plunger valve for pressure control and flow regulation

The plunger valve with Piston structure: The crank slider drives the axial displacement of the piston, featuring an annular flow channel and a multi-jet design, ensuring stable flow patterns. The linear adjustment ratio can reach 100:1, with an accuracy of ±2% to ±5%. And The design of guide rail + dry shaft valve stem makes it difficult for impurities to get stuck, suitable for sewage/sandy media, and has a long maintenance cycle.

Main Advantages:

Flow control: The axial moving of the piston changes the cross-sectional area of the flow passage, exhibiting a linear flow characteristic (with a stable slope in the relative stroke range of 10%~90%). The crank-connecting rod mechanism ensures high linearity, with an adjustment ratio of 100:1+ and an accuracy of ±2%~±5%. The flow deviation is ≤±5%, and the rated flow coefficient deviation is ≤±10%

Pressure drop control: multi-stage pressure reduction combined with a circular flow channel design disperses the total pressure drop across multiple throttling stages. The fan blade ring/the cage make the air bubbles in the flow collision quickly and bigly dissipation the flow energy, preventing valve localized high-pressure. The valve seat/piston sealing surface is optimized, resulting in a low resistance coefficient when fully open. It maintains stable pressure reduction under high pressure differences, with a water head loss of ≤2m and no localized cavitation damage

Noise control: The flow channel is smooth and free of vortexes, reducing turbulence noise; cavitation is limited to the central area, avoiding noise from bubble bursting on the valve wall; the internal structure is optimized to reduce vibration transmission. The operating noise is less than 85dB, with no obvious pipe resonance

Remote and Safety: The electric actuator supports PLC/4G remote control, with a quick initial closing followed by a slower completely close, to avoid water hammer impact.

Flow-pressure-Opening Curve

Application: 

• Municipal water supply: main pipes from water plants, pressure regulation in different zones of the pipe network, pressure stabilization at community entrances, and flow control at pump station exits to reduce leakage and water hammer risks.

• Water conservancy projects: flood discharge of reservoir dams, allocation of water transfer branches, flow equalization of irrigation systems, and pressure stabilization of technical water supply for hydropower stations.

• Industrial processes: Cooling/process water systems in chemical, power, metallurgical, and other industries, achieving linear flow regulation and pressure stabilization under large pressure differentials.

• Wastewater treatment: Improve flow control in pump stations, stabilize liquid levels in biochemical tanks, regulate sludge conveying pressure, and resist impurities and scaling.

• Special scenarios: energy dissipation and pressure reduction on long-distance water supply trunk lines, water hammer protection in pipe networks, and pressure isolation in high- and low-pressure areas of pipe networks.

Eliminated covitation by vanned Ring, Slotted Cylinder and perforated cage cylinder