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Shut Off Systems for Hazardous Gases Such as Propane (C3H8)About PropanePropane is a member of the family of liquefied petroleum gases (LPG). It is a colorless, flammable gas with a skunk-like odor at standard temperature and pressure. It is a liquid when stored under its own pressure and flashes to a gas immediately upon release to the atmosphere. It is an asphyxiant and can exhibit anesthetic properties at high concentrations. Continued inhalation can lead to nausea and death. Prolonged contact with evaporating liquid can cause localized freezing and frostbite. Propane is transported in pressurized containers and tank cars using angle plug valves. Propane Valve Closure Systems (Shutdown Systems)Powell Emergency Valve Closure Systems are designed to prevent significant releases of hazardous gases like propane. In the case of an accidental release, the emergency valve closure system will close the valves in 10 seconds or less, effectively preventing further release from the container. Back to List of Hazardous Gases Shutdown Systems for Various Container Sizes Powell is the only manufacturer to offer both pneumatic or electric systems for both small to large container sizes.
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