Brochure

39F-27855-10
VB-7200 ½"…2" 2-Way Brass
Valves Soft Seat Union
Brass Trim Soft Seat Union for Radiators and Other Applications
2-Way Brass Trim Body Type
Union Angle NPT Union Straight NPT Union Straight NPT
Series Part Number
VB-7211- 0 -3 - VB -7211- 0 - 4- VB-7221-0-4-
Pipe Sizes
½"…1¼”
Stem Action
Up Open Up Open Up Closed
ANSI Pressure Class
250 psi (up to 400 psig below 150°F)
ANSI Seat Leakage
e
Class IV
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age dependent on proper water conditioning
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Control Media and Temperature

Flow Curve

Allowable ΔP for Water
b
35 psi (241 kPa)
Max. for normal life
a
87 psi (600 kPa) Max. for normal life
a
Max inlet pressure for saturated steam
35 psi (240 kPa)
Max ΔP for sizing, saturated steam
b
80% of inlet pressure up to 15 psig and 42% of absolute (gauge pressure plus 14.7)
inlet pressure above 15 psig inlet
Max ΔP at close-off, saturated steam
b
󰀨
Size Cv Kvs
Rangeability
Greater Than
c
Valve Body Part Numbers
½”
0.4 0.3 5:1 VB-7211-0-3-01 VB-7211-0-4-01
c
VB-7221-0-4-01
c
1.3 1.1 15:1 VB-7211-0-3-02 VB-7211-0-4-02
c
VB-7221-0-4-02
c
2.2 1.9 25:1 VB-7211-0-3-03 VB-7211-0-4-03
c
VB-7221-0-4-03
c
4.4 3.8 40:1 – VB-7211-0-4-04
c
VB-7221-0-4-04
c
5.0 4.3 40:1 VB-7211-0-3-04 – –
¾”
5.5 4.8 50:1 VB-7211-0-3-05 VB-7211-0-4-05
c
VB-7221-0-4-05
c
7.5 6.5 60:1 – VB-7211-0-4-06
c
VB-7221-0-4-06
c
8.5 7.4 50:1 VB-7211-0-3-06 – –
1”
10 8.7 60:1 – VB-7211-0-4-07
c
VB-7221-0-4-07
c
14 12.1 60:1 VB-7211-0-3-07 VB-7211-0-4-08
c
VB-7221-0-4-08
c
16 13.8 75:1 VB-7211-0-3-08 – –
1¼”
20 17.3 75:1 – VB-7211-0-4-09
c
VB-7221-0-4-09
c
22 19 75:1 VB-7211-0-3-09 – –
a - To minimize noise, ensure the flow rate in the piping is less than 10 ft (3m) / second and the differential pressure is less than 35 psi (241 kPa). Operating with differential
pressures above 35 psi may result in additional noise but is acceptable up to 87 psi (600 kPa). Operating within the cavitation zone may result in noise and internal valve
damage.
b - Maximum recommended differential pressure in open position. Do not exceed recommended differential pressure (pressure drop), as integrity of
parts may be affected. Exceeding maximum recommended differential pressure voids product warranty.
c - The VB-7211-0-4-xx and VB-7221-0-4-xx series valves all have rangeabilities greater than 100:1.
e - Refer to Seat Leakage Classes table.
2. VB-7000 Series
½"…2" Globe Valves
2. VB-7000 Series ½"…2"
Globe Valves
Seat Leakage Classes
ANSI/FCI 70-2
Leakage Class
Maximum Seat Leakage
Class II 0.5% of rated Cv
Class III 0.1% of Rated Cv
Class IV 0.01% of Rated Cv
Class V
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