Pressure Independent Control Valve With Electric Actuator 1 1 4 In. NPT 2 Way 20 GPM Plated Brass Trim DCA CV90=935 CV60=270 5" VLV NPT 24VDC Rango de Presion:0 a 1" w.c. 5" VLV NPT 24VDC Duct CO2 Sensor + 2% RH Transmitter 18k Ohm Thermistor 0 to 2000 5000 ppm (programmable) 60 Sec Response Time NDIR Sensor 4 20 mA or 0 to 10 VDC Self Calibrating NPT 2 Way 20 GPM Plated Brass Trim DCA Profile Modulating Floating(Fail Closed) 24 Vac Pressure Independent Control Valve With Electric Actuator 1 1 4 In