Sanitary check valves are primarily used to prevent backflow of fluids. These valves only allow flow in one direction. In fact, they are one of the few valves to be automated to open and close without help. Unlike other types of valves, check valves continue to operate even after the plant has lost air, electricity, or manual control of the operating crew. They are widely used in a number of processes in the health industries. Check valves are everywhere. You could have a check valve in your house, but you do not know.
For example, sanitary check valves with butt welded ends are used in piping installation to prevent reverse flow of fluids. For this reason, they are also known as non-return valves. The valves can be used in the pharmaceutical, chemical, beverage and food industries. This is because they were built with easy-to-clean materials and allow for fluid flow from one end to the other. They can be used on pumps, cooling towers, pressure pumps, nitrogen purge line, sump pumps and many others. The valves make it easy to maintain a high level of hygiene thanks to its corrosion-resistant material. When the pressure under the valve gate exceeds that of the valve plug and the spring force, the valve opens and the fluid can flow in one direction.
The valve has been designed with stainless steel material to prevent contamination from corrosion and rust. It has also been built with a smooth surface to allow a fluid flow of fluids. This feature is particularly important in industries that use highly viscous fluids. The valve itself is self-draining. The lower valve has been designed to flush fluids that can get stuck in the valve. The stainless steel material is also hard enough to withstand high pressure, temperature and volume. Seats and seals are also made of FDA approved materials.