[Three rain valve to recommend the star product - Mechanical seal] Introduction: In the past only to be taken to remove fluid leakage visible, invisible and not pay attention to the amount of volatile matter escaping control, thus causing environmental pollution and equipment and personal dangerous. Sealing Technology Committee and abroad such as the American Society of Lubrication Engineers friction formulation of the SP-30 (1994), SP-32 (1990) and SP-33 (1991) with the mechanical seal rotating control machinery, compressors and screw system for easy the amount of volatiles to escape regulatory guidelines. SP-30 is divided into three phases. Which explicitly states that the definition of blocking buffer fluid flow and clarify erroneous concepts of confusion. Blocking fluid is introduced between the double seal completely blocked the process fluid leak fluid into the surrounding environment. Blocking the fluid pressure is always higher than the process fluid pressure to be sealed. Buffer fluid is used as lubricants or buffers sealing fluid 109 between the double mechanical seal, the buffer fluid pressure is always lower than the pressure of the sealed process fluid. [Three rain valve to recommend the star product - Mechanical seal] Introduction: Reason seal leakage: (1), flushing pressure fluctuations can cause seal failure, flushing pressure must be higher than the pressure in the sealed chamber some 103 mechanical seals, enable loading In front of the pump solenoid valve and delay switch ensures rinse any residue before and after pump start or stop rinse 108 mechanical seals, such as the use of quenching methods to control the temperature of the mechanical seal, must maintain pressure seal chamber. (2), if the cooling spacer is a layer of scale precipitation, we can install a sealed chamber at the bottom of the graphite liner, the use of its thermal barrier to solve these problems. (3), the leakage of the heat exchanger to cool the surface is often hampered by fouling of heat transfer, fluid flow inside the cooler on speeding, or the direction of the heat exchanger installed backwards. Centrifugal pump mechanical seals, mechanical seal alloy selected three rain (certified), Hongqiao mechanical seal is provided by three rain Valve Co., Ltd. of Tianjin. Valve Co., Ltd. Tianjin three rain (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.