The ZZYVP self-actuated nitrogen seal valve is composed of components such as the regulating valve body assembly, actuator, pressure preset spring, pilot, pressure tapping pipe and so on. It is an energy-saving product that doesn’t require additional energy sources and uses the pressure of the regulated medium itself as the power source to automatically regulate and maintain a constant pressure. This regulating valve has a very high control accuracy and is mainly used to keep the pressure of the protective gas (such as nitrogen) on the top of the container constant, so as to prevent the materials in the container from directly contacting with the air, avoid the volatilization and oxidation of the materials and ensure the safety of the container. It is especially suitable for the gas seal protection systems of various large storage tanks. This product features energy saving, sensitive operation, reliable running, and convenient operation and maintenance.

There are the most types of self-operated pressure regulating valves, including the following types:
●ZPL610 (ZZYP, ZZYM) self-operated pressure regulating valve
●ZPL620 (ZZVP, ZZVM) self-operated micro-pressure regulating valve
●ZPL630 (ZZYVP-BII) pilot pressure regulating valve (nitrogen sealing device)
●ZFQ explosion-proof fire-blocking breathing valve