ZZYM ZZYM-16 ZZYM-40 Self-actuated control valve

ZZYM ZZYM-16 ZZYM-40 Self-actuated control valve

Overview of  ZZYM ZZYM-16 ZZYM-40 Self-actuated control valve

ZZYM ZZYM-16 ZZYM-40 Self-actuated control valve is a kind of self regulating valve that uses the energy of the controlled medium as the power source and is introduced into the executive membrane chamber to generate thrust without external energy, so as to control the movement of throttling element to achieve automatic regulation. It has the comprehensive functions of measurement, execution and control. Self operated pressure regulating valve is a kind of self operated regulating valve. Because it does not need other external energy sources, such as power supply and gas source, it is driven only by the energy of the medium itself, which is energy-saving, environmental protection and convenient to use. After installation, it can be put into automatic operation after setting the pressure value. Therefore, in the case of low control accuracy and lack of power supply and gas source, Has been more and more widely used. It is widely used in the automatic control of deceleration pressure, pressure stabilization (for pressure regulation behind the valve) pressure relief and pressure stabilization (for pressure regulation in front of the valve) of various equipment gas, liquid and steam media in the automatic control system of petroleum, chemical industry, power station, light industry and printing and dyeing industry. According to the different working conditions of users, different valve core structure types and different actuators can be selected to achieve the control effect.

Structural principle of ZZYM ZZYM-16 ZZYM-40 Self-actuated control valve

The front valve core of the automatic pressure valve is closed. When the pressure P1 in front of the valve changes into the pressure P2 behind the valve after throttling through the valve core and valve seat, at the same time, P1 is input into the upper membrane chamber through the pipeline and acts on the membrane. The valve core position when its force is balanced with the reaction force of the spring determines the opening of the valve, so as to control the pressure in front of the valve. When the pressure P1 in front of the valve increases, the effect of P1 on the diaphragm also increases at any time. At this time, the force on the diaphragm is greater than the reaction force of the set spring, causing the valve core to move away from the valve seat, resulting in the larger opening of the valve and the smaller flow resistance. P1 releases the pressure behind the valve until the force on the diaphragm is balanced with the reaction force of the spring, so as to reduce P1 to the set value. Similarly, when the pressure P1 in front of the valve decreases, the action direction is opposite to the above, which is the working principle of pressure regulation in front of the valve.

Features of ZZYM ZZYM-16 ZZYM-40 Self-actuated control valve

The energy-saving automatic control system without additional driving energy has low equipment cost and is suitable for explosive environment; Simple structure and small maintenance workload; The set point is adjustable and the range is wide, which is convenient for the user to continuously adjust within the set range; Diaphragm actuator has higher detection accuracy and sensitive action than cylinder mechanism; The pressure balance mechanism is adopted in the valve to make the regulating valve sensitive, accurate control and large allowable differential pressure.

Main tech of  ZZYM ZZYM-16 ZZYM-40 Self-actuated control valve

Structure: Globe, caged, self actuated

Size: DN20~DN200

Rating: PN16~PN64

Body: WCB, CF8, CF8M

Trim: 304SS, 316SS, 316L

Actuator: Pneumatic diaphragm, cylinder

Note: Any special design or question of ZZYM ZZYM-16 ZZYM-40 Self-actuated control valve， kindly contact the manufacturer for more details.