Warn your employees to not open this valve by implementing this lockout tag. Tag is 6"H x 3"W, available in flexible plastic:

• Flexible Plastic – Semi-flexible, lightweight 0.023” polyethylene plastic material with a 9/32” nickel plated grommet. UV-resistant, chemically inert, corrosion resistant, and exhibits good impact and scratch resistance for both indoor and outdoor use. Material consists of 50% post-consumer recycled material. Service temperature range of -90°F to 168°F.