Backflow Protection Valve

Different from ordinary disc-type silent check valves, UJ41 series adopts integral piston central guiding design. The valve disc moves vertically and accurately along the central axis without offset or jamming. It effectively eliminates unilateral wear and sealing deviation caused by long-term fluid impact, greatly improving running stability and service life under frequent start-stop and high-flow fluctuation conditions.

UJ41Y (Soft Seal): Equipped with high-elasticity, wear-resistant and aging-resistant polymer sealing ring, achieving absolute bubble-tight zero leakage. Suitable for normal-temperature water supply, drainage and circulating fluid systems with strict no-leakage requirements.

UJ41H (Hard Seal): Adopts precision metal hard sealing pair, resistant to high temperature, high pressure and scouring. It can stably operate under medium temperature and high-pressure industrial conditions, solving the failure problem of soft seal valves under high-temperature environments.

Built-in high-stability stainless steel spring provides synchronous fast closing action. The valve disc closes completely before medium backflow is formed, without metal collision and pipeline vibration. It thoroughly eliminates water hammer pressure surge and pipeline noise, effectively protecting water pumps, sensors and downstream pipeline accessories from fatigue damage.

Optimized streamline waist-drum type flow channel with no dead angle and smooth fluid passage. Compared with traditional swing check valves and ordinary lift check valves, it has lower pressure loss and higher flow efficiency, reducing long-term operating power consumption of pump units, making it an ideal energy-saving one-way valve for circulating pipeline systems.

The piston spring reset structure is not limited by installation direction, supporting horizontal, vertical upward and inclined pipeline installation. Compact integrated structure, small size and light weight. Internal components are fatigue-resistant and impact-resistant, realizing long-term maintenance-free operation, reducing engineering installation and later maintenance costs.