 2012 Operating Instructions Manual

Technicaldata
Control function B and I, flow direction below seat *
16
14
12
10
8
6
4
2
0 1 2
Pilot pressure [bar]
Fig. 5: Pressure diagram, control function B and I, flow direction
below seat
Actuator 225 is not provided for control function B and
I, as the performance data of actuator 175 to DN100 are
sufficient.
7.4.3 Media
Control media
Flow media
Type 2012
DN65 DN80
DN100
5
3 4 6
Neutral gases, air
W ater, alcohols, oils, fuels,
saline solutions, lyes, organic
solvents, vapour
7.5

Control functions

Control function A
Control function B
Control function I
7.6

Mechanical data

Materials
Valve body
Actuator
Seal materials
Packing gland
English
C losed by spring force in rest
position
O pened by spring force in
rest position
A ctuating function via recip-
rocal pressurisation
Stainless steel 316L
PA
P TFE
(NBR, FKM, EPDM on
request)
P TFE (carbon-filled)
11