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GROTH CORPORATION
PRESSURE/VACUUM RELIEF VALVE
The
pressure/vacuum valve is a protection device mounted on a nozzle opening on
the top of a fixed roof atmospheric storage tank. Its primary purpose is to
protect the tank against rupturing or imploding. Without an opening or a
controlled opening, a fixed roof atmospheric tank would rupture under
increasing pressure caused by pumping liquid into the tank or as a result of
vapor pressure changes caused by severe thermal changes. Imploding, or the
collapsing of a tank, occurs during the pumping out procedure or thermal
changes.
FLAME/DETONATION ARRESTERS
Flame arresters are fire safety
devices. They prevent flames from entering a tank and also provide
protection from flashes within a tank. They can also be used as an in-line
flashback prevention device.
Vapor
Emission Reduction
GAS BLANKETING
The
Groth Blanket Gas Regulator ensures that a constant gas pressure is
maintained in the vapor space of a storage tank. When liquid is removed from
a tank or the temperature is reduced, a vacuum would be developed. With the
Groth Blanket Gas Regulator, a blanket gas is supplied to prevent any vacuum
from developing and to maintain the desired blanket pressure. In addition to
preventing outside air and moisture from entering the storage vessel, a
blanket gas pressure, as low as 1/2" W.C., reduces the evaporation of the
stored product to a negligible amount. The result would not only conserve
product but would also greatly reduce emissions. The advantages are in
addition to the fire protection that is provided.
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