HCN Pneumatic Low-Noise Cage Type Control Valve的简单介绍designed to remarkably reduce acousticnoise in services of compressible fluidsHCN Pneumatic Low-Noise Cage Type Control Valve的详细信息Model HCN Low-Noise Cage type Control Valve shave been designed to remarkably reduce acoustic noise in services of compressible fluids such assteam, air, and natural gas. The cage has a large number of small holes and renders an ideal pressure reduction with a combination in two steps of "restriction" and "diffusion and expansion." The fluid passage has been designed in 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. The valve plug is of a pressure-balanced type which allows control of a high differential pressure with as mall actuating force. The actuator is a compact but high output diaphragm motor of a multiple spring type structured in a simple mechanism. The model HCN valves, which are compact but of a low noise type and render high dynamic stability, are suitable especially for control of high temperature, high pressure or high differential pressure process lines. SPECIFICATIONS Body Type Straight-through, cast globe valve Nominal size 1-1/4", 1-1/2", 2", 2-1/2", 3", 4", 5", 6", 8", 10", 12", 14", 16" Pressure rating ANSI Class 125, 150, 300, 600 JIS 10K, 16K, 20K, 30K, 40K PN1.6, 4.0, 6.4, 10.0 Mpa End connection Flanged End: FF, RF, RJ, LG According to ANSI B16.5, JIS B2201, JB/T79.1 PN1.6MPa, JB/T79.2 Welded End: SW, BW Threaded End: Rc Material A216 WCB, A216WC6, A352 LCB, A351 CF8, A351CF8M, A351 CF3M, A351 CF3(see table3-1,3-2) Bonnet Plain bonnet (-17 to 230℃) Extension bonnet Type1(-45 to -17℃ and 230 to 566℃) Extension bonnet Type 2 Cryogenic Integral cast type (-100 to -45℃) Welded type (-196 to -100℃) (See Figure 2-1, 2-2) Gland type Bolted Gland Packing V shaped PTFE, PTFE, Flexible graphite Gasket material Stainless steel(SUS304, SUS316, SUS316L), copper, aluminum Trim Valve plug Pressure balanced type |