C & R [Sales & Services] Pvt. Ltd. Manufactures Dual Plate Non-Return Valves with Expanded Flow Area. C & R [Sales & Services] Pvt. Ltd. Also manufactures different types of Valves. Dual Plate Non-Return Valves with Expanded Flow Area can be installed in both horizontal and vertical positions. Dual Plate Non-Return Valves with Expanded Flow Area are available with maximum working pressure 25 kg/cm sq. Its maximum working temperature is 80°C.