Rotating Gate Valve Fits Handwheel Each Rotating Gate Valve is manufactured from tough lightweight dielectric Xenoy thermoplastic meaning these rotational valve covers can withstand extreme conditions, temperature range -46°C to 177°C Outward/Inward rotation allows for easier installation & storage Surrounds the valve handwheel to protect against accidental operation 5 sizes available, each size nests within the next larger size for easy storage Supplied with “Do Not Operate” warning message