[Three rain valve to recommend the star product - Mechanical seal] Description: Mechanical seals and soft packing: Defect: ① structure is relatively messy 169-70 mechanical seal, high demand for the production and processing; ② device and replace contrast trouble, and needs of workers have a certain skill level device; ③ attack chance when somethin 169-90 mechanical seal, handling more difficult; ④ high time investment. Mechanical seal Classification There are many ways. According to the number of the seal faces: two single-acting and double-acting (multiple-acting) by way of pressure to uninstall: divided into balanced and unbalanced by the elastic component count: two large springs (single spring), a small spring (multi-spring) , plate spring form of the structure: divided into bulk and cartridge type [three rain valve to recommend star products - mechanical seals] Description: how to choose the right method of sealing how to choose a suitable seal: In normal temperature and pressure machine letters, no volatile materials nor use an explosive condition 169-95 mechanical seal, to choose packing; the pressure is less than 4 kg, volatile and flammable under normal use conditions of the material, it To select a single closure; working pressure exceed 4 kg (but less than 10 kg), under highly volatile and flammable materials, the use of the conditions, it is necessary to select the double mechanical seal. 169-90 mechanical seal mechanical seal manufacturers _ selected three rain (certified) _ Jing'an 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_44815405.html), for more information about the company.