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Butterfy Valves

B51 Series Industrial Butterfly alves

Product Specific tions

Features:
• wafer and lug type body
• cast iron body with extended neck
• nickel plated ductile iron disc
• seat backing ring ensures blowout proof service
• installs between Standard ANSI Class 150# fanges
• conforms to MSS SP-67 MSS SP-25, API-609
• no taper pins
• feld repairable (seat kits available)
• undercut available
• EPDM seat
• maximum pressure 200 PSI (bi-directional)
• temperature range: -20°F to 250°F (depending upon seat
material)
• wide variety of seat, disc and body materials available
• additional sizes available
• various manual or automatic operators available
Lug Butterfy Valve Wafer Butterfy Valve

Valve Seating Torque (in. lbs.)
Standard Disc at Pressure Differential (ΔP)
Size
50 ΔP 100 ΔP 150 ΔP 200 ΔP
1½" 80 95 100 105
2" 99 105 110 116
2½" 146 160 172 186
3" 198 206 230 240
4" 250 300 340 380
5" 420 470 520 580
6" 600 690 782 873
8" 960 1100 1280 1410
10" 1590 1790 2000 2180
12" 2390 2600 3011 2313

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