Precision - scaled Pressure - regulating Valve, High - pressure - regulated Pipeline for Nitrogen Copper - made Pressure - reducing Valve YQD - 30

Product Details

Product Description

Product Description
Precision - scaled Pressure - regulating Valve, High - pressure - regulated Pipeline for Nitrogen Copper - made Pressure - reducing Valve YQD - 30
Model: YQD - 30 Nitrogen Pressure - reducing Valve
Measurement Range: 0.01 - 0.1 (MPa)
Applicable Medium: Nitrogen
Input Pressure (MAP): 15
Rated Outlet Pressure: 0.01 - 0.1 (MPa)
Rated Flow: 60 (m³/h)
Purpose: Nitrogen Pressure - reducing Valve
Structure: Two - stage type
Working Principle: Positive - acting type
Ambient Temperature: 60 (℃)
Packing Quantity: 3
Inlet Connection Thread: G5/8
Outlet Connection Thread: G3/4
Name: Nitrogen pipeline pressure reducer.
Material: Copper-made nitrogen pressure reducer.
Model: YQD-30.
Net weight: 7KG.
Characteristics: Reduce the high-pressure gas in the nitrogen pipeline for use. The pressure reducer can maintain a stable output pressure under working conditions where the input pressure and outlet flow change. It is especially suitable for occasions with high requirements for pressure stabilization accuracy or long-term continuous operation. This ensures its stability and reliability under various working conditions. Due to its stability and reliability, the YQD-30 ammonia pressure reducer is widely used in various gas medium pipelines, such as nondestructive testing, environmental detection, electrical instruments, automated instruments and other fields, ensuring the safety and efficiency of the system.
What are the differences between a two-stage pressure reducing valve and a single-stage pressure reducing valve?
1. **Degree of structural complexity**
- **Single-stage pressure reducing valve**: The structure is relatively simple. It mainly consists of a pressure reduction unit and regulates pressure through a valve. For example, in some simple household gas pressure reducing valves, the internal structure mainly consists of an elastic element (such as a spring) and a valve core. When the inlet pressure changes, the expansion and contraction of the spring directly adjusts the opening degree of the valve core to control the outlet pressure.
- **Two-stage pressure reducing valve**: The structure is more complex. It has two series-connected pressure reduction units. It's like a relay process. The first stage first reduces the higher inlet pressure to an intermediate pressure, and then the second stage further reduces this intermediate pressure to the required outlet pressure. This structure makes the internal parts of the two-stage pressure reducing valve more numerous and the overall structure more complex.
2. **Pressure regulation accuracy**
- **Single-stage pressure reducing valve**: The pressure regulation accuracy is relatively low. Because it reduces the inlet pressure to the outlet pressure at one time, it is greatly affected by fluctuations in the inlet pressure. For example, when the inlet pressure suddenly rises, the valve core of the single-stage pressure reducing valve may not be able to precisely regulate the outlet pressure due to the instantaneous pressure impact, resulting in a large fluctuation in the outlet pressure.
- **Two-stage pressure reducing valve**: It has a higher pressure regulation accuracy. Due to two stages of pressure reduction, each stage can perform finer pressure regulation. The first stage of pressure reduction can buffer fluctuations in the inlet pressure, and the second stage can fine-tune based on the relatively stable intermediate pressure, so it can control the outlet pressure more accurately. For example, in some laboratory gas supply systems with high requirements for pressure accuracy, the two-stage pressure reducing valve can stabilize the pressure of gases such as nitrogen within a very small fluctuation range.
3. **Applicable pressure range**
- **Single-stage pressure reducing valve**: Generally applicable to situations where the difference between the inlet pressure and the outlet pressure is not particularly large. For example, in some low-pressure civil water supply systems, the difference between the water supply pressure and the pressure required by water-using equipment is relatively small. A single-stage pressure reducing valve can meet the requirements. It can reduce the slightly higher pressure of municipal water supply to a pressure suitable for use by equipment such as household faucets.
- **Two-stage pressure reducing valve**: Applicable to occasions where the difference between the inlet pressure and the outlet pressure is large. In industrial production, when some high-pressure gas storage tanks (with pressures up to several tens of MPa) supply gas to using equipment (which may only require a pressure of several MPa), the two-stage pressure reducing valve can better handle this large pressure difference and safely and effectively reduce the high-pressure gas to a suitable operating pressure.
4. **Stability**
- **Single-stage pressure reducing valve**: The stability is relatively poor. Because it is more sensitive to changes in the inlet pressure, when there are frequent or large fluctuations in the inlet pressure, the outlet pressure is also prone to fluctuations. For example, in some simple compressed air systems, if the output pressure of the compressor is unstable, it is difficult for a single-stage pressure reducing valve to maintain the stability of the outlet air pressure.
- **Two-stage pressure reducing valve**: It has better stability. Its two-stage pressure reduction structure gives it better buffering and regulating ability in the face of fluctuations in inlet pressure. The first stage can initially process the fluctuating pressure, and the second stage can further stabilize the pressure, so it can provide a more stable outlet pressure in a complex pressure-changing environment. In some experimental environments or industrial production processes with extremely high requirements for gas pressure stability, this stability advantage of the two-stage pressure reducing valve is very obvious.

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