The basic working principle for this DA-SAPCV is force balanced principle achieved by spring diaphragm mechanism. The fluid pressure acts on the wider area of diaphragm and the balancing force is provided by the spring. Thus fluid force itself is an operating media and the best control is achieved even for the smallest deviation in controlled parameter as its (fluid force) acting on the wider area of diaphragm.
D100 Series :- Downstream Pressure Control Valve
Direct Acting Downstream Pressure Regulating Valves – also, called as Pressure Reducing Valves – are meant for reducing the source pressure and regulating the outlet / downstream pressure at the pre-determined set value required for the processes. With direct acting Regulators precise pressure control can be achieved at specified process requirements.
As outlet / downstream pressure tend to drop due to consumption at process, the spring force pushes the diaphragm down, due to which stem & soft seating disc also moves down and opens the port. As soon as outlet / downstream pressure is compensated, the diaphragm pushes up, the stem & soft seating disc also moves up and the port opening closes.
This series of pressure regulating valves are self actuated or self contained and hence, do not require any external energy like pneumatic air or electricity to operate.
As a standard we provide trim material as AISI 316. Wide range of material is available to suit various services for different process fluids including corrosive fluids. NACE compliance can be provided for sour services
The change in set pressure can easily be achieved by turning the set screw at site. Also, a wide range can be availed with the certain spring and in case, if needed, the spring can be changed at site for achieving desired set pressure with certain limitation.
What is Blanketing Blanketing also called as ‘padding’ is the process of introducing and maintaining inert gas into the empty space in a storage / process vessel. This is done