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Resilient Seated Butterfly Valves BG Series DESCRIPTION
The KF Series BG resilient seated butterfly valve is available in sizes 2" thru 36", wafer or lug style body design. These Butterfly Valves were designed to meet the stringent requirements for Oil & Gas and Industrial applications, or wherever positive shut-off is required for liquids, gases and slurries. The KF Series BG butterfly valves are designed and manufactured for use with ANSI 125 or 150 Class flanges and to comply with API 609 (except for the 16"-20" face-toface dimension). All valves are seat-tested at 110% of rated pressure.
FEATURES • Nameplate is permanently attached providing disc, seat, and shaft material specifications for quick reference.
• Disc is attached to shaft by precision taper pins minimizing flow turbulence, resulting in higher Cv ratings.
• All BG Lug Style Valves are suitable for Bi-Directional Dead End Service at full rated pressure.
• Disc edge is machined and polished 360° to assure leak-proof positive shut-off while minimizing torque.
• Phenolic Backed Seat provides additional support making it non- collapsible. No flange gaskets needed. 360° sealing protects components from media and provides primary shaft seal. Available in Buna N and Viton®.
• ISO 5211 Mounting Pad designed for easy adaptation of pneumatic or electric actuators, gear operators and handles. (2"-10" direct mountable)
• Available in Lug and Wafer styles. For use between ANSI 125 and 150 flanges. Face-to-Face dimensions of 2"-14" and 24" valves comply with API 609 and MSS SP67. Valves are designed to accommodate 2" of insulation. Standard body material is A536 65- 45-12 Ductile Iron.
• The bi-directional shaft seal prevents external contamination of stem area while providing back-up for the primary shaft seal formed by the disc/seat interface.