The RVD steam control valve type can be applied for highest values of pressure, temperature and mass-flow-capacities. Steam control valves are used as pressure reducing valves in all types of the industry where steam requires to be flashed at Iower pressures.
Design and Function
The valve body has horizontal inlet connections firmly welded, whereas the seat and the joined conical widening are removable. The valve stem and the cone are made in one piece. Also the valve stem with its plug is manufactured in one piece. The stem is pivoted vibration-free between a bush in the valve cover and a second bush in the valve seat. The cover and the valve are fastened together by a clamping device which facilitates assembly. The noise level is kept low by the special design of the internal parts. The pulse from the control unit causes the valve drive to change position of valve cone. The gap between the seat and the cone allows the medium to flow. The valve opens against the pressure of the medium. A complete seal in the closed position is secured.
Simple, rugged construction and first class manufacture ensure trouble-free operation. Favorable price and short delivery times are achieved by modular construction. Several types of actuators can be adopted for operation.