What is important when purchasing a valve?

Valves are mechanical devices that control the flow rate and pressure of a fluid in a hydraulic or ventilation pipe system. They are an essential part of a pipeline system that transports liquids, gases, vapours, sludge, etc.


The market offers different types of valves, each with different properties, capacities and functions. Different operating modes can be selected: manual, pneumatic, electric, etc.


Tips for choosing a valve

To make the right choice of a valve, its exact function must first be determined. Should it regulate the flow of liquids or stop their circulation? Following this, it is essential to check which fluid is to circulate: a gas or a liquid? Is it a corrosive liquid, a chemically neutral fluid, food or a medical fluid that requires special hygiene requirements? The operating system of the valve is imperative to know exactly to know whether the Grade 12.9 Bolts is operated manually or automatically. In one case a person has to be on-site to operate the valve, while in the other the valve can be controlled remotely, e.g. from a control centre. Finally, it is important to know how the valve enters the circuit and thus into the assembly, or the type of installation is integrated, in particular, whether it has to be welded, bolted through flanges or screwed. Stainless Steel Check Valves manufacturers are the best manufacturers of the valve.


Once you have determined these individual elements, you can take a closer look at the technical characteristics of your installation, particularly in terms of flow rate and pressure. These values ultimately allow the dimensioning of your valve.


How do you dimension a valve?

To know the size a valve, you need to know the operating parameters of the circuit.

The pressure is being maintained properly to get your Grade 8.8 Bolts. It is not too small and an essential factor you must take into account to avoid problems with leaks or breaks. On the other hand, but also not to be dimensioned it big.


The operating temperature, i.e. the temperature of the fluid in circulation, as well as the ambient temperature of the valve housing, must be identified. You must understand the maximum temperatures the ASTM A193 Grade B8 can be exposed to select accordingly. This applies in particular to the materials that are used to manufacture the housing, the locking system and the sealing parts.


Flow rate and nominal speed are fundamental elements that will help you choose the right valve, especially if it is intended to regulate the flow rate. The flow factor is a theoretical value defined by the manufacturer with which the nominal flow of the valve can be calculated. The valve manufacturers offer tables to determine this factor based on the desired flow rate and the nominal diameter.


This criterion is important to avoid over-dimensioning the valve, which could result in unstable operation of the system or under-dimensioning, to avoid a significant pressure drop and rapid damage to the valve.