Valve VI under complex conditions hard seal problem was overcome

Valve leakage has always been a chronic problem in the domestic control valve industry, and complex conditions (high temperature, high pressure, pressure, clean media) under the seal is even more second to none. Hualin company has successfully overcome this problem. The scientific research stems from the needs of a user of the first domestic LNG production line. The actual working conditions are: high temperature (300 ℃), high pressure (PN10), large pressure difference (6MPa), large temperature difference Cycle changes), clean media, Class VI leakage needs. They have contacted dozens of domestic valve manufacturers, the answer is difficult to reliably guarantee. Contact foreign products, the price is made 10 times! Under the guidance of "industrial self-control execution difficult to find Hualin is not difficult," they asked the Hualin company to tackle the key requirements. Urgent users are anxious Hualin style. Deyang Hualin technical department set up a special research team in the domestic well-known expert valve, Hualin company chairman Mingci East under the guidance of "rigid and soft" principle, the design of a new type of valve seat structure, and then To be a special hardening treatment, the ultimate success of the valve seal leak zero gas requirements (in excess of the GB / T 421392 standards specified level VI leak level requirements). The valve sent to the scene, the use of all normal so far, has been the user's praise!