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Widely Used Does Not Require External Energy Self Operated Pressure Regulating Valve Which Used in Situations without Electricity Or Gas From China
Product Description
The ZZY series direct acting self operated pressure regulating valve (referred to as pressure regulating valve) produced by our company is a type of actuator that uses the pressure changes of the controlled medium itself to drive the actuator without the need for external energy, achieving automatic regulation and stable pressure.
Can work in situations without electricity or gas. It can be widely used in the automatic control of gas, liquid and steam medium pressure reduction and stabilization (for post valve regulation) or pressure relief and stabilization (for pre valve regulation) in various industrial equipment such as petroleum, chemical industry, electric power, metallurgy, food, textile, machinery manufacturing and residential buildings.
Equipped with a condenser, it can operate continuously under steam at 350 ℃.
Specification parameters
| Nominal Diameter | DN15~DN350 |
| nominal pressure | PN1.0~PN10.0 Class150~Class600 |
| Working temperature range | -40℃~425℃ |
| Connection method | Flange style |
| body material | WCB CF8 CF8M CF3M |
| Material of valve internals | 304 304+STL 316 316+STL 316L 316L+STL 304+PTFE |
| Traffic characteristics | Quick open |
| adjusting accuracy | 10% |
| pressure adjustment range | 30KPa~60000KPa segmented control |
| Leakage level | Hard seal level IV, V, soft seal level VI (standard ANSI B16.104) |
Product Characteristics
The characteristic of self-reliance is that it does not require external energy and can work in situations without electricity or gas, which is both convenient and cost-effective;
The selection and setting of pressure set points are convenient, and can be continuously set without interference during operation, without maintenance;
The pressure regulating valve is designed with a pressure compensation device to cancel out various unbalanced forces inside the valve, ensuring that the valve core maintains dynamic balance during operation, completely eliminating the impact of pressure fluctuations on the accuracy of the set point, and achieving more stable regulation;
There are three types of actuators available: membrane type, piston type, and metal bellows type, which can be used for various working conditions; The membrane actuator is suitable for situations where the set pressure is ≤ 0.6MPa, and its action is sensitive; Piston type actuators are suitable for medium and high pressure applications with a set pressure greater than 0.5MPa; Metal bellows actuator is suitable for situations where rubber cannot be used
