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Baker Hughes
© 2020 Baker Hughes Company. All rights reserved.
Safety valves should be stored in a dry environment
to protect them from the weather. They should not be
removed from the skids or crates until immediately
prior to installation. Flange protectors and sealing plugs
should remain installed until just prior to installation.
Safety valves, either crated or uncrated, should never be
subjected to sharp impact. This would be most likely to
occur by bumping or dropping during loading or unloading
from a truck or while moving with a power conveyor, such
as a fork lift truck. The valve, either crated or uncrated,
should always be kept with the inlet down (i.e., never
laid on its side), to prevent misalignment and damage to
internals. Even crated valves should always be lifted with
the inlet down.
Uncrated valves should be moved or hoisted by
wrapping a chain or sling, around the discharge neck,
then around the upper yoke structure, in such manner
as will ensure that the valve is in vertical position during
lift, (i.e., not lifted in horizontal position). Never lift the
full weight of the valve by the lifting lever. Never hook
to the spring to lift. When safety valves are uncrated
and the flange protectors removed, immediately prior
to installation, meticulous care should be exercised to
prevent dirt from entering the outlet port while bolting in
place.
While hoisting to the installation, care should be
exercised to prevent bumping the valve against steel
structures and other objects.
Do not lift valve
horizontally, or hook to
lifting lever or spring.
Prevent dirt from
entering valve outlet
port.
Handle valve carefully.
Do not drop or strike.
VI. Storage and Handling Prior to Installation
The “safety valve” is the final safeguard between a
controlled boiler and a catastrophic explosion. In an
over-pressure situation, the pressure in the valve inlet
increases until the force on the disc exerted by the
system pressure equals the force exerted by the spring.
This causes the safety valve to pop, or lift, relieving the
excess steam until the system pressure is reduced to the
desired level.
Baker Hughes’s Consolidated safety valves have been
a leader in the industry since 1879, thus offering over a
century of experience in the valve industry.
Baker Hughes’s history of dependable and reliable
valve service assures that today’s products and designs
are consistent with industry’s current requirements.
Rigid manufacturing standards controlled by an
ASME-approved Quality Control Program ensure that
each valve will be manufactured in accordance with
established design criteria and tested for functional
performance. This quality controlled manufacturing and
test program assures that each valve manufactured will
provide long and reliable service.
VII. Introduction
