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Butterfly Valves

A butterfly valve is used for the flow regulation in pipes with large diameters. Operation is similar to a ball valve in that it takes just one-quarter turn of the handle from fail open to fail close. A plate or disc is in the center of the pipe and has a shaft passing through it that is connected to a ten-position lever handle, gear-operated handwheel, or an actuator on the outside of the valve. Rotating the handle turns the disc either parallel or perpendicular to the flow. The disc is always present within the flow; thus, some pressure drop is always induced in the flow, regardless of valve position.

What are the Advantages of Butterfly Valves?

  • Can Transfer Mud with Negligible Fluid Deposit
  • Good Seal at Low Pressure
  • Require Less Structural Assistance
  • Lighter Than a Ball Valve
  • Reliable and Affordable
  • Very Precise

BVL Lug Body Butterfly Valve

BVL Lug Body Butterfly Valve

  • Available in Buna-N (standard), EPDM, and Viton® Configurations
  • Fully-Lined Elastomer Seat Provides Complete Isolation of the Process Media
  • 2” Through 24” Body Sizes Available in Class 150 Ratings 
  • Lug Body Design Includes ISO 5211 Mounting Pad for Manual & Automated Operators
  • Threaded Lug Through Holes Allow Valve to be Easily Bolted
  • Elastomer U-Cup Seal Packing Gland Provides Superior Leakage Protection
  • Tested and Inspected to Meet API598 & ISO5208 Standards

 BVW Wafer Body Butterfly Valve

  • Available in Buna-N (standard), EPDM, and Viton® Configurations
  • Fully-Lined Elastomer Seat Provides Complete Isolation of the Process Media
  • 2” Through 24” Body Sizes Available in Class 150 Ratings 
  • Wafer Body Design Includes ISO 5211 Mounting Pad for Manual & Automated Operators
  • Internal-Support Hardware (Discs, braces, and brackets) are Manufactured of Corrosion-Resistant Stainless Steel
  • Elastomer U-cup Seal Packing Gland Provides Superior Leakage Protection
  • Tested and Inspected to Meet API598 & ISO5208 Standards

Complete Engineering Data

For complete engineering data, please download our Butterfly Valves brochure at the following links:

U.S. Valve offers different kinds of butterfly valves. Contact us today to learn more!

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