ZZY/ZZC/ZZVThe series of self operated pressure regulating valves are actuator products that do not require external energy and use the energy of the regulated medium to achieve automatic regulation. At the same time, it has the advantages of energy conservation, adjustable pressure setting during operation, fast opening flow characteristics, sensitive action, good sealing performance, stable medium pressure, high adjustment accuracy, and small leakage. It is widely used for automatic control of pressure reduction and stabilization of gas, liquid and steam media (used for post valve regulation) or pressure relief and stabilization (used for pre valve regulation) in various industrial equipment such as petroleum, chemical industry, electric power, metallurgy, food, light textile, machinery manufacturing and residential buildings. It can also be used for controlling the mixed flow rate of two combustion gases in industrial furnace combustion systems, or for sealing oil systems of hydrogen cooled generators, fuel gases in various industrial furnace combustion systems, automatic micro pressure adjustment of protective gases for petroleum products or oil storage tanks, and heat treatment protective gases.
This series of products includesZZYStandard type (self operated pressure regulating valve)ZZYP-16B IIType (with commander operated self operated pressure regulating valve)ZZCType (self operated differential pressure regulating valve)ZZVType (Self Reliance Micro Pressure)-Various types such as nitrogen sealed regulating valves. The nominal pressure rating of the product includesPN（MPa）1.6、4.0、6.4、10.0Valve body diameter rangeDN（mm）15～300There are standards for leakage volumeⅣLevel andVGrade; The traffic characteristic is fast opening. Multiple varieties and specifications are available for selection.

Name and model of regulating valve
Nominal pressure (MPa)
Nominal diameter (mm)
Rated flow coefficient (Kv)
Inherent flow characteristics
Media name
Working temperature and range
Operation mode of the whole machine
Pressure set point and adjustment range
Valve body, valve internals, and packing materials
Attached attachments
Other special requirements