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  • ZLF selfforce balance valve

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ZLF selfforce balance valve

ZLF selfforce balance valve

  • Model:ZLF-10/ZLF-16/ZLF-10Q/ZLF-16Q/ZLF-25Q/ZLF-10P/ZLF-16P/ZLF-25P
  • Specification:DN15-DN350
  • Temperature:≤80℃
  • Medium:Water and similar media
  • Pressure:PN10~PN25
  • Connection method:flange
  • Driving method:Automatic
  • Material:Cast Iron, Ductile Iron, Stainless Steel
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ZLF selfforce balance valveOverview

The ZLF selfforce balance valve is an automatic control valve that operates based on inherent system pressure variations, specifically designed for closed-loop piping systems in HVAC water systems and centralized heating. Equipped with integrated pressure sensing and feedback mechanisms, it dynamically adjusts valve opening in real-time according to pressure differentials or flow rate changes in the controlled loop, thereby maintaining hydraulic parameters (e.g., flow rate or pressure differential) at preset values. Its core function is to dynamically absorb and eliminate excess pressure head in the pipeline network, effectively resolving hydraulic imbalance caused by pressure fluctuations or load variations. This ensures precise flow distribution to terminal devices as needed, making it a critical self-control device for enhancing system stability and energy efficiency.

ZLF selfforce balance valve Product Diagram
ZLF selfforce balance valveCharacteristic

1. Self-powered without external energy: The valve operates entirely on the pressure differential of the controlled system's medium, eliminating the need for external power, gas, or complex control circuits. This achieves energy-free automated operation with high system reliability and low initial investment and maintenance costs.

2. Precise preset and automatic pressure stabilization: Set and lock the target control value (flow rate or pressure differential) precisely using the adjustment handwheel on the valve top or a dedicated tool. Once set, the valve automatically maintains this parameter within the preset operating range, ensuring rapid response and high accuracy.

3. Extensive operational scope and excellent adaptability: The valve design features a wide adjustable ratio and suitable pressure differential range, capable of meeting dynamic variation requirements under different seasons and operating conditions, ensuring effective performance under all circumstances.

4. Integrated measurement and shut-off function: Most valve models feature standard measurement connectors on the valve body, enabling seamless connection with smart instruments for non-intrusive parameter monitoring, thereby simplifying debugging and diagnostics. Additionally, the valves provide reliable shut-off sealing performance, making them suitable as isolation valves in their respective circuits.

5. Energy efficiency and simplified commissioning: By automatically limiting and stabilizing flow or pressure differentials in each loop, the system significantly reduces the pump's ineffective head and overall energy consumption. Its "post-set automatic operation" feature also greatly reduces the workload for initial system adjustment and subsequent maintenance.

ZLF selfforce balance valvestructure principle

ZLF selfforce balance valve Structure Diagram

List of Component Names and Materials

namematerial
body、bonnetCast Iron, Ductile Iron, Stainless Steel
stemstainless steel
disccast copper
diaphragmacrylonitrile-butadiene rubber


ZLF selfforce balance valvetechnology parameter

Performance Specification Sheet


Performance Specification Sheet
Nominal Pressure1.01.62.5MPa
Strength test pressure1.52.43.8
Sealing test pressure1.11.762.8
Applicable Temperature≤80



ZLF selfforce balance valvestandard size

Standard requirements for external dimensions

1. The structural length of the valve shall comply with the standard of GB/T12221

2. Connecting flanges according to GB/T17241.6 standard

ZLF selfforce balance valve Outline Diagram

Outline dimension table

DN(㎜)LHH1Flow control range ㎡/h
1511072700.1~1
2011072700.1~1.5
2511581740.2~2
32160108910.5~4
402001381471~6
502151381472~10
652301431543~15
802751701895~25
10029019321110~35
12531020822715~50
15035025426030~80
20043028930340~180
250520325367100~300
300635357430150~1500
350670372495200~7000