Watts 0525825 4 BF04-111-15-M2 Manufacturer Watts Regulator Company UPC #098268606485 Watts 0525825
Watts Series BF resilient seated butterfly valve is available in sizes 2" - 24" (50-600mm), wafer or lug
body design. This series was designed to meet the stringent requirements for HVAC, Irrigation, OEM,
Commercial and Institutional applications, and wherever positive shut-off is required for
liquids, gases and slurries.
Incorporating a 200 psi (13.8 bars)pressure rating for 2" - 12" (50- 300mm) and a 150 psi (10.3 bars)
pressure rating 14"- 24" (350-600mm), the Series BF is standardly constructed of a cast iron body,
ductile iron, aluminum bronze or 316SS disc and 416SS shaft. A phenolic-backed seat prevents the
seat from collapsing or dislodging and can be replaced in the field. Standard seat materials available
include Buna-N and EPDM. In addition to the above features, the Series BF mounting pad design
can easily accommodate a lever handle, gear operator, and electric or pneumatic actuators.
The Watts Series BF butterfly valves are designed and manufactured for use with ANSI 125 or 150
Class flanges and to comply with API 609 and MSS-SP-67. Features:
HANDLE - Ten-position handle is standard. An infinate positioning/locking handle is available as
an option on valve sizes 2" through 12" (50-300mm). The infinite position Pos-Lok throttle plate
incorporates an infinite-position stop, a memory stop and a padlocking device in the fully closed
position. Manual, worm-gear operators are available for all valves and are recommended on 8"
thru 24" (200-600mm) sizes. Watts butterfly valves are also available with electric or pneumatic
actuators and chain wheel operators to satisfy a wide variety of requirements.
SHAFT - One-piece shaft delivers positive disc-to-seat location with maximum strength. 416SS is
standard with aluminum bronze and ductile iron discs, and 316SS shaft with 316 stainless steel disc.
SHAFT BUSHINGS - Duralon bushings (3) provide shaft support for proper shaft alignment and
minimize shaft deflection. 2 SHAFT SEAL - Bidirectional shaft seal prevents external contamination of
stem area and provides backup for the primary shaft seal formed by the disc/seat interface.
BODY - Watts Butterfly Valves are available in Full Lug (BF-03-M2) and Wafer (BF-04-M2) type
designed for use between ANSI 125 and 150 flanges. Face-to-face dimensions comply with API 609
and MSS-SP-67. All valves are designed to accommodate 2" of insulation. The standard material is
ASTM A126 Class B cast iron.
DISC - Disc edge is machined and polished 360 to assure leak-tight shutoff while minimizing
operating torque. Positive, disc-to-shaft connection is provided by stainless steel precision taper
pins that are vibration proof.
SEAT - Phenolic backed, non-collapsible, resilient seat is mechanically secured to provide
dead-end service to the full 200 psi (13.8 bars) pressure rating. Seat face eliminates the need for
flange gaskets. Full 360 sealing isolates the body components from the media and provides the
primary shaft seal. Available in EPDM and Buna-N. Seat is field replaceable.