PUM series intelligent multi turn actuator is applied in controlling various valves and other similar products, include butterfly valve, ball valve, gate valve, control valve and etc. It is widely applied in petroleum, chemical, water treatment, shipping, paper making, power plants, heating, building automation and other industries. PUM series multi turn actuator combine the characteristic of intelligent and reliable, and expand richer application based on basic modular product. It can meet various kinds of working conditions. There are different PUM valve gear boxes can be configured which greatly expanded the torque range or turn the multi-turn actuator into quarter turn actuator, linear actuator to meet the different requirements.

Performance Features

• Shell

  The main shell if made of aluminium, lighter weight. The surface coating of epoxy resin, and go through the 12 step of coating protective treatment, with high corrosion resistance, the protection grade is IP67, NEMA4 and 6.

• Motor

  Fully enclosed squirrel-cage motor, small size, large torque, and small inertia force, insulation class F, build in thermal protection switch to avoid damaging the motor.

• Lubrication

  Using oil immersed type, it can provide excellent lubrication and cooling in case of high strength, large temperature different and high torque, the oil is more stable.

• Terminal box

  Terminal box, which is double sealing and separate enclosure protection, assure the sealing integrity of the electronic component if open the box cover to make the on-site wiring. The motor and the controls are connected by 29 contacts.

• Valve control

  Traditional potentiometer is eliminated, and adopt magnetic induction absolute encoder to provide position accuracy. It can record the precise valve position without battery if actuator power off.

• Infrared setting

  The setting and diagnostic of the actuator can be processed via sealing display screen, without opening the housing. The valid distance between the setting tools and display screen is about 1-1.5m.

• Local control

  Local control switches and locking type selector switch local/stop/remote are magnetic switches, controlled by magnetic reed, thus assure the damp proof sealing inside of the actuator.

• Manual structure

  The handle is designed to ensures safe, reliable, labor-saving and small. When the power outage, press the red button in the middle of handwheel to make motor and actuator disconnected, and start manual operation. Because of the automatic clutch between the motor and the operating shaft, it is easy to turn to manual operation even if the actuator at the maximum torque . After starting the motor, automatically breaks away from manual operation. When performing motor operation handwheel does not work .(Note: In the situation of no electricity, the electric actuator will remain permanently manual mode).

• Space heater

  It is used to control temperature and remain the internal electrical components dry, it can avoid the moisture condensation inside the actuator because of the change of the temperature and weather.

• Torque switch

  Providing overload protection, it can shut down the power automatically when jamming to avoid damaging valves and actuators, torque is adjustable within a certain range.

• Self-locking

  Precision worm mechanism can efficiently transfer large torque, high efficiency, low noise (max 50 dB), long life, and have self-locking function to prevent the inversion, transmission part is stable and reliable.

• Anti-off bolt

  The bolts will attach to the case and not fall off when removing the shell, external screws are made of 304 stainless steel.

• Installation

  The bottom mounting dimensions conform to international standard ISO5210，the drive sleeve can be removed for processing as needed. It can be installed vertically and horizontally.

• Circuit

  The control circuit in line with single-phase or three-phase power supply standard, circuit layout is compact and reasonable , (It can be designed according to customer requirements).