The concept of various pressures for spring-loaded safety valves: Opening pressure: also called setting pressure, is the medium pressure when the safety valve flap starts to rise under operating conditions. Discharge pressure: The pressure on the inlet side when the valve flap reaches the specified opening height. Respiratory pressure: After the safety valve is discharged, the valve flap re-presses the valve seat and the inlet pressure when the medium stops discharging. The return pressure is an important parameter to characterize the quality of the safety valve. It is generally required to be at least 80% of the working pressure. The upper limit is not suitable for frequent flapping. Panini Press Grill,Panini Grill,Industrial Panini Grill,Sandwich Press Panini Grill Guangzhou New Power Catering Equipment Manufacturing Co.,Ltd , https://www.gznewpower.com
The nominal pressure of the spring-type safety valve indicates the high allowable pressure of the safety valve at normal temperature. The safety valve for high-temperature equipment should not consider the reduction of the allowable stress of the material at high temperatures. The safety valve is designed and manufactured according to the nominal pressure standard.