The Master Lock Blind Flange Lockout device is a physical, best practice solution for pipeline maintenance. The adjustable cup allows for a secure fit that conceals and locks out access to nuts holding a blind in place. Workers can perform maintenance with confidence that the blind they placed on a pipeline will not be removed until all workers have removed their padlocks. 4 locking holes allow for multiple workers to lockout device at one time.
Accepts Shackle Diameter up to 9/32in (7mm)
Small (Model: S3922): nut diameter from 3/4in to 1-1/8in (19mm – 28.7mm)
Medium (Model: S3923): nut diameter from 1-5/16in to 1-7/8in (33.3mm – 47.8mm)
Large (Model: 3924): nut diameter from 2in to 2-3/4in (52.3mm – 69.9mm)
Also known as Masterlock S3922 S3923 S3924 or Master lock S3922 S3923 S3924