Durga Trading Co. Offers Direct Coupling type Air Handling Valve. Durga Trading Co. Supplies various products on Air Handling Control Unit and Fan Coil Control Unit like Valve Actuators, Temperature Controllers, Thermostats and Valves. The Direct Coupling type Air Handling Valve of V50-58 Series models is a two and three way threaded connection control valve used with direct coupled electrical actuators. The Air Handling Valve finds application in air handling unit and comes in different sizes ranging from 15mm to 80mm.