Multi-functional controllers
By means of a flexible and modular design, it is possible to combine several control functions into one controller to meet the most demanding requirements across a wide range of applications.In some applications, it may be necessary to control the flow temperature, limit maximum flow rate and primary return temperature by using a single multifunctional controller.
By means of a flexible and modular design, it is possible to combine several control functions into one controller to meet the most demanding requirements across a wide range of applications.
In some applications, it may be necessary to control the flow temperature, limit maximum flow rate and primary return temperature by using a single multifunctional controller.
A typical example of such a device is the AVQMT, which works like the AVQM but with an additional self-acting thermostat (type AVT / STM).
The pressure-independent valve controls the temperature on the secondary side and the self-acting thermostat limits the return temperature. In domestic hot water systems, the thermostat can be used as a safety thermostat protecting users from scalding.
Benefits of differential pressure and flow controllers in DH or cooling systems (constant flow) - Watch video
Product Highlights
- Eliminates pressure variations and provide optimum operating conditions with improved temperature control quality
- Made for demanding systems, resistant to corrosion, cavitation and dirt
- Connected system is protected against pressure surges, fluctuations, cavitation and noise
FAQ
Product types shown: 4
AVPQT
The AVPQT is a self-acting differential pressure, flow and temperature controller primarily for use in district heating systems. The controller closes on rising differential pressure or temperature, or when set max. flow is exceeded. AVPQT controller can be combined with AVT or STM thermostatic actuators. The AVPQT controller have a control valve with adjustable flow restrictor, combination piece with connection neck for thermostat, an actuator with two control diaphragms and handle for differential pressure setting.
AVQM-WE / AVQMT-WE
AVQM-WE is a self-acting flow controller with integrated control valve primarily for use in district heating systems. The controller closes when set max. flow is exceeded. AVQMT-WE is a self-acting flow and temperature controller with integrated control valve primarily for use in district heating systems. The controller closes on rising temperature or when set max. flow is exceeded. All controllers have special designed (pressure relieved) control valve insert.
AVQT / AVQMT
AVQT is a self-acting flow and temperature controller primarily for use in district heating systems. The controller closes on rising temperature or when set max. flow is reached. AVQMT is a self-acting flow and temperature controller with integrated control valve primarily for use in district heating systems. The controller closes on rising temperature or when set max. flow is reached. AVQT controller can be combined with AVT or STM thermostatic actuators. AVQMT controller can be combined with Danfoss electrical actuators AMV(E) (and controlled by ECL electronic controllers) and with AVT or STM thermostatic actuators. The controllers AVQT and AVQMT have a control valve with adjustable flow restrictor, connection neck for thermostat, connection neck for electrical actuator (AVQMT only), and a pressure actuator with one control diaphragm.
