VRup Volume Flow Controllers are suitable for constant and variable flow applications. VRup Volume Flow Controllers can be used in the both fresh air and exhaust air ventilation systems. They can be installed at any angles. VRup Volume Flow Controllers consist of galvanized steel sheet casing and control mechanism. The bearing axles are made up of stainless steel and the air flow measuring system is made up of aluminum steel. They can be supplied with 5 different 24 V AC/DC actuators. They can be operated in the “constant”, “variable 0 - 10 V, 2 -10 V” and “3-step” mode.