.

Linear Actuators

 

These actuators are employed for the actuation of linear valves like Control Valves or Diaphragm Valves. They deliver the thrust values ranging between 1 KN to 100 KN directly to the valve stem. The different options of linear speeds are available.

 
Thrust Range : Min 1 KN; Max 100 KN
Enclosure : Weather-proof & Explosion-Proof
Power Supply : 115 VAC & 230 VAC-1Ph / 24 VDC / 415 VAC-3Ph
Linear Speeds : 0.25 mm/sec to 2.0 mm/sec
Duty : On-Off & Regulating
   
 
Special Feature :
1.
Fail-safe i.e. the valve can be driven to close or open position, in case of power supply failure.
2.
Smart / Intelligent Actuator Controls with Fieldbus Communication
Linear Actuators
 
 
 
The cover and switching mechanism design of the PSL valve actuators for a wider range of applications, with more space for electronics and reduced cost.
The PSL valve actuators fulfil all requirements for control valve actuators with remarkable efficiency. They position precisely, are very robust, reliable with long life, even at high loads. The individual components are of high quality and correspond to the harmonised European standards for machines and electrical
equipment. The basic adjustment of a PSL actuator on a valve is simple due to the central arrangement of the switching and sensor units, which are easily accessible. Optional accessories are quickly retrofittable due to the unique, perfected modular design.
Our customers who use the PSL linear and PSQ quarter-turn actuators profit from the unified modular concept of the accessories in several ways: There are fewer parts which need to be held in stock and the training for the sales, service and assembly personnel is reduced considerably.
Characteristics for simple handling and for long, trouble-free operation which only PSL actuators can offer in their class :
1. The tight cover, made of high-quality polycarbonate, sheet steel or cast aluminium allows outdoor installation.
2. High-quality and high-efficiency motor used for a precise positioning and controlling with high
duty cycle.
3. Spur gear with minimum backlash and low wear for precise positioning of the valvestem; high actuator output stiffness due to self-locking drive.
4 The proven disc spring coupling provides a defined setting force and tight closing; the rotation lock serves as a mechanical stroke indicator.
5. The mounting pillars made of non-corrosive steel for simple, versatile mounting to the valve.
6. Comfortable hand operation without switching from motor to manual operation; the handwheel simultaneously indicates the operation and direction of operation and helps during failure diagnosis.
7. Easily adjustable limit and signal switches.
8. Additional stroke switches or intermediate switches.
9. Single or double potentiometer.
10. Space heater.
11. Electronic position transmitter.
12. Electronic positioner.
Technical Data :
PSL201
PSL202
PSL202.1
PSL202.1
PSL204
PSL204.1
PSL204.2
PSL208
PSL208.1
PSL210
PSL214
PSL320 PSL325
Thrust
kN
1,0
2,0
4,5
8,0
10,0
14,0
20,0
25,0
Stroke
mm
50
50
50
50
50
65
100
Pillar distance1)
mm
100
100
100
100
100
100
155
Manual override
.
Handwheel knob
Handwheel
Handwheel dia.
mm
59
59
59
59
59
59
100
Weight approx.
kg
4,3
4,5
5,5
7,5
7,5
10
20
Velocity (at 50Hz)1)
mm/s
0,25
0,5
0,25
1,4
0,5
1,0
1,4
0,5
1,0
0,45
0,45
1,0
1,0
Motor voltages2)
.
24V / 115V / 230V / 400V 50/60Hz, 24VDC
Motor protection
.
Blockable motor
Thermal switch
.
.
.
Duty cycle as per IEC 60034-1,8
.
S2 30min S4 50% ED - 1200c/h
Conduit entries M20x1,5
.
2 pcs.
3 pcs.
Enclosure acc. to EN 60529
.
IP651)
IP 67
IP 65
Permitted ambient temperature1)
.
-20 to +80°C, modulating duty up to +60°C
Position indication
.
Rotation lock on mounting pillars
Mounting position
.
Any position, except cover pointing downwards
Gear case material
.
High quality aluminium die casting
Cover material1)
.
Polycarbonat
Cast
aluminium
Deep drawn
steel plate
Pillar material
.
Non-corrosive steel DIN 1.4104
Feedback rod material
.
Non-corrosive steel DIN 1.4104
 
 
 
 
 
 
 
 
 
 
PSL Valve Actuators
Modular accessories, easy retrofitting even on site
 
 
 
1) Standard, customisation possible
2) Three phase not available for PSL201
 
PS Actuators have proven for more than 20 years in industry and ships, in water and sewage technology, in heating and air conditioning, in power station and boiler house plants.
They are especially renowned for their functional conception without unnecessary features that may be prone to failure, and for a precise positioning or controlling and long trouble-free operation.