References
Constructer of petroleum installations "Naftomontaż" Co, ltd confirms that Automation Machinery Plant POLNA S.A. in Przemyśl performed the ordered work with due care, taking into account the latest technical solutions, and in accordance with existing regulations and standards, as well as with good engineering practice.
Andrzej Liput
Budownictwo Naftowe NAFTOMONTAŻ- Spółka z o.o.
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DIAPHRAGM MULTI-SPRING PNEUMATIC ACTUATORS TYPE P1/R1
The multi-spring diaphragm pneumatic actuators of P1/R1 type are applied for control operation of control valves and other positioning elements in industrial automatic systems.
There are three design options of the acutators:
- direct action (air - advances the steam) - type P1,
- reverse action (air - retracts the steam) - type R1,
- direct action, handwheel - type P1B,
- reverse action, handwheel - type R1B
| Active area of the membrane | 400, 630, 1000, 1500, 1500T cm2 |
| Stroke | 20, 38, 50, 63, 80, 100 mm |
| Spring range | 20 ...100 kPa do 180 ... 380 kPa |
| Working temperature | - 40 ... + 80°C |
| Handwheel | side |
| Maximum supply pressure | 500 kPa |
- completely reversible action, option to change spring range w/o extra parts,
- rigid structure of cast yoke,
- wide range of available forces,
- linear dependence of stem movement from control pressure, due to application of diaphragms with constant effective area,
- various spring ranges achieved by changing the number of springs and/or changing position of spacer elements,
- capability of the actuator to incorporate side-mounted handwheel,pneumatic or electro-pneumatic positioners, limit switches, air sets, three-way pneumatic solenoid valves, lockup valves, position transducers,
- high strength of diaphragms, springs and packings,
- low weights and small overall dimensions.
