Safely Use Methyl Mercaptan (CH3SH) with Powell Emergency Gas Shut Off Valve Closure Systems

Shut Off Systems for Hazardous Gases Such as Methyl Mercaptan (CH₃SH)

About Methyl Mercaptan

Often referred to as ‘MESH’, Methyl Mercaptan is a very toxic and colorless flammable gas that gives off a repulsive odor. Upon inhalation or contact it attacks the central nervous system and can be lethal. It is used in organic synthesis and is an intermediate for jet fuel additives, fungicides, and methionine.

At standard temperature and pressure, it exists as a gas. Its molecular weight is 1.66 times that of oxygen. MESH is shipped under its own vapor pressure of 15 psig @ 21.1°C in sealed tanks and ton containers. Railroad tank cars carrying MESH usually have top loading ball valves.

Prevent Accidental Release of Methyl Mercaptan

Powell's Emergency Gas Shut Off Valve Closure Systems are designed to prevent significant releases of hazardous gases like Methyl Mercaptan. 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.

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Powell Valve Closure Matrix

Powell offers emergency valve closure systems with pneumatic or electric actuators for use on either small containers (150 lb - 1 Ton) or large containers (such as 90-Ton railcars). For more information about the valve closure system that will work in your application, reference the following matrix: