What problems do pressure reducing valves commonly have?

When it comes to addressing concerns about the problems that can arise with a pressure reducing valve, it is essential to start by giving a detailed explanation of how these valves work.

This question commonly attracts interest both from users who already have these valves in their systems and from those who are considering installing them.

It is important to understand that pressure reducing valves, also known as pressure regulators, are critical components in the management of gas and hydraulic systems.

These valves are designed to convert a high inlet pressure into a lower, constant outlet pressure, thus ensuring safe and efficient system operation.

They work regardless of variations in inlet pressure or in downstream flow demand. This is essential in applications where a precise outlet pressure is required to prevent damage to equipment while ensuring efficient operation.

In addition to their primary role in regulating pressure, these valves also help minimize the risk of water hammer and reduce noise in the piping, contributing to smoother, less troublesome system operation. A thorough understanding of how to select and maintain these valves can make a big difference in preventing common problems, such as premature wear and system failure due to incorrectly regulated pressure.

The 5 most common pressure reducing valve problems

Using steam in any manufacturing process is very efficient and economical, but if the parts that handle the steam are not working at their optimal capacity, this could lead to extra costs that ruin what was originally intended as an efficient use of resources.

If you are using a part of this type, below we explain the main problems that can arise with a pressure reducing valve.

The controlled pressure overshoots under normal load conditions

This could mean that something is preventing the valve from closing tightly under normal operating conditions. There are two main reasons why your pressure reducing valve may fail due to excess controlled pressure under normal load conditions:

• Dirt or foreign material has lodged between the pilot valve seat and the head.
• Foreign particles have lodged between the head and seat of the main valve.

To solve this problem, you must inspect and clean the space between the head and the seat. We also recommend making sure that the pressure sensing line is not blocked, by removing, inspecting, and cleaning the orifices and piping.

The controlled pressure is exceeded only under light loads

There are four main reasons why your pressure reducing valve may fail by overshooting under light load conditions:

• The main valve head and seat may be worn or have dirt between them. To fix this, inspect and clean the valve head and seat.
• The valve may be greatly oversized. In this case, you should proceed to repair the part.
• The bypass valve does not close tightly or is leaking. As in the previous case, you must check and repair the part.
• There is dirt or foreign material on the stem and guide of the main valve. To solve this, you will need to remove, inspect, and clean the parts.

The pressure reducing valve fails to open

There are six fundamental reasons why the valve may not open. Below we share each of them, along with its solution:

The outlet pressure is low

There are five main reasons why your supply pressure is low, causing your pressure reducing valve to fail: 

The pressure reducing valve fails to close

There are five main reasons why the valve does not close, causing your pressure reducing valve to fail: 

Valfonta: your trusted pressure reducing valve manufacturer

At Valfonta, we are a family-owned company with more than 50 years of experience in valve manufacturing. All our products carry the guarantee of a brand with long experience in the sector.

So if you have any questions about our valves, or if you need custom valves, contact us and we will get to work for you right away.

You can do so by calling 933720888, sending an email to valfonta@valfonta.com, or filling in the form on our website. We look forward to hearing from you!