Hi-Flow™
Control Valves are versatile, single-seated,
top-guided globe valves designed for precise control of
pressure, temperature, level and flow process variables
at an economical price. Standard models incorporate push-to-close
action and linear flow characteristics generally accepted
as industry standard; however, control valves with push-to-open
action and/or equal percentage flow characteristics are
also readily available to satisfy unique process control
applications. High flow capacity coupled with superior rangeability
(50:1) inherent on the Hi-Flow™ control valve design enables
the selection of standard models for a wide variety of process
control applications without sacrificing control precision.
Restricted trim and needle valves are also readily available
for extreme low-flow applications with no reduction in pipe
size required.
Heavy-duty Hi-Flow™ Control Valves are ruggedly
constructed of the highest quality materials, precision
machined and performance tested to assure years of trouble-free
service. Available with bronze or 316SS body, trim is 316SS
with all welded plug construction to provide superior durability
and corrosion resistance. Standard packing consists of spring
loaded PTFE V-rings (3) and wiper to minimize friction without
leakage at high operating pressures. Inverted V-ring construction
for vacuum service; double opposing V-ring construction
for alternating positive pressure/vacuum service; and graphite
packing with or without built in lubricator are also readily
available.
SPECIFICATIONS
Service: Compatible liquids, gases, and steam.
Line Size: 1/2" to 2".
Body Style: 2-way, push-to-close globe.
End Connections: 1/2" to 2" female NPT.
Pressure Limit: Iron and Bronze Body: 250 psi (17.2
bar), 316 SS Body: 300 psi (20.7 bar).
Wetted Materials:
Body: Iron, bronze
or 316 SS.
Trim: 316 SS.
Packing: PTFE.
Temperature Limits: 20 to 400°F (-7 to 204.4°C).
Flow Leakage: Meets ANSI/FCI 70-2 Class IV (0.01%
of Cv in the closed position).
Stem Connection: 5/16" - 24 NF2.
Options: Push-to-open, equal percentage characteristics,
restricted trim or needle plugs, graphite packing with lubricator,
custom connections, etc.
Consult factory with operating parameters
for non-standard control valve requirements.
VALVE COEFFICIENTS Cv
Cv vs. PERCENT OF TOTAL TRAVEL
| SIZE |
10 |
20 |
30 |
40 |
50 |
60 |
70 |
80 |
90 |
100 |
| 1/2" |
.78 |
1.50 |
2.30 |
2.90 |
3.60 |
4.40 |
5.10 |
5.80 |
6.20 |
6.45 |
| 3/4" |
1.19 |
2.40 |
3.60 |
4.80 |
5.90 |
7.10 |
8.40 |
9.70 |
10.50 |
10.72 |
| 1" |
1.81 |
3.80 |
5.80 |
7.80 |
9.75 |
11.75 |
13.75 |
15.80 |
17.10 |
17.42 |
| 1-1/4" |
2.57 |
5.40 |
8.20 |
11.00 |
13.80 |
16.60 |
19.50 |
22.30 |
24.75 |
25.30 |
| 1-1/2" |
3.25 |
6.80 |
10.25 |
13.80 |
17.25 |
20.80 |
24.25 |
27.75 |
31.00 |
32.10 |
| 2" |
4.67 |
10.30 |
15.50 |
21.00 |
26.40 |
31.90 |
37.30 |
43.25 |
48.50 |
50.30 |
|
