The significance of premium quality of valve seat inserts cannot be neglected because failure can be inefficient, costly, and time-taking affair. There are certain reasons behind the failure of valve seats; we will talk about them in this post-
Manufacturers have a wide range of plastic materials to make valve seats. But if any of the experts chooses the wrong material for the application, it may result in failure. Distinct applications and their functions make different requirements for the valve seat material. Before making a selection for the material, you should understand the properties of available materials to ensure suitability for a specific application.
Wrong design selection
The valve seat is the key component used in every valve. And if it fails to perform, the valve will also fail to perform. Consequences can range from shortened life span or minimal leakage to catastrophic failure. Depending on the media and environment, such consequences can result in explosion and other life-threatening mishaps.
Valves with soft seats use an outer metallic seat carrier with the valve seat insert moulded inside it. Right design brings a lot of benefits, but if you get the design wrong, you may spend your whole time in finding the reason behind failure of your seats. It is true that wrong design of the seat carrier can lead to valve seat failure.
Unknown reasons behind the behavior of material while operating at temperature and pressure
When you choose the correct material and design for your valve seats, you must consider the pressure and temperature range of the application. High and low temperatures and pressures and combinations of both will put impact on longevity, functionality, and durability of the valve and valve seats. Your valve seats can fail to perform if you ignore these critical factors.
PTFE is the most common material used for valve seats. It has many advantages but there is a downside as well. The cold flow resistance is absent in PTFE, which affects the performance of the valve and lead to failure. You can fix it by selecting right seat design and selection of a filled grade of PTFE, which is less prone to cold flow.
For more tips and guidelines, you can contact valve seat inserts suppliers.