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B51 Series Wafer & Lug Style Butterfly Valves

B51 Series Wafer & Lug Style Butterfly Valves

  • Pneumatically actuated wafer butterfly valve
  • Pneumatically actuated lug butterfly valve
  • Pneumatically actuated wafer butterfly valve Pneumatically actuated lug butterfly valve
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Part Number B51-PNEU
Style Pneumatically Actuated
Material Cast Iron
Component Material Nickel Plated Ductile Iron Disc
Size Wafer: 1 1/2” – 12”,
Lug: 2” – 12”
Maximum Operating Pressure Valve: 200 PSI (bi-directional),
Actuator: 120 PSI
Temperature Range Valve:-20°F to 250°F (-29°C to 121°C),
Actuator:-40°F to 200°F (-40°C to 93°C)

Use

  • Installs between standard ANSI class 150# flanges

Specifications

  • Valve conforms to MSS-SP-67,MSS-SP-25, API-609

Features

  • Valve has a cast iron body with extended neck, a nickel plated ductile iron disk and a replaceable EPDM seat.
  • The valves seat backing ring ensures blow-out proof service.
  • Can be serviced in the field.
  • Rack and Pinion actuator has a hard anodized aluminum body, nickel plated anti-blowout pinion, Buna-N O-rings and NAMUR mounting.
  • Actuator is tested to one million cycles and it features bi-directional stops for ±5º travel adjustment and visual position indication.
  • 80 PSI plant air is required
  • For spring return actuators must note fail position

Available Options

  • A wide variety of options are available: spring return (normally closed) and double acting actuators, switches, solenoids, positioners, etc.

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