Virtually indestructible valve covers. Once locked, they rotate freely around the hand wheel & prevent the valve wheel from being turned. The b polyurethane plastics make them resistant to cracking and abrasion. They are resistant to extreme weather and temperature conditions. Available in 5 sizes ( Red colour ) Other colours are available on request - minimum quantity applicable. 3 padlock holes are available in each gate valve lockout device. Different sizes cover most commonly used valve diameters. Withstands temperatures from - 20°F to 200°F Unique knockout center accommodates OS & Y or “rising stem” valves. Suitable for hasps and padlocks.