Leakage Steam Control Valve

Description: Leakage steam control valve is for draining excessive steam from the header. The control valve is operated by the piston of the electro-hydraulic actuator which is moved in the open and closed direction by the pressure of the control fluid. Leakage steam control valve is constructed by the piston rod which is connected to the valve system via the coupling the cam and the ring. The scale shows the position of the valve. The gland steam control valve is situated in the gland steam pipe of the seal steam systems. The critical function performed by the gland steam control valve, is to supply the shaft seals with seal steam during start-up and in the lower load range. The other function is to keep the set pressure in the header constant in order to prevent air penetrating the vacuum of the shaft seals. The control valve is operated by the piston of the electro-hydraulic actuator which is moved in the open and closed direction by the pressure of the control fluid. The piston rod is connected to the valve stem via the coupling. The steam flow is regulated by the internal pilot valve, which is integral with the actuator.