Why do Oxygen valves require degreasing?

butterfly valve installation guidelines

hydraulic butterfly valve

butterfly valve with gearbox

Grease will react with gaseous or liquid oxygen and catch fire at a certain pressure and temperature. The reaction of grease with oxygen can cause combustion or explosion. Because of these potential hazards, process system design and control valve material selection are important. Oxygen Service has many hazards that require the careful and knowledgeable design of the handling system. Plastic gloves are required for handling oxygen valves.