A support plate is a critical component in valve construction that helps to provide structural support and stability. It is typically positioned between the valve body and the flange, and is designed to prevent distortion or deformation of the valve body under the pressure and forces experienced during operation.

The support plate is usually made of a strong and durable material such as stainless steel or carbon steel, and is often coated or plated to provide additional protection against corrosion and other types of damage. It is also designed with precise dimensions and tolerances to ensure a tight and secure fit with the valve body and flange.

In addition to providing support and stability to the valve body, the support plate can also help to distribute the forces and stresses evenly across the valve assembly, which can help to prolong its service life and prevent premature failure or damage.

Overall, the support plate is an essential component in valve construction, and plays a critical role in ensuring the safe and reliable operation of industrial processes and systems. Proper selection and installation of the support plate can help to improve the performance, efficiency, and longevity of valves and other types of equipment.