Справочник Пользователя для Honeywell MS4103
21
Control Ball
Butterfly
Threaded
Flanged
Resilient Seat
Attribute
Specification
VBN3
VBF3
VFF3
VFF6
Pipe Size
1/2" [DN15]
•
3/4" [DN20]
•
1" [DN25]
•
1 1/4" [DN32]
•
1 1/2" [DN40]
•
2" [DN50]
•
•
•
2 1/2" [DN65]
•
•
•
3" [DN80]
•
•
4" [DN100]
•
•
•
5" [DN125]
•
•
•
6" [DN150]
•
•
•
Other (maximum size)
20" [DN500]
Pipe Fittings
Sweat
NPT Internal Thread
•
Inverted Flare
ANSI Flange
•
•
•
Static Pressure
ANSI 125/150
•
ANSI 250/300
Other
360 psi
250 psi
Media
Chilled Water
•
•
•
•
Hot Water
•
•
•
•
Flow Capacity, Cv
Multiple ratings per pipe size
•
•
One rating/size above 1/2"
•
•
Valve Action
Mixing A-B-AB porting
•
•
•
Mixing A-AB-B porting
•
Diverting AB-B-A porting
•
o
•
Diverting A-AB-B porting
•
A-port Flow
Characteristic
Equal Percentage
Modified Equal Percentage
•
•
•
•
Linear
Quick Open
B-port Flow
Characteristic
Modified Equal Percentage
•
•
Linear
Linear, Reduced Cv
•
•
Total Constant Flow
Quick Open
Close-off
pressure***
High (60 psid minimum)
•
•
•
Medium (30 psid minimum)
•
•
•
Varies with actuator
Maximum
Seat
Leakage**
ANSI Class III (0.10% Cv max.)
ANSI Class IV (0.01% Cv max.)
ANSI Class IV (0.01% Cv max.)
•
A-port
•
•
Bubble-tight design
•
•
Other (see product data literature)
B-port
Rangeability
High (50:1 minimum)
•
•
Medium* (15~50:1)
o
Low (under 15:1)
•
•
Trim
Brass, plated brass, bronze
•
Stainless Steel
•
Resilient materials
•
•
In-line
Serviceability
Cartridge
Packing
•
•
Rebuild
•
Actuation Options
Electronic Modulating
•
•
•
•
Tri-state floating
•
•
•
•
Pulse Width Modulation
2-position low voltage
•
•
Limited
2-position line voltage
o
o
•
•
Electric Spring Return
•
•
Limited
Electronic Fail Safe
Pneumatic, low pressure
Limited
Pnuematic bidirectional (Hi-Pr)
•
•
Pnuematic spring return (Hi-Pr)
•
•
Notes
* Best used with supply water reset from outdoor air temperature.
** A port specification
*** A-port maximum operating differential pressure. Static close-off pressure may be higher. Maximum pressure for quiet service may be less.
**** Stem down to close
***** Stem up to close
"Limited" = not available in large sizes
Val
V
e Selection
Control Valve Selection Criteria
3-Way