Excess Pressure Control Valve PCV 10-73

Working Range : Self –operated pressure control valve (Excess Pressure Control Valve) is used to counteract excess pressure of a system on the adjusted set point. Its adjustable pressure range is 0.2…28 bar and 3…400Psi and its size varies from DN15 to DN100 or 1/2″ to 4″. Its nominal pressure is PN16 or PN40, Working Classes is 150 to 300 and Maximum Temperature is 350°C OR 662°F. This device is made based on DIN and ANSI standards. 41-23 valve is usable for liquid, non-flammable gases

Function : Type 10-73 steam pressure reducing valve controls the output pressure and keep it in the special set point automatically. This valve is normally closed and as the output pressure increases, it gets gradually open. This valve is suitable for all fluids except inflammable gases. The correct direction of steam in the valve is indicated by one arrow on its body. Input pressure is transmitted to the actuator by control line (via condensate chamber and connection tube, if fluid is steam), and entered to the diaphragm then input pressure is conducted to actuator by shaft to plug in effect of this, plugand seat are divided and open the egression  and in this way pressure rang is controlled. This device has one accordion piece which balances input and output pressure differences .This valve is a self-operated one and does not need any extra forces.

Installation : This valve is only suitable for installation in horizontal pipeline. The flow direction in the valve must be corresponded with the arrow on its body and the actuator of device must be installed upside-down. Before pipeline designation, pay attention to the input and output pressure valve, size and adjusted range.

To protect the valve from pipeline condensation, the pipeline must be installed with a moderate slope to the flow direction, or you can use a steam trap too. After installation you have to be sure that the valve is not pressed in the pipeline. According to the decreasing pressure in the output of valve, it is recommended to choose bigger diameter for output side of valve. To adjust pressure on the set point, use a regulating pressure nut. To protect diaphragm from steam and extra temperature a condensation chamber is used. Before starting up, this chamber must be fulfilled with water. If valve is heavy or it is pressed in the line, you can use a supportive stand to avoid vibration. To prevent unwanted pieces entrance to the valve, use a suitable strainer in its input side.