This pump features a rear-opening design that makes operation simple and efficient. It is known for its stability, reliability, and long service life. The motor runs quietly, with noise levels about 10dB lower than similar products. Before leaving the factory, each unit undergoes a rigorous 2.4MPa pressure test to ensure safe performance. Its open structure allows easy maintenance without requiring the pump body or inlet and outlet pipes to be disassembled, making it highly versatile. Only four types of shafts, bearings, and coupling covers are used, significantly reducing spare parts inventory and simplifying management. The impeller can be easily overhauled before and after the seal ring, and the rear cover of the impeller is equipped with a balance hole to reduce axial wear. The mechanical sealing system ensures no leakage even under high water pressure. The stainless steel shaft and imported bearing structure offer both dry grease lubrication and wet oil lubrication options. Advanced design software and hydraulic models are used in the manufacturing process, with key components produced using CNC lathes and vacuum casting techniques. All impellers go through strict dynamic balance testing. The double scroll structure incorporates high-quality mechanical seals and various lubrication options for convenience, quick repair, and reliable performance. It features a high-quality double row thrust ball bearing with a minimum service life of up to five years. The pump is available in a range of materials, including cast iron, bronze, and special alloys, suitable for different installation environments. Its compact size reduces floor space and lowers building investment, making it ideal for outdoor use. The motor can be installed at a high position to prevent flooding. The pump has a vertical structure with equal inlet and outlet diameters aligned on the same center line, allowing it to be installed like a valve in pipelines. Its compact and elegant design saves space and reduces construction costs. The impeller is directly mounted on the motor’s extension shaft, resulting in a short axial dimension and a reasonable arrangement of pump and motor bearings. This design effectively balances radial and axial loads during operation, ensuring smooth performance and minimal vibration and noise. Installation and repair are straightforward—no need to disassemble the piping system. Simply remove the pump coupling nut to extract all rotor parts. The pump supports both series and parallel operation modes, enabling flexible control of flow rate and head. It can be installed vertically or horizontally based on pipeline layout requirements. The flow range spans from 1.5 to 1600 m³/h, with a lift capacity between 5 and 125 meters. It comes in three types: basic, split, and cut. Rectangular Return Air Duct,Heat Insulation Air Duct Systems,Duct Air Conditioners,Air Conditioning Ducts Jiangsu Buna Technology Development Co. , Ltd. , https://www.bunaduct.com