Model HCN Low-Noise Cage type Control Valve shave 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 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