Special Note: The correct installation position of the pump or not directly affect the use of the pump, the pump must ensure that the device mounting height NPSH NPSHa value is greater than the pump in the operating range maximum NPSH NPSHr value of considering 0.3∽0.5m surplus quantity. assembly and disassembly due to assembly and disassembly of the pump is relatively simple in a pump 20SH-19, and relatively similar 20SH-19A in a pump, while there are detailed instructions on the installation instructions. In this structure with an S (with grease lubricated sleeve bearing structures) as an example of its assembly and disassembly of the S in the open pump assembly and disassembly other structures are not described in detail, specifically refer to the corresponding installation instructions 20SH-28 in a pump | in a pump | Machinery sealing, retaining sleeve (View) by Shijiazhuang-school Pump Co., Ltd.. Shijiazhuang-school Pump Co., Ltd. (www.shipaipump.com) is a professional, "slurry pumps, submersible pumps, sewage pumps, chemical pump, pulp pump, water pump, mud pump, multi-stage," the company. Since its inception, we adhere to the "good faith, sound management" approach, the courage of healthy competition in the market, so that the "Shijiazhuang-faction" brand has a good reputation. We adhere to the "service first, customer first" principle, so Shijiazhuang-pump in the other faction, has won the trust of the public, and establish a good corporate image. Special Note: This information is for reference only pictures and information, please contact us to obtain the most accurate information, thank you!