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Control Valve Selection Criteria
2-Way
Unitary Globe
Fan Coil
Cartridge
Cage
Cartridge
Globe
Threaded Flanged
Attribute Specification
VU52 VU53 VCzA/B
V58x2
V5011N... V5011F V5011G V5011A V5011B VGF2xS
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)
Pipe Fittings
Sweat • • • •
NPT Internal Thread • • • • • •
•
Inverted Flare • • •
ANSI Flange • • •
Static Pressure
ANSI 125/150
•
•
•
• • •
ANSI 250/300 •
Other 300 psi 300 psi 230 psi
Media
Chilled Water • • • • • •
•
• • •
Hot Water • • • •
•
•
•
• • •
Low Pressure Steam N1, N3 •
•
• • •
High Pressure Steam
N2
•
•
Flow Capacity, Cv
Multiple ratings per pipe size • • • •
•
•
•
One rating/size above 1/2"
•
•
•
• • •
Valve Action
Direct Acting ****
N1, N2
•
•
• •
Reverse Acting ***** • •
N3
•
Rotary N.O. •
Rotary N.C. •
Flow Characteristic
Equal Percentage •
•
• • • •
Modified Equal Percentage •
Linear •
•
•
•
Quick Open • • •
Close-off
pressure***
High** (100 psid minimum) •
Medium (40 psid minimum) • •
Varies with actuator • •
•
•
•
• • •
Maximum Seat
Leakage
ANSI Class III (0.10% Cv max.) 0.02%
0.05%
•
ANSI Class IV (0.01% Cv max.) • •
Bubble-tight design •
Other (see product data literature) 33 mL/m 0.5%
0.5%
Rangeability
High (50:1 minimum)
N/A
•
•
•
•
• • •
Medium* (15~50:1) •
Low (under 15:1)
Trim
Brass, plated brass, bronze
N3
• • •
Brass plug /Stainless seat
N1
Stainless Steel
N2
•
•
Resilient materials • • • •
In-line
Serviceability
Cartridge • • • •
Packing
•
•
•
• • •
Rebuild
•
•
•
• •
Actuation Options
Electronic Modulating • •
•
•
•
• • •
Tri-state floating • •
•
•
•
• • •
Pulse Width Modulation •
2-position low voltage • • • o
•
•
•
• • •
2-position line voltage • • •
•
•
•
• • •
Electric Spring Return • • •
•
•
•
• • •
Electronic Fail Safe •
Pneumatic, low pressure •
•
•
•
• • •
Pnuematic bidirectional (Hi-Pr)
Pnuematic spring return (Hi-Pr)
Notes * Best used with supply water reset from outdoor air temperature.
** Can dead-head pumps. Use with VFD-controlled pumps with maximum pressure cut-out
*** Maximum operating differential pressure. Static close-off pressure may be higher. Maximum pressure for quiet service may be less.
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***** Stem up to close