87, 88
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Models: 87, 88 Ductile Iron Wafer and Full Lug Butterfly Valves Sizes: 2" – 24" (25 – 60mm) Pressure Non-Shock Model Size Typical Service These soft-seated butterfly valves are designed for a variety of general applications in the control of water, air, oil, gases, and corrosive media. They are equally effective for on-off, throttling, or isolation service requirements. Lug style valves are designed for dead-end service to the full pressure rating of the valve. Models 87 and 88 butterfly valves are especially well suited for higher velocity service and vacuum service. • henolic backed (2" – 14"), aluminum backed (16" – 24"), P • on-collapsible, resilient elastomer seat. Available in EPDM or Buna-N. N Max. temp. can be limited by seat material. Consult Factory. • SO 5211 mount is standard. Double D shaft is standard 2" – 10" while keyway design is supI plied 12" – 24" Not Recommended for Steam Service. • tem is a one-piece design for maximum strength and is retained in valve body for blowout S proof operation. 416SS stem is standard with aluminum bronze or ductile iron discs. 316SS is standard for 316SS discs (2" – 12") and 431SS is standard for 316SS discs (14" – 24") • tem bushings provide shaft support for proper stem alignment and minimize stem deflecS tion. Duralon bushings are standard material in 2" – 12" sizes. Bronze bushings are standard in 14" – 24" sizes. • tem seals prevent external contamination of stem area and provide backup for the primary S shaft seal formed by the disc/seat interface. • STM-A-536 ductile iron body available in full lug (Model 88) or wafer (Model 87) designed A for use between ANSI 125 and 150 flanges. Face-to-face dimension comply with API 609 and MSS-SP-67. • vailable in standard 10-position locking handle or optional infinite positioning locking A handle. Also gear operators are available 2" – 24". Contact the factory for electric or pneumatic actuation. Performance Guidelines Guidelines for throttling service: Liquids – Line velocity should not exceed 20ft./sec. Gases – Line velocity should not exceed 15,000 ft./min. Materials MODEL 87, MODEL 88 Body Stem Disc Ductile Iron 416SS, 316SS, 431SS Ductile Iron, Aluminum Bronze, 316SS EPDM - 5ºF to 250ºF (-15ºC to +121ºC) Seat Buna-N - 14ºF to 176ºF (-10ºC to +80ºC) Note: Do not use EPDM when hydrocarbons are present NOTICE The information contained herein is not intended to replace the full product installation and safety information available or the experience of a trained product installer. You are required to thoroughly read all installation instructions and product safety information before beginning the installation of this product.

Dimensions and Weights 2" through 24" (4) "O" Diameter of holes on the "N" bolt circle 45° off center. †Weights are for valves with ductile iron or aluminum bronze discs. 2" – 12" have levers; 14" – 24" have bare shafts. Refer to Watts F-CDBF for gear operator weights. Adjustable Stops (Set Screws) GEAR DIMENSIONS: STD. WEATHERPROOF W/ HANDWHEEL CV RATING (Full Open) Mueller Steam Specialty product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Mueller Steam Specialty Technical Service. Mueller...