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The Master Lock No. S3920 Butterfly Valve Lockout Device locks out virtually any butterfly valve in just seconds with use of S806 adjustable locking cable. The easy-to-use wedge-shaped device features a stainless steel rivet allowing device to smoothly pivot open and closed to ensure proper fit and directional application arrows allow for ease of installation and minimize error. Made of durable, lightweight Zenex™ thermoplastic material, device is chemical resistant and performs effectively in extreme environments.

  • Adjustable Butterfly Valve Lockout
  • Locks out valve in seconds by feeding S806 cable lockout device through desired eyelet and around valve neck
  • Durable, lightweight thermoplastic material is chemical resistant and performs effectively in extreme environments
  • Directional application arrows allow for ease of installation and minimize user error
  • Stainless steel rivet allows device to smoothly pivot open and closed to ensure proper fit