The main advantage of this automatic flow control balancing valve is that it automatically responds to system pressure changes and maintains a constant flow rate without the need for external power and manual adjustment. This not only simplifies the system commissioning process, but also significantly improves operating efficiency and avoids energy waste caused by uneven flow distribution.
The automatic flow control balancing valve has a compact structural design and is easy to install. It can be flexibly used under different pressure and flow requirements. It is widely used in air conditioning systems, district heating and industrial cooling systems in large and medium-sized buildings.
Automatic Flow Control Balancing Valve|Product Features
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P/T measuring ports are available.
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The valve characteristics are not affected by the flow setting size.
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It is composed of an adjustable flow dynamic balancing valve, a dynamic pressure difference balancing valve and a regulating valve with full stroke adjustment capability, integrating three valves in one. (PICV)
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It can achieve 100% adjustment and balance of water volume in the system, while creating a more comfortable environment and energy-saving effect. When the system is rebuilt again, it does not need to be hydraulically balanced again.

| Order code | Product model | Specification | Diameter | Connection thread | Dimensions | Kv value | Stroke | Recommended adapter driver | ||
| L | H | H1 | ||||||||
| 14136 | PHF-DDY-20L | 2 way | DN20 | G3/4 | 85 | 178 | 192 | 2 | 3 | DRQ-1K |
| 14137 | PHF-DDY-25L | 2 way | DN25 | G1 | 85 | 195 | 203 | 2 | 3 | DRQ-1K |
| 14138 | PHF-DDY-32L | 2 way | DN32 | G1-1/4 | 120 | 226 | 245 | 4 | 6 | DFQ-JL |
| 14139 | PHF-DDY-X40L | 2 way | DN40 | G1-1/2 | 140 | 265 | 240 | 14 | 20 | DFQ-S1000X |
| 14140 | PHF-DDY-X50L | 2 way | DN50 | G2 | 140 | 290 | 250 | 14 | 20 | DFQ-S1000X |
Product advantages
Intelligent control: It realizes automatic flow adjustment without complex external control system and has strong adaptability.
Energy saving and environmental protection: It improves the overall efficiency of the system, reduces energy waste, and is suitable for the renovation and new construction of energy-saving buildings.
Long-term stability: The control ability of constant flow effectively ensures the long-term stable operation of the system and reduces the frequency of maintenance and replacement.
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