Sanitary pressure relief valves are designed to regulate plumbing system and pump pressure. It is meant to prevent dangers and operation breakdown. These sanitary valves are automatically available for pressure buildups that result from system upset, equipment failure, or malfunctioning, and pressure buildups because of daily system routines.
Because of the stainless design and other hygienic and safety features of sanitary pressure relief valves, they are suitable to operate equipment utilized in high-pressure food processing, personal care, chemical, and biopharmaceutical industries.
How These Valves Operate
Pressure relief valves open when pressure buildup inside the system goes beyond the specified level. If they open, the fluid, moisture, liquid, or steam is released, lowering the internal pressure to an average level.
The most common design of this type of sanitation valve is the spring-loaded valve. This valve features the valve body, spring, nozzle/inlet, pipes, disk, seat, and disk holder. Under normal conditions, the spring load maintains the disk on the nozzle and prevents outflow. But, if the inlet pressure exceeds the spring force, the spring lets go of the dish, allowing outflow. The pressure can be set based on what the spring can hold.
The majority of pressure relief valves are made to automatically open if the pressure gets high and close when the pressure returns to an average level. Closing helps in blocking flow to prevent the pressure from dropping below the average level.
Can Pressure Relief Valves Fail?
Pressure relief valves are dependable tools; however, rare instances show that they can fail. These happen when the valve does not open when required or not required. But, despite this rare possibility, the valves can prevent damages and equipment breakdowns. They are used in high-pressure systems and available in various configurations.
Other Valve Designs
Aside from spring-loaded pressure relief valves, there are other designs available. Some pressure relief valves are designed to pop open if the static inlet pressure builds up during high-steam operations. Others gradually lift open in proportion to the way the pressure builds up over the system opening pressure. There are also valves actuated by temperature buildup in the systems inside or outside. Power-actuated relief valves get power from an external energy source.
The majority of pressure relief valves are spring-loaded and enable calibration to set the pressure at which they open or close. These valves are easy to operate and maintain which make them the ideal options for sanitary applications.