Lift Type Check Valve

lift type check valve adopts a vertical motion disc structure. When the medium flows forward, the fluid pressure pushes the disc up to form a passage; when the flow stops, the disc closes quickly under the action of its own weight and spring. This physical characteristic makes the lift type check valve have a more precise opening and closing response than other check valves.

Advantages

It is reflected in the accuracy of the opening and closing mechanism. Compared with the traditional swing check valve, the lift type check valve achieves sealing through the axial lifting and lowering of the valve disc. This linear motion can effectively eliminate the water hammer phenomenon. Experimental data show that in the DN200 pipeline system, this structure can reduce the water hammer pressure fluctuation by 62%, which is particularly suitable for working conditions where the water pump is frequently started and stopped.

The continuous stability of the sealing performance is another highlight. The lift type check valve adopts a metal-elastomer composite sealing surface design, which maintains a leakage standard of 0.01L/min·m in long-term operation. In a seawater desalination project in a coastal city, after 127 valves of this type were continuously operated for 3 years, the sealing surface wear rate was only 1/8 of that of traditional valves.

The low flow resistance characteristics make it significantly advantageous in the field of energy saving. The optimized flow channel design makes the pressure loss of the lift type check valve at the rated flow rate not exceed 0.15bar, which is about 40% lower than similar products. A case of transformation of a regional heating system shows that after replacing the valve, the annual power consumption of the system pump group is reduced by 72,000 kWh.

Maintenance convenience is also worthy of attention. The lift type check valve adopts a modular structure design, and routine maintenance does not require the removal of the pipe flange. Technicians can complete 90% of maintenance work through the top inspection port, and the single maintenance time is shortened to 1/3 of that of traditional valves. The maintenance record of a water treatment system in an industrial park shows that the annual maintenance cost of this type of valve is reduced by 58%.