VFF2
Resilient seat 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 (NC, NC/NO; NSR)
Valve Action .........................................Normally Closed, convertible
to Normally Open with Spring
Return DCA
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
M27011
D
R
G
T
R
F
L1
L2
W
H
NEMA 4X ACTUATORS ARE WATERPROOF AND CORROSION-RESISTANT.
1
PIPE SIZE
IN. [mm]
W H1 L1 L2 G W H1 L1 L2 G
2
[DN50]
