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145
VFF1
Resilient seat in two-way valves,
provide control for HVAC system
applications including chilled water,
hot water, cooling tower water,
thermal storage systems, and steam.
SPECIFICATIONS
Body Pattern ........................................2 way (S/R NO)
Valve Action ..........................................Normally Open
Connection Type ..................................Lugged
Controlled Medium ...............................Chilled and hot water, up to
50% glycol
Actuator Control Type ..........................Pneumatic, Spring Return
Type of Enclosure .................................Pneumatic
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 -20 F to 150 F (-29 C to 66 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
DIMENSIONS DIAGRAM
T
L2
G*
L1
M2701
L1
L2
D
F
R
H
PIPE SIZE
IN. [mm]
G H HP L1 L2 G H HP L1 L2*
2
[DN50]
2-1/2
[DN65]
3
[DN80]
4
7-1/4 10 20
5-5/8 3-1/8 6-1/4 16
[DN100]
[186] [254] [506]
[144] [79] [160]
[406]
5
7-1/4 10 20
[DN125]
[186] [254] [506]
6
[DN150]
8
22-3/4
[DN200]
[578]
10
22-3/4
[DN250]
[578]
12
LOW PRESSURE ACTUATORS NOT
AVAILABLE IN THESE, AND LARGER BODY SIZES.
[DN300]
VALVE STROKE IS LIMITED TO 70 DEGREES.
3
10-1/8
9
6-7/8
[578]
[257]
[175]
[227]
[175]
22-3/4
[227]
(VFF1/2_V1Y8P/PP)
[257]
[578]
6-1/4
16
5-5/8
3-1/8
(VFF1/2_W1Y8P/PP)
6-7/8
9
[76]
[144]
[79]
[160]
[406]
22-3/4
10-1/8
FULL CUT DISK, 175 PSI CLOSE-OFF
UNDER CUT DISK, 50 PSI CLOSE-OFF**
**NOTE: VALVE SIZES 2 TO 3 INCHES ARE AVAILABLE ONLY WITH FULL CUT DISKS.
[76]
3
Resilient Seat Butterfly Valves
VFF1
SUBMITTAL SHEETS