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Functions & Features - DN range15 - 80 mm- kvs range4.0 - 80 m3/h- PN range16, 25, 40 bar- Max temp. range150º C- Connection typethread / flange- SettingvariableSelf-acting, medium-operated proportional controller, which through automatic opening of the valve prevents exceeding pressure before the valve (SAVA) and behind the valve (SAVD). The actuator features two diaphragms, which enable the valve to open in case of a defect at the control diaphragm. The controller is mainly used in district heating systems. SAVAFunction of the controller: the high up-stream pressure in front of the valve is led to the lower part (high pressure connection) of the diaphragm inside the controller. Through a channel in the controller, the medium pressure is led from the valve to the upper side (low pressure connection) of the diaphragm. The spring power of the control valve now affects the diaphragm, thus determining the effective differential pressure.SAVDFunction of the controller: the valve outlet pressure of the valve is led to the lower part (high pressure connection) of the diaphragm inside the controller. The upper side (low pressure connection) of the diaphragm is connected to the atmosphere. The spring power of the control valve now affects the diaphragm, thus determining the closing pressure.

Safety Pressure Controllers

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Self-acting, medium-operated proportional controller, which through automatic opening (SAVA and SAF/VFU 21) or closing (SAVD and SAF/VFG 21) of the va...

>	Safety Pressure Controllers

Self-acting safety pressure relief controller primarily for use in district heating systems. The controller is normally closed and opens on rising pre...

SAVA

Self-acting safety pressure reduction controller primarily for use in district heating systems. The controller is normally opened and closes on rising...

SAVD

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