How to choose the right valve?

 Valves are mechanical devices that control the flow and pressure of fluid in a hydraulic or pneumatic system. They are essential components of the Duplex Pipe system transporting liquids, gases, vapours, dirt, etc.

Various types of valves are available, each with its characteristics, performance and function. There are also different types of actuators (manual, pneumatic, electric ...).

How to choose a valve?

To select the correct valve, it is necessary to define its function. Will it regulate or stop the fluid flow?

Then it is necessary to check what type of substance will circulate: gas or liquid. Will it be a corrosive, chemically neutral, food-grade or medical liquid that requires special sanitary and hygienic conditions?

It is essential to know the actuation system of the valve to determine whether it is manual or automatic. In the first case, the presence of a person on site is required to control the 904L Tube valve. In the second case, the valve can be controlled remotely, for example, from the control panel.

Finally, it is significant to be acquainted with how the valve will be included into the system. Therefore the type of installation, especially if it is to be welded, bolted through flanges or threaded connections.

Once you have identified these various elements, you can focus on the technical specifications of your installation, in particular flow and pressure, which will allow you to determine the valve sizing.

How to determine valve dimensions?

To determine the size of the Titanium Valves, it is necessary to know the parameters associated with the operation of the system.

The pressure is an important factor that must be considered to avoid undersizing of the valve on the one hand and avoiding problems with leaks or bursts.

Operating temperature, i.e. the temperature of the circulating liquid as well as the ambient temperature around the valve body must be identical. It is important to know the temperature extremes at which the valve will operate. To select a valve specifically designed for these conditions, particularly in terms of the materials used to make the body, closure system and sealing parts.

Working pressure, i.e. the pressure to which the fluid is applied across the valve.

Liquid flow rate and flow rate. Flow rate and nominal flow rate are important elements to help you select the correct valve, especially if it will be used to control that flow. The flow coefficient (Kv) is a theoretical value determined by the manufacturer. It allows the nominal flow of the valve to be calculated. This factor can be specified in litres per minute (l / min) or cubic meters per hour (m3 / h). Valve manufacturers provide tables to determine this factor based on the required flow and nominal size.

Nominal diameter (DN) of the circuit on the valve. This criterion is necessary to avoid oversizing the valve. It can lead to unstable operation of the installation, or under-sizing of the valve, which can lead to a significant drop in pressure and rapid damage to the valve.