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VFF6
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-AB-B)
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
M27023
T
T
OPTIONAL POSITIONER
A
L2
R
C
C
C
R
F
H
Hp
PIPE SIZE
IN. [mm]
W H HP L1 L2 W H HP L1 L2
2
2-3/4 4-1/4 10-1/4 3 3
[DN50] [70] [109] [262] [76] [76]
2-1/2
3-5/8 5-2/8 11-2/8 4 4
[DN65] [91] [132] [284] [100] [100]
3
4 5-1/2 11-1/2 4-1/2 4-1/2
[DN80] [100] [141] [293] [113] [113]
4
4-3/4 6-7/8 12-7/8 6 6 4 5-1/2 11-1/2 4-1/2 4-1/2
[DN100] [120] [176] [328] [154] [154] [100] [141] [293] [113] [113]
5
5-3/8 7-3/4 13-3/4 6-1/8 6-1/8
[DN125] [137] [196] [349] [157] [157]
6
6-3/4 9-3/8 15-3/8 7-3/4 7-3/4
[DN150] [172] [238] [391] [196] [196]
8
6-3/4 9-3/8 15-3/8 7-3/4 7-3/4
[DN200]
8-7/8 11-5/8 17-5/8 9-1/2 9-1/2
[172] [238] [391] [196] [196]
10 [224] [295] [447] [240] [240]
[DN250]
12
[DN300]
14 [273] [342] [495] [339] [339]
[DN350]
16
[DN400]
18
[DN450]
20
[DN500]
13-3/8
13-3/8
[273]
[342]
[495]
[339]
[339]
19-1/2
10-3/4
13-1/2
9-1/2
[224]
[295]
[447]
[240]
[240]
8-7/8
11-5/8
17-5/8
9-1/2
[176]
[328]
[154]
[154]
(VFF3/6_W1YCS/DS/ES/PS/XS)
FULL CUT DISK, HIGH CLOSE-OFF*
UNDER CUT DISK, 50 PSI CLOSE-OFF**
(VFF3/6_V1YCS/DS/ES/PS/XS)
13-3/8
4-3/4
6-7/8
12-7/8
6
6
[120]
10-3/4
13-1/2
19-1/2
13-3/8
* 175 PSI [1206 KPA] CLOSE-OFF UP TO 12 INCHES [DN 300], 150 PSI [1034 KPA] AT 14 INCHES
AND NO PRODUCT AVAILABLE GREATER THAN 14 INCHES.
**NOTE: VALVE SIZES 2 TO 3 INCHES ARE AVAILABLE ONLY WITH FULL CUT DISKS.
WITH PNEUMATIC SPRING RETURN ACTUATORS
Resilient Seat Butterfly Valves
VFF6