Wafer/Lug1"- 20" (25mm-500mm) SERIES 20/21 SANITARY AND CHEMICAL / RESILIENT SEATED BUTTERFLY VALVES >

DISC / STEM ( A ) STEM BUSHING ( B ) 1"20" (25mm֖500mm) Bray Controls is proud to offer a high quality line of butterfly valves to meet the stringent requirements of todays appli- cations. The Series 20/21 valve not only surpasses the high standards required in sanitary valve applications, but it also has unique inherent flow characteristics and capabilities. For High Performance in butterfly valve flow control, choose the ғEngineers Valve.Ҕ B DC J F > SERIES 20 One-piece design. The disc edge is spherically machined and hand polished to produce a bubble- tight shut off, minimum torque, and longer...

See chart for Actuator Mounting Flange Drilling. > Valve Size > Mounting Flange Drig. ins mm >

Cv VALUESVALVE SIZING COEFFICIENT FLANGE REQUIREMENTS Bray valves are designed for installation between ANSI Class 125/150 lb. weld-neck or slip- on flanges, BS 10 Tables D & E, BS 4504 NP10/16, DIN ND 10/16, AS 2129 and JIS 10, either flat faced or raised faced. While weld-neck flanges are recom- mended, Bray has specifically designed its valve seat to work with slip-on flanges, thus eliminating common failures of other butterfly valve designs. When using raised face flanges be sure to properly align valve and flange. Type C stub-end flanges are not recommended. > Valve Size Disc Position (degrees)...

1"-12" One Piece (Investment Cast) All Metal > ׮ s C-22 per ASTM B494 Type CX2MW 14"-20" (Fabricated) Stem 316 Stainless Steel per ASTM A276 s Stem Buna-N 17-4 ph Stainless Steel per ASTM A564 Type 630 Heat Treated s PTFE Molded 2"-12" PTFE molded over One Piece Stainless Steel insert (Investment Cast) 17-4 ph Stainless Steel per ASTM A747 Type CB7Cu-1 Heat Treated Halar > ֮ Type CB7Cu-1 Heat Treated14"-20" Material molded over Stainless Steel insert (Fabricated) C-276 ASTM B575 Alloy N10276 Stem Hastelloy > s s C-276 ASTM B575 Alloy N10276 > SPECIFICATIONS Rubber Molded Type CB7Cu-1 Heat Treated...

DISTRIBUTOR Disc in the Near Closed Position All statements, technical information, and recom-mendations in this bulletin are for general use only. Consult Bray representatives or factory for the specific requirements and material selection for your intended application. The right to change or modify product design or product without prior notice is reserved. Disc in the Partially Open PositionDisc in the Full Open Position > A Division of BRAY INTERNATIONAL, Inc.13333 Westland East Blvd. Houston, Texas 77041 281.894.5454 FAX 281.894.9499 www.bray.com Patents applied for in U.S. and foreign countries.Bray...