product name: electric valve product pic: the qm/qf series of electric valve actuators are used in heating, ventilation, and air-conditioning (hvac) applications. the qm series of electric valve actuators are modulating control actuators used with controls that provide an analog output of 0 to 10vdc, 2 to 10vdc or 4-20ma. the internal selector plug can be used to reverse the direction of action. the qf series of electric valve actuators are controlled by an on/off output. features l low power consumption l position feedback by signal l direct/reverse acting l 4-20ma/0-10v/2-10v choice l maintenance free l quick and easy installation l no separate linkage required l accurate valve positioning l indicator continuous position indicator l manual override non-clutch design l gear permanently lubricated and self locking l stall protection built-in thermal protection technical data: valve flow media cold and hot water, water with max. 50% volume of glycol temperature of medium -10°c.. +100°c rated pressure 1600 / 2760kpa leakage rate air bubble-tight (bo 1, din 3230) closing pressure 1000kpa size dn25-dn100 material body cast copper or stainless steel ,shaft stainless steel, actuator actuator qf/qm output torque 10, 16, 25, 40n.m power supply ac220v or ac/dc24v run time about 120s operating power 5va output angle 90°± 3° on/off control signal 1 wire or 2 wire control control signal 4~20ma, 1~5v, or 0(2)~10v feedback signal dc0 -10v installation position upright to horizontal（no upset） protection class ip54 ambient conditions - 10°c. to. +55°c 0..90% rh weight 1kg material flame-resistant abs