Game - flange guards (Shared from Internet)

Flange guards, also known as flange spray shields, safety spray shields, flange covers, or flange protectors, are protective devices fitted around pipe flanges, valves, joints, and fittings. Their main function is to reduce the risk of hazardous spray-outs when a gasket, seal, or flange joint fails. In industrial piping systems, flanges connect pipes, valves, pumps, and other equipment. However, these joints may leak due to pressure, vibration, corrosion, gasket failure, poor installation, or ageing. When the pipeline carries acids, alkalis, steam, oil, solvents, chlorine, or other hazardous fluids, even a small leak can become dangerous.
http://www.indanasteel.com/p-guards.php