Line blinds are safety devices designed for positive shut-off of piping, equipment or storage tanks where positive shut-off is defined as a device in a closed, drop-tight, verifiable and maintainable position. This positive shut-off feature makes line blinds perfectly attuned for permanent or long-term piping system isolation and shutdown.

Advantages of line blinds

  • Quickly isolates lines compared to spectacle blinds
  • Saves money on labor and equipment when isolating systems
  • Zero-leakage compared to some isolation valves

Strahman line blinds

Strahman’s American-made line blinds come in a variety of configurations and are customizable to meet just about any application. Learn more...

Product options

  • Cryogenic series
  • Broad size range (.5–84 in.)
  • Body materials (CS and SS are standard)
  • ANSI flanged, butt-welded or DIN flanged end connections
  • Variety of seals
  • Automated models
  • Non-spill style
  • Position feedback
  • 760 and 740 series (non-spreading design)
  • Non-spreading line blinds use a cam system to create space between the body flanges for the spectacle plate to slide or rotate into position and seal

Features

  • Safe and effortless operation, manually or with handwheel
  • No pipe stress as the spectacle plate moves into position
  • No pipe sag or misalignment from spreading
  • Single-person operation