Helps to properly lockout valve wheels from 1″ up to 14″ dia. Designed with (2) flattened half-moons that completely cover valve wheel. Made from polypropylene plastic. Fully dielectric and resistance to extreme temperature changes (-50° to 360° F). Resistant to cracking and abrasion. Meets OSHA 29 CRF 1910.147 regulations and ANSI Z353.1
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