Sanitary pressure valves are safety valves used for ensuring pressure stability at inlet and outlet systems points under different operating conditions. These sanitary valves used in tanks, heat exchangers, and separator equipment. Their use in sanitary operations is meant to keep systems at constant pressure regardless of the fluctuating operating conditions that characterize the cosmetic, personal care, food beverage, and biopharmaceutical industries.
Reasons for Using Constant Pressure Valve
Constant pressure valves are used to maintain a system’s operations in different conditions. This eliminates the risks of breakdown or delay in functionality because of a shift in environmental settings. Also, these valves are used as pressure relief valves to guarantee dependable and safe performance. This applies when these valves are opened to release excess pressure buildup from the system, as well as to prevent pipe bursts, operation breakdowns, and injuries. Because these valves do not have sensing and control features present in other modulating control valves, they tend to be cheaper. Constant pressure valves depend only on the compressed air supply when adjusting the system pressure.
Kinds of Constant Sanitary Pressure Valves
Below are the two kinds of constant pressure valves:
- V-type inlet valve. This valve often features a stainless steel body with some types of opening and closing mechanism. This mechanism makes sure the medium remains a pre-set even if there are external fluctuations.
- A-type outlet valve. This type of pressure valves is used to ensure the stability of the outlet pressure. It is often used in front of bottle filling machines.
How the Constant Pressure Valves Function
Constant pressure valves are automatically and remotely controlled by some compressed air. The piling system just features an air pressure regulator and pressure gauges as sensors without requiring other transmission mechanisms. To make the valve respond to any medium pressure changes, diaphragms and plungers are used. It is done by adjusting the valve plug or maintaining the plug in position to keep up the pre-set pressure value.
In a V-type valve, the inlet pressure is kept constant. This ensures the valve opens when the systems’ pressure exceeds some pre-set level. A sufficient decrease in the medium pressure will allow the valve to automatically close. In an A-type valve, the outlet pressure is maintained. This valve is designed to close if the product’s pressure begins to rise above the specified level for the outlet. Also, the valve opens when it begins to fall below the specified level.