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Large valve capacity, easy disassembly and assembly, dual guide structure, multi spring actuator, N series pneumatic double seat regulating valve from China
Product Description
The N series new pneumatic thin film double seat regulating valve developed and produced by our company adopts a dual guide structure and is equipped with a multi spring actuator. It has the advantages of compact structure, light weight, sensitive action, large valve capacity, precise flow characteristics, and easy disassembly and assembly. Widely used for precise control of gas, liquid, steam and other media, process parameters such as pressure, flow rate, temperature, and liquid level are maintained at given values. Especially suitable for media with large pressure differences and a large allowable leakage rate that are not very clean. Widely used in the automation regulation and remote control of industrial production processes such as chemical, petroleum, metallurgy, power plants, textile, papermaking, and pharmaceuticals.
Specification parameters
| Nominal diameter | DN50~DN400 |
| Nominal pressure | PN1.0~PN10.0 Class150~Class600 |
| Working temperature range | -196℃~565℃ |
| Connection method | Flange style Welded type |
| Body material | WCB CF8 CF8M CF3M TA C-276 2205 |
| Material of valve internals | 304 304+STL 316 316+STL 316L 316L+STL 17-4PH C-276 |
| Valve cover form | Standard ，Heat dissipation type, Elongate type，Bellows sealed type, Bellows sealed heat dissipation type |
| Traffic characteristics | Equal percentage line |
| Leakage level | Hard seal level IV, soft seal level VI (standard ANSI B16.104) |
| Diaphragm actuator | PZM200 PZM280 PZM400 PZM600 PZM1000 PZM1600 |
| Spring range and gas source | 40-200KPa (gas source 0.25MPa) 80-240KPa (gas source 0.3MPa) |
| Input signal | 4-20mA.DC |
Product Features
1. Adopting a top bottom dual guiding structure improves the stability of the entire valve system;
2. The unbalanced force received is small; Due to the characteristics of the valve, the hydrostatic pressure simultaneously acts on the dual valve core, causing them to cancel each other out. Therefore, the unbalanced force is small, allowing the pressure difference to increase. Reduced the thrust required by the actuator.
3. High circulation capacity; Compared with other control valves of the same caliber, double seat valves can flow more fluid, and the flow capacity of double seat valves of the same caliber is about 20-50% greater than that of single seat valves.
