Que sont les vannes ?
This article will help you provide a good understanding of How to choose valve material. Different types of valves include gate, globe, butterfly, plug, check, diaphragm, control, pinch valves etc. each type of valve has model numbers with different functional capabilities and features. Some of the valves are self-operated or they are operated with hydraulic, pneumatic or actuator. Engineers must know flow media, flow velocity and the intended purpose when selecting valves that are used in high pressure circuits.
Comment choisir le matériau d'une vanne
Proper design needs lots of thought. It is especially when it comes to specifying the components. These components make these types of valve systems. Valves selection is very critical and it is a key aspect of that selection process. It is the understanding of how the materials used in the valve are considered. It has a long range impact on valves and its overall system performance.
1. Establishing the parameters
When engineers select the valves used in a high pressure circuit it requires functions of those valves that match the choices. Flow media, velocity, pressure and the specific kind of valves are the key parameters. It will help to direct the engineers towards the right material to the valves. Beyond all these parameters the engineers today are also turning their attention to the valve materials.
2. Materials that play nicely
Understanding the materials’ incompatibilities are crucial. These are for those parts of the valves that come into direct contact with the media flow.
3. Type et taille de vanne
Choosing the right valve type and every valve needs to perform more than one or more functions such as: Shut flow, mix flow, divert flow, pressure relief, and adjust flow and backflow prevention
4. Matériaux de construction
Knowing the comp ability of chemical requirements. The valve materials are needed to be compatible with liquids or gasses that are flowing through it. Plastic valves resist with the corrosive and harsh chemicals that are better than metal valves. Common materials that are used for valve making includes ductile iron, bronze and brass, Monel, Inconel and stainless steel.
5. Performance
Déterminer les exigences de température et de pression. Il faut connaître les plages de pression et de température lorsque la vanne est installée. Les vannes en métal sont les meilleures car elles supportent des températures plus élevées que les plastiques. Elles sont également idéales pour les gaz sous pression et sont donc plus robustes.
6. Maintenance
Assurez-vous de prendre en compte la maintenance. Le choix des vannes doit inclure et accorder une attention particulière aux exigences de maintenance. Ceci est très important pour la stabilité de l'application et la fiabilité de la vanne.
Challenge in choosing valve material
The challenge in making the material choice is very important because the chosen material fits the application. Very important thing to be concerned about the working condition is to know that the temperature and pressure ratings for the working media is to check erosion and corrosion properties. Engineers that are assigned to choose valve material should be always familiar with the ASME B16.34 standard requirements. ASME codes are accepted worldwide.
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