Unox Pressure Reducing Control Valve

What is a Pressure Reducing Control Valve?

A pressure reducing control valve is a type of control valve used to regulate the pressure of a fluid within a system. It is commonly used in industrial and commercial applications to maintain consistent system pressure regardless of fluctuations in demand or other external factors. The valve operates by automatically adjusting the flow rate of the fluid passing through it to maintain the desired pressure. This is usually achieved with a spring-loaded diaphragm or a sliding piston that responds to changes in pressure. Depending on the application, the valve can be operated manually or via an automatic control system.

How Does a Pressure Reducing Control Valve Work?

Hydraulic pressure reducing control valves are used to lower high pressure values in water distribution networks to a desired lower level. These valves maintain the set outlet pressure regardless of flow and discharge variations in the network. When selecting the valve size, the pipe diameter does not have to match exactly. The valve size can be slightly smaller or larger than the pipe. Cavitation values should also be considered when selecting the valve size.

What is a Control Valve?

A control valve is a valve that regulates the flow of a fluid by changing the cross-sectional area of the flow path in response to a signal from a controller. Control valves enable the regulation of pressure, temperature, flow rate, and level in all types of process systems. They ensure the efficient transfer and control of fluids such as cold water, hot water, steam, hot oil, and gas without losses in industrial plants.

General Features of Pressure Reducing Control Valves

• Hydraulic pressure reducing control valves operate fully automatically with the network pressure, without requiring external energy.

• The 2-way pressure reducing pilot valve on the control valve maintains the desired outlet pressure regardless of flow fluctuations in the network.

• If the inlet pressure in the network falls below the desired outlet pressure, the valve fully opens.

• In water distribution networks with variable flow rates, it is recommended to connect a smaller pressure reducing control valve as a bypass to the main valve.

• The valve automatically closes when there is no water in the network.

Components

• Hydraulic Control Valve

• Pilot Valve

• Pilot Valve Adjustment Screw

• Ball Valve

• Strainer

• Needle Valve

• Pressure Gauge

Pressure Reducing Control Valve