The valve applies labyrinth cage, which composed of several cylindrical discs where distribute labyrinth on its coaxial surface. According to different technical parameters of medium, the cage, made up from different labyrinth and congruent layers, divides the overall passageway into many tiny round-about or step-like throttling passageway, and forces the fluid to continuously change the flow direction and area, and gradually reduce the flow pressure so as to prevent from the arising of flash evaporation or cavitation, and prolong the service life of trims.
Size: 1 1/2"~12"（DN40~DN300）
Pressure Rating: ASME CLASS 900~2500 (PN160~PN420)
Body material: Carbon steel, Stainless steel, Alloy steel, Duplex stainless steel
Seat Leakage：ANSI Ⅳ(0.01%)