LINE BLIND

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

Quick Action Line Blinds Save Time and Money

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 (1/2” through 48” though we can customize up to 52")

• 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 with manually or with handwheel

• No pipe stress as the spectacle plate moves into position

• No pipe sag or misalignment from spreading

• Single person operation

700 series (spreading design)
The original design for line blinds. Depending on the size, 3 to 7 jack bolts are turned to create space, spread the pipe, and rotate the spectacle plate into position.

Features

• No tools needed for operation

• Cost-effective design

• Excellent for high pressure/extreme temperature applications

• Single person operation