DS Pipe and Steel Supply

Pressure Reducing Valves

Pressure reducing valves are designed to reduce and maintain a consistent pressure level in a piping system. They are commonly used in the piping industry to regulate the pressure of fluids such as water, steam, air, or gas flowing through pipelines. 


Pressure reducing valves typically consist of a main valve body, a diaphragm or piston mechanism, and an adjustable spring-loaded mechanism. The diaphragm or piston senses the downstream pressure and modulates the valve opening to adjust the flow rate and maintain the desired outlet pressure. The adjustable spring allows operators to set the desired outlet pressure by adjusting the spring tension.


The primary function of pressure reducing valves is to reduce the inlet pressure of a fluid to a lower, predetermined outlet pressure and maintain it at a constant level, regardless of fluctuations in the upstream pressure or flow rate. This ensures that downstream equipment, fixtures, and piping are protected from damage caused by excessive pressure.

Safety and Energy Efficiency

Pressure reducing valves are critical in protecting downstream equipment and piping from damage due to excessive pressure. They prevent pressure surges and water hammer effects that can occur in the piping system, which can lead to leaks, bursts, or equipment failure. By maintaining a stable and controlled pressure level, PRVs ensure the safe and efficient operation of the entire system.

Pressure reducing valves can contribute to energy efficiency by reducing the pressure of fluids to the optimal level required for downstream processes or equipment. This helps minimize energy consumption associated with pumping or compressing fluids at higher pressures, resulting in cost savings and reduced environmental impact.

Installation and Maintenance

Pressure reducing valves are typically installed downstream of the main supply line or at specific points in the piping system where pressure regulation is needed. Proper installation and periodic maintenance are essential to ensure the reliable operation of PRVs. Maintenance tasks may include inspecting for leaks, cleaning or replacing internal components, and adjusting the outlet pressure as needed.