stainless steel electric valve
The PHF-DDY series dynamic pressure balance electric regulating valve is designed to improve the flow control and regulation performance of fan coil units, cold ceilings and other HVAC equipment terminal units in the HVAC system. With its precise flow regulation capability and stable pressure balance characteristics, this series of regulating valves provides reliable guarantee for the optimized operation of the HVAC system, thereby ensuring the comfort of the indoor climate and the optimization of energy efficiency.
- Specifications: DN20-DN50
- Working temperature: 5-95℃
- Pressure rating: PN16
- Working medium: air conditioning hot and cold water, ≤50% ethylene glycol solution
- Connection method: threaded connection
- Connection standard: GB/T 7307
- Flow characteristics: equal percentage characteristic curve
- Leakage rate: ≤0.01%KVS
- Flow adjustment: 20%, 40%, 60%, 80%, 100% five gears
- Pressure difference range: 0.03-0.3MPa
- With pressure measuring position and temperature measuring hole
Technical Parameters
| Ordering model | Product model | Valve type | DN diameter | Connection thread | Kv value | Dimensions | |
| L | H | ||||||
| 14139 | PHF-DDY-X40L | 2 port | 40 | G1-1/2 | 14 | 140 | 265 |
| 14140 | PHF-DDY-X50L | 2 port | 50 | G2 | 14 | 140 | 290 |
| Note: The above table is the commonly used recommended models, please consult for details. | |||||||
Installation Instructions
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This valve is compatible with Siemens actuators.
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The valve stem moves downwards in the direction of valve closing.
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Before installing the valve, the pipeline should be clean and free of scale, metal flakes and other debris left during welding.
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The pipeline must be concentric when connected to the valve body and not subject to vibration. The water flow direction should be consistent with that marked on the valve body.
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When the actuator is installed vertically on the valve body, avoid installing the actuator under the valve and leave enough space for daily maintenance (such as disassembling the actuator).
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When maintaining the valve, the power supply must be cut off or isolated, and the water system should not be under pressure.
FAQ
Q: What are the key advantages of using it in automated systems?
A: It offers excellent durability and resistance to corrosion, making it ideal for systems exposed to harsh environments. The electric actuator provides precise control over the flow of fluids or gases, allowing for seamless integration into automated control systems, improving system efficiency and reducing manual intervention.
Q: How does it perform in high-pressure or high-temperature applications?
A: It is designed to withstand high-pressure and high-temperature environments due to the strength and resilience of stainless steel. This makes it suitable for industries like oil and gas, chemical processing, and water treatment, where reliable, high-performance valves are essential for maintaining safe and efficient operations.
Q: What should purchasers consider when selecting it for a specific application?
A: When selecting it, purchasers should consider the valve size, pressure rating, flow capacity, and temperature range to ensure it matches the specific needs of their system. Additionally, the type of electric actuator, voltage requirements, and compatibility with existing control systems should be taken into account for optimal performance.
Q: Is it customizable for specific system requirements or applications?
A: Yes, it can be customized in terms of size, actuator type, and voltage specifications to meet specific application needs. Custom options may also include special seals, end connections, or additional features like position sensors to ensure the valve meets the operational requirements of unique systems.
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