LN81/82 series are characterized by insensitive to impurities and excellent sealing performance. Seat retaining cage is available for all trim designs to optimize flow conditions and resist erosion by cavitation. Fast and easy to maintain due to its quick-changeable trim combination. LN81 series can be used in a wide range of applications, especially suitable for the fluid with entrained particle and larger temperature variety. LN82 series, with perforated cylinder Plug, can effectively protect sealing surface of seat to be damaged by high speed flow scoured.