Brass Fixed-Ratio Pressure Reducing Valve YB43X-16T

YB43X fixed proportional pressure reducing valve: flange connection form, piston structure form, seat sealing surface material is rubber, nominal pressure PN10~PN16. proportional pressure reducing valve by the valve body, inlet gland, piston, outlet gland and O-ring, gasket and other parts. The general choice of proportional pressure reducing valve is to make the design flow in the flow - pressure characteristic curve of the straight line segment, so that the valve pressure and the valve pressure is still proportional to the front pressure. Proportional pressure reducing valve structure is rigorous, novel, smooth operation, lightweight for easy installation, stable pressure reduction ratio, that is, to reduce the “dynamic pressure” and reduce the “static pressure”, the material is stainless steel, suitable for clean water and gas.

Product Features

YB43X Fixed Proportional Pressure Reducing Valve features: beautiful appearance, reliable quality, accurate proportion, smooth operation, reducing both dynamic and static pressure. The valve utilizes the pressure difference generated by different carrier areas at both ends of the piston inside the valve body to change the pressure behind the valve to achieve the purpose of pressure reduction. The ratio of pressure reducing valve is: (2:1) - (3:1) - (4:1) - (3:2) - (5:2), etc. The ratio of pressure reducing valve can also be designed according to the requirements of users.

Working Principle

When water usage ceases in the downstream pipeline network, the pressure behind the piston increases. This causes the piston of the proportional pressure reducing valve to lose equilibrium and move forward, thereby closing the valve. When no water is drawn from the downstream pipeline network, the valve remains closed, maintaining a constant pressure ratio between upstream and downstream. When a fire hydrant or sprinkler head activates downstream, the upstream pressure exceeds the downstream pressure, pushing the piston backward to open the proportional pressure-reducing valve. The downstream pipeline pressure decreases with increasing flow rate (following the flow-pressure characteristic curve) until reaching equilibrium, at which point the piston stops moving. The YB43X fixed proportional pressure reducing valve utilizes the differing cross-sectional areas at both ends of its internal floating piston to create a pressure differential. This alters the inlet and outlet water pressure conditions, achieving the pressure reduction objective.

Product Characteristics

• Simple structure by using hydraulic principle to control the adjustment.
• Decompression ratios are accurate for high volume traffic.
• Reduce both dynamic and static pressure.
• Smooth operation without noise, no vibration, reduce water hammer, protect the pipe network.
• Suitable for installation at any angle.
• Light weight, small size, easy to install and maintain.

Product Parameters

Product Size Reference