User Manual

ES-BF-03-M2/BF-04-M2
Series BF-04-M2
Wafer
Series BF-03-M2
Full Lug
Series BF-04-M2
Wafer
For HVAC, Irrigation, OEM, Commercial and Institutional Applications
Butterfly Valves
Series BF-03-M2 Full Lug
and BF-04-M2 Wafer
Sizes: 2" – 12" (50 – 300mm)** 200psi (13.8 bar)
14" – 24" (350 – 600mm)** 150psi (10.3 bar)
Watts Series BF resilient seated butterfly valve is available in
sizes 2" – 24" (50 – 600mm)** in wafer or lug body design.
Incorporating a 200psi (13.8 bar) pressure rating for 2" – 12"
(50 – 300mm)** and a 150psi (10.3 bar) pressure rating
14" – 24" (350 – 600mm)**, the BF series butterfly is standardly
constructed of a ductile iron body with a choice of either ductile
iron, aluminum bronze, or 316 stainless steel discs and 416
stainless steel or 316 stainless steel shaft. A phenolic-backed
seat (2"-12", 50-300mm)** or aluminum-backed seat (14" – 24",
350-600mm)** prevents the seat from collapsing or dislodging.
Standard seat materials available include EPDM, Buna-N and
Viton. The BF Series mounting pad is designed to ISO 5211
standard to accommodate lever handles, gear operators, or
actuation.
The Watts Series BF butterfly valves are designed and manufac-
tured for use with ANSI 125 or 150 Class flanges and comply
with API 609 and MSS-SP 67 standards to meet the stringent
requirements of HVAC, Irrigation, OEM, Commercial, Institution-
al, and Industrial applications.
Features
• Body – Available in Full Lug (BF-03-M2) and Wafer (BF-04-M2)
styles 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 insula-
tion. The mounting pad is designed to ISO 5211 standard.
The body material is ASTM A-536 ductile iron.
• Disc – Disc edge is machined and polished 360 degrees to
assure leak-tight shutoff while minimizing operating torque.
Positive, disc-to-shaft connection is provided by stainless steel
precision taper pins. Discs are available in ductile iron, alumi-
num bronze, or 316 stainless steel.
• Seat – Phenolic or aluminum backed, non-collapsible, resilient
seat is mechanically secured to allow for dead-end service
usage to the full pressure rating in lug style valves. Full 360
degrees sealing isolates the body components from the media
and provides the primary shaft seal. Seats are available in
EPDM, Buna-N, and Viton.
• Shaft – One-piece shaft delivers positive disc-to-seat location
with maximum strength. 416SS is standard shaft with ductile
iron and aluminum bronze disc. 316SS shaft is standard with
316SS disc models.
Three shaft bushings provide shaft support for proper align-
ment and minimal shaft deflection. Bi-directional shaft seals
prevent external contamination of the stem area and provide
backup for the primary shaft seal formed by the disc/seat
interface.
• Handle – ISO 5211 top work design allows for standard 10
position handle 2" – 6" (50 – 150mm)** and manual, worm
gear operators for 8" – 24" (200 – 600mm)** sizes. An infinite
positioning locking handle is an available option on 2" – 12"
(50 – 300mm)** valves. The posi-lok handle provides an infinite
position stop, a memory stop, and a pad-locking device in the
fully closed position.
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Approval
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Engineer
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LEAD FREE
*
*The wetted surface of this product contacted by consumable water
contains less than 0.25% of lead by weight.
**Metric Dimensions are nominal pipe diameter. This product is
produced with ASME/ANSI flanged end connections.
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please
contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior
notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.