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.