In order to achieve the low noise and anti-cavitation, Dongchen DC1624L Series Control Valve adopts porous cage instead of DC1624 standard cage.

DOCN Low Noise Cage Control Valves have been designed to remarkably reduce acoustic noise in services of compressible fluids such as steam, air, and natural gas. The cage has a large number of small holes and renders an ideal pressure reduction with a combination of two steps of "restriction" and "diffusion and expansion". The fluid passage has been designed in an S-figure shape for smooth flow of fluid with less pressure loss and a stabilizer is provided as a strainer for flow near the cage, thereby permitting a large Cv value.