Qinhuangdao Diya Mechanical Technology Development Co., Ltd. sells Leser valves. Leser LESER safety valves, established in 1818, is Europe's leading safety valve manufacturer, providing top-tier safety valves and services. The product range includes a full series of high-quality safety valves such as API type, compact type, high-performance type, clean type, lined type, regulating type, pilot-operated type, and more. There are two types of safety valves: spring-loaded safety valves and pilot-operated safety valves. In spring-loaded safety valves, the closing force is generated by a helical spring. The set pressure is adjusted by pre-tensioning the spring adjustment bolt. When the pressure exceeds the set pressure, the safety valve opens accordingly.

Pilot-operated safety valves (POSV) utilize system pressure to generate the closing force. The area acting in the closing direction, which we refer to as the dome, is larger than the seat area of the main valve of the pilot valve. Since the surface area of the dome is greater than that of the valve seat, the corresponding closing force is also greater. If the pilot valve reacts, the pressure in the dome is released, and the main valve of the pilot-operated safety valve opens. The function of a safety valve is to open when the system is overpressurized and to reclose when the pressure returns to normal, minimizing medium loss. Leser LESER safety valves are widely used in industries such as chemicals, petrochemicals, industrial gases, oil and gas production, equipment manufacturing, food and pharmaceuticals, and more. With reasonable prices, guaranteed delivery times, year-round supply, and professional service levels, we make your work easy and efficient! Customers are welcome to contact us by phone or letter. Our company is dedicated to serving you.