[Three rain valve to recommend the star product - Mechanical seal] Description: preparation of construction machinery seal proposition before: Before mechanical seal advocate hydrostatic test, check the mechanical seal is not a leak appearance. If leaks are more H7N-43 mechanical seal, should try to find out the reason for cancellation. If still invalid H7N-38 mechanical seal, you should disassemble and inspect equipment from scratch. General hydrostatic test pressure for 2 to 3 kg / cm. Press the pump mechanical seal rotation plate car, check the light is not uniform. Such as hard disk drive, or not moving, you should check the equipment standards are not at fault, the device is not reasonable. Secondary seal; play a supporting role in sealing H7N-50 mechanical seal, the secondary seal ring divided compensation and non-compensation of ring seals. It can be an O-ring, V-ring, wedge ring, rectangular ring, etc., used to seal the shaft seal and mechanical seal, mechanical seal and housing. [Three rain valve to recommend the star product - the mechanical seal pump mechanical seal] describes maintenance requirements and procedures. Remove the machine to win the title, the first organic seal pump installation checks must meet the following requirements: 1, the maximum bending axis ≤0.05mm, axial runout ≤0.05mm; 2, beating ≤ ring seals at 0.01mm; 3, shaft or sleeve surface roughness install mechanical seal parts of contact for 1.6μm, and static ring sealing surface of the surface roughness of 3.2μm; H7N-35 mechanical seal, mechanical seal manufacturers selected three rain (already certification), Yangzhou mechanical seal is provided by three rain Valve Co., Ltd. of Tianjin. Valve Co., Ltd. Tianjin three rain (www.tjsymf.com) (www.tjsymf.com) is a leader in Tianjin, seals, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In three rain valve leadership with the staff warmly welcome all inquiries negotiations to create three rain valve a better future. You can also access (www.tjsymf.com/supply_details_44374460.html), for more information about the company.