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construction of pressure relief valves include
a screwed cap. However, a wide variety of cap
styles are available, at extra charge, to meet
the most rigid requirements. A lifting mechanism
is recommended to test for correct valve operation
at all times where corrosion, caking or any deposit
could prevent the opening operation of the pressure
relief valve. Foreign particles will often lodge
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under
the seats of the valve when it discharges. The
ability to lift the valve immediately and flush
the obstruction may prevent damage and eliminate
possible shutdown of the unit. Pressure relief
valves for Section III & VIII require a lift
lever on all air, steam, and hot water valves
(over 140°F, 60°C). |
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This design type is suitable
where periodic testing of the valve in location
is desired to assure its operation. When the
valve discharges, the fluid media will escape
to atmosphere around the plain lever assembly.
This cap is not recommended where back pressure
is present, or the escape of vapors to atmosphere
is undesirable.
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This design type should be selected
where leakage of the media to the atmosphere
during valve discharge or when subject to a
back pressure would present a hazardous condition.
This packed lever design is a completely sealed
assembly to prevent any leakage.
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Consult CSI International Inc.
for dimensions.
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Designed to facilitate systems
where valves are installed in remote locations
such as by-pass, the valve operation indicator
provides an immediate knowledge of remote operation.
This design employs a limit switch (explosion-proof
type is also available) that mounts to any cap
arrangement through wiring to a panel at a selected
location. An alarm, light or other warning device
signals the opening and reclosure of the safety
relief valve.
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Preferred by those who consider
the bolted and gasketed design superior to the
standard screwed cap for applications with back
pressure and/or vibration.
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Bolt on steam jacket for preserving
valve temperature in body. For use on fluids
to .
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prevent solidification of the
flowing viscous fluids. Consult factory for
details
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