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Tianjin Yibiao valve manufacturing Co., Ltd.

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Customer Service Hotline +86-138-2033-8668

YX741X Adjustable Pressure Reducing and Stabilizing Valve

The YX741X Adjustable Pressure Reducing and Stabilizing Valve consists of a main valve, needle-type regulating valve, pilot valve, ball valve, and piping system. The main valve body features a full-bore, straight-through, streamlined design and employs either diaphragm or piston construction. The adjustable pressure reducing and stabilizing valve sets the outlet pressure by adjusting the spring pressure of the pilot valve and the opening of the needle valve. It stabilizes the outlet pressure through the feedback action of the piping system and the control chamber.
The adjustable pressure reducing and stabilizing valve employs self-operated hydraulic control via the needle valve and pilot valve, eliminating the need for additional devices or energy sources. It offers simplified maintenance, minimal sensitivity to inlet pressure and flow variations, high pressure control accuracy, and reliable pressure reduction and stabilization.

Parameters

Specifications: DN40-DN800

Material: QT450

Brand: Tianjin Yibiao

Model: YBFM

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Product Details

Adjustable Pressure Reducing and Stabilizing Valve Working Principle

When water is supplied from the inlet end of the pipeline, it flows through the needle valve into the main valve control chamber. The outlet pressure acts on the pilot valve via a conduit. When the outlet pressure exceeds the pilot valve's set value, the pilot valve closes, halting drainage from the control chamber. At this point, the pressure within the main valve control chamber rises, closing the main valve and preventing further increase in outlet pressure.

When the outlet pressure drops to the pilot valve's set pressure, the pilot valve opens, allowing the control chamber to drain downstream. Since the pilot valve's drainage capacity exceeds the needle valve's inlet flow, the pressure in the main valve control chamber decreases. The inlet pressure then opens the main valve. In a stable state, the control chamber's inlet and outlet flows are equal, maintaining a constant valve opening and steady outlet pressure.

Adjusting the pilot valve spring sets the outlet pressure.

Adjustable Pressure Reducing and Stabilizing Valve Operational Characteristics

1. Pressure control is stable and reliable. The pilot valve and main valve operate continuously, ensuring smooth and steady downstream pressure changes with minimal impact from inlet pressure fluctuations.

2. Operation is convenient. Once the working pressure is set, the main valve automatically adjusts to fluctuations in upstream pressure or flow, maintaining stable downstream pressure.

3. The valve body features a full-bore, straight-through, streamlined design. This minimizes hydraulic losses and delivers excellent energy-saving performance.