Master Lock S3921 Butterfly Valve Lockout Device and S806CBL3 Adjustable locking cable 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.
