ST6115 ST6135 ST6160 ST6141


Pneumatic actuators for control and on/off valves
  • Reversible direction of action
  • Stroke max. 30 mm / max. 50 mm
  • Max. air pressure 6 barg
  • Actuating force max. 9 kN / max. 18 kN (ST 6121 / ST 6122)
  • Approved by German Technical Inspectorate (TÜV) as an actuator for water and steam with safety function in heating systems
Diaphragm area Actuator Spring range Stroke Valve series
120 cm² ST 6115.A6.-3S 0,9..2,0 bar 20 mm PV 6200
280 cm² ST 6135.B6-2G
ST 6135.B6-6G
0,2..1 bar
0,8..3 bar
35 mm
35 mm
PV 6200
530 cm²
530 cm²
530 cm²
ST 6160.A6-6G
ST 6160.C6-3G
ST 6160.C6-7G
0,8..2,8 bar
0,3..1,3 bar
0,6..3 bar
40 mm
60 mm
60 mm
PV 6300
1000 cm² ST 6175.B6


ST 6141.C6
0,4..1,2 bar
0,8..2,3 bar
1,2..3,3 bar
1,2..2,5 bar
60 mm
60 mm
60 mm
80 mm
PV 6400