VFF3
Resilient seat three-way valves
provide control for HVAC system
applications including chilled
water, hot water, cooling tower
water, thermal storage systems,
and steam.
SPECIFICATIONS
Body Pattern ........................................3 way (A-B-AB)
Valve Action ..........................................Normally Closed
Connection Type ..................................Lugged
Controlled Medium ...............................Chilled and hot water, up to
50% glycol
Actuator Control Type ..........................Electric floating, and
modulating; pneumatic spring
and non-spring return
Type of Enclosure .................................NEMA 2 housing, DCA,
NEMA 4 industrial electric,
pneumatic linear
Flow Characteristic ...............................Modified Equal Percent
Mounting ..............................................ANSI Flanged
Static Pressure Rating (max) ................250 psi (1724 kPa)
Maximum Differential Pressure Ratings
(Close-off) .............................................175 psi (1206 kPa)
Actuator Ambient Temperature Ratings -5 F to 140 F (-20 C to 60 C)
Temperature Range ..............................-40 F to 250 F (-40 C to 121 C)
Materials
(Body) ...................................................Polyester-coated cast iron
ASTM A126 Class B
(Stem) ...................................................416 stainless steel
(Seat) ....................................................Peroxide-cured EPDM resilient
seat
(Plug/Ball/Disc) .....................................Nylon 11-coated ductile iron
APPROVALS
CE .........................................................Compliant
Underwriters Laboratories, Inc. ............C/US UL873, Plenum Rated
DIMENSIONS DIAGRAM
M27020
C
T
G
P
T
F
H
R
3 (76)
C
C
2
[DN50]
2-1/2
[DN65]
3
[DN80]
4
[DN100]
7-1/2 6-3/4 5-1/2 2 5-3/4
5 [191] [170] [141] [49] [147]
[DN125]
6
[DN150]
8
[DN200]
10
[DN250]
12
[DN300]
14
[DN350]
16
[DN400]
18
[DN450]
8-1/2 16 8-3/4 4-1/2 12-1/2
20 [217] [406] [221] [115] [320]
[DN500]
* 175 PSI [1206 KPA] CLOSE-OFF UP TO 12 INCHES [DN 300], 150 PSI [1034 KPA] OTHERWISE
**NOTE: VALVE SIZES 2 TO 3 INCHES HAVE 175 PSI [1206 KPA] CLOSE-OFF AND ARE
AVAILABLE ONLY WITH FULL CUT DISKS.
