User Guide

F-27194-5 © Copyright 2010 Schneider Electric All Rights Reserved. 3
SPECIFICATIONS
Maximum Operating Pressure Differential
The maximum operating pressure differential is dependent on the size of the valve and the
actuator. See the Vx-8xxx Selection Guide, F-27199, for maximum operating pressure
differential.
Normal Position of Valve Assembly
For a valve assembly (valve, linkage, and actuator) to have a normal position, the actuator
must be of the spring return type. See Table-2 for compatible spring return and non-spring
return actuators and their normal (stem up) positions.
Table-1 Specifications/Models
Specifications
Valve Body Series
VB-8223-0-5-P
Service Chilled or Hot Water (up to 50% Glycol) and Steam
Flow Characteristics (Figure-1) Equal Percentage
Sizes 2-1/2" to 6"
Type of End Fitting 125 psi Flanged
Valve
Materials
Body Cast Iron
Seat Brass
Stem Stainless Steel
Plug Forged Brass
Packing Spring-loaded TFE/EPDM
Seat Ring EPDM
ANSI Pressure Class (Figure-2)
125 psi Flanged
(up to 200 psig below 150°F)
Maximum Inlet Pressure, Steam 35 psig (241 kPa)
Allowable Control Media Temperature 20 to 281°F (-7 to 138°C)
Close-off Pressure
a
a
Exceeding close-off pressure voids product warranty. Do not exceed maximum operating pressure differential. See Vx-8xxx Selection Guide, F-27199 for
maximum operating pressure differentials.
125 psi (856 kPa)
Allowable Differential Pressure for Steam
b
b
Maximum recommended differential pressure in closed position. Do not exceed recommended differential pressure or integrity of parts may be affected.
20 psi (138 kPa)
Valve Size C
v
Rating
c
c
(where ΔP is measured in psi) k
vs
= C
v
/ 1.156 (where ΔP is measured in bar; 1 bar = 100 kPa)
k
vs
Rating
c
Complete Valve Body Part Number
2-1/2” 56 48 VB-8223-0-5-12
3” 85 74 VB-8223-0-5-13
4” 145 125 VB-8223-0-5-14
5" 240 208 VB-8223-0-5-15
6" 370 320 VB-8223-0-5-16
C
v
gpm
PΔ
-----------=
k
vs
m
3
h⁄
PΔ
---------------
=