8407 BROADWAY SECURE SPACE STORAGE 2026-01-02

tgcu Fire & Building Products Technical Services: Tel: (800) 381-9312 / Fax: (800) 791-5500 Model BFV-N Butterfly Valve Wafer Style 21nch - 12 Inch (DN50 - DN300) General Description The Model BFV-N Wafer Style Butter- fly Valves (Ref. Figure 1) are indicat- ing type valves designed for use in fire protection systems where a visual in- dication 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 po- sition during the first two revolutions of the handwheel. WARNINGS The Model BFV-N Wafer Style Butter- fly Valves described herein must be in- stalled and maintained in compliance 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 maintain- ing their fire protection system and de- vices in proper operating condition. The installing contractor or sprinkler manufacturer should be contacted with any questions. 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)1 12 (DN300) Approvals The 2 through 12 inch (DN50 - DN300) Model BFV-N Wafer Style Butterfly Valves are UL and C-UL Listed and FM Approved. In addition, the Model BFV-N Wafer Style Butterfly Valves are listed by the California State Fire Marshall under Listing No. 7770-1670:101. All laboratory listings and approvals are for indoor and outdoor use. Maximum Working Pressure 250 psi (17,2) bar Materials of Construction: Body Ductile iron conforming to ASTM A-536 Disc Ductile iron conforming to ASTM A-395, Nickel Plated Seat Material Grade EPDM "E" rubber conforming to ASTM D-2000 Upper Stem Type 416 Stainless Steel conforming to ASTM 582 Operator Gear operator with iron housing Friction Loss The approximate friction loss, based on the Hazen Williams formula and ex- pressed 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 forthe 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 forthe 10 inch valve. • 22.3 feet' of 12 inch Sch. 30 pipe forthe 12 inch valve. 'NFPA 13 Page 1 of 4 MAY, 2007 TFPiSiS