Summary:
ZZYP self-operated pressure control valve is mainly composed of control valve, actuator and a set pressure spring. It is suitable for non-corrosive liquids, gases and steam. The pressure before (when the pressure in front of the valve is increased, the control valve opens) or after (when the pressure in the valve is increased, the control valve opens) the pressure is controlled in the system piping. It is widely used in petroleum, chemical industry, electric power, metallurgy, medicine, food, textile, machinery, hvac. The action form has the pressure adjustment after reducing pressure with the valve (type B) and the pressure adjustment before reducing pressure with the valve (type K).

Features:
Compared with manual control valve, self-operated pressure control valve has the advantage of being able to adjust automatically. Relative to the electric control valver, it has the advantage of no external power. Self-operated valve relies on the pressure and temperature flowing through the valve medium itself as energy to drive the valve to work automatically, and it do not need power supply and secondary instruments.

Function:
Self-operated valves are used at the output end of the valve feedback signal (pressure, pressure difference, temperature) through the signal pipe to the actuator drive valve disc to change the opening of the valve, to adjust the pressure, flow, temperature purposes. In closed water circulation system (such as hot water heating system, air conditioning chilled water system), the correct use of this valve can be very convenient to achieve the flow distribution of the system; The dynamic balance of the system can be realized. Can greatly simplify the debugging of the system; Can stabilize the working state of the pump.

Key words

Control valve

Self-Operated Nitrogen Sealed Control Valve (ZZDP)

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