Tyco BFV-N Manual

Model BFV-N Butterfly Valve
Wafer Style
General
Description
The TYCO Model BFV-N Wafer Style
Butterfly Valves (Ref. Figure 1) are indi-
cating type valves designed for use in
fire protection systems where a visual
indication is required as to whether the
valve is open or closed. They are used,
for example, as system, sectional, and
pump water control valves. They are
suitable for installation between ANSI
Class 125 or 150 flanges without the
need for flange gaskets.
For applications requiring supervision
of the open position of the valve, the
Gear Operators for the Model BFV-N
Butterfly Valves are provided with
two sets of factory installed internal
switches each having SPDT contacts.
The supervisory switches transfer their
electrical contacts when there is move-
ment from the valve's normal open posi-
tion during the first two revolutions of
the handwheel.
NOTICE
The TYCO Model BFV-N Wafer Style
Butterfly Valves described herein must
be installed and maintained in compli-
ance with this document, as well as with
the applicable standards of the National
Fire Protection Association, in addition
to the standards of any other authori-
ties having jurisdiction. Failure to do so
may impair the performance of these
devices.
The owner is responsible for maintaining
their fire protection system and devices
in proper operating condition. Con-
tact the installing contractor or product
manufacturer with any questions.
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Technical
Data
Model
BFV-N
Sizes: ANSI Inches (DN)
2 (DN50), 2-1/2 (DN65), 3 (DN80),
4 (DN100), 5 (DN125), 6 (DN150),
8 (DN200), 10 (DN250), 12 (DN300)
Approvals
UL and C-UL Listed
FM Approved
California State Fire Marshall under
Listing No. 7770-1670:101
Maximum Working Pressure
250 psi (17,2) bar
Materials of Construction:
Body
Ductile iron conforming to ASTM A536
Disc
Ductile iron conforming to ASTM A395,
Nickel Plated
Seat Material
Grade EPDM "E" rubber conforming to
ASTM D2000
Upper Stem
Type 416 Stainless Steel conforming to
ASTM 582
Operator
Gear operator with iron housing
MARCH 2015
Worldwide
www.tyco-fire.com
Contacts
Friction Loss
The approximate friction loss, based
on the Hazen Williams formula and
expressed in equivalent length of pipe
with C= 120, is as follows. Unless oth-
erwise indicated, the data is based on
friction loss information collected at a
typical flow rate of 15 feet per second.
• 4.4 feet of 2 inch Sch. 40 pipe for
the 2 inch valve.
• 6.2 feet of 2-1/2 inch Sch. 40 pipe
for the 2-1/2 inch valve.
• 7.6 feet of 3 inch Sch. 40 pipe for
the 3 inch valve.
• 9.2 feet of 4 inch Sch. 40 pipe for
the 4 inch valve.
• 9.0 feet* of 5 inch Sch. 40 pipe for
the 5 inch valve.
• 8.2 feet of 6 inch Sch. 40 pipe for
the 6 inch valve.
• 12.7 feet* of 8 inch Sch. 30 pipe for
the 8 inch valve.
• 20.1 feet* of 10 inch Sch. 30 pipe for
the 10 inch valve.
• 22.3 feet* of 12 inch Sch. 30 pipe for
the 12 inch valve.
*NFPA 13
TFP1515