Page
14
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For GripSafe
®
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FRM-22.1-Rev.H-SMDBB
8.
Removal
of GripSafe
ST DBB Plug
8.1 Depressurize system through hydrotest pump’s bleed off valve.
8.2 Remove hydrotest equipment from the
Swivel Pipe Union Fitting(3)
.
8.3 Ensure there is no backpressure on the GripSafe ST DBB plug.
8.4 Loosen the
Compression Hex Nut(21)
.
•
Once the seal has broken free from the pipe’s inner diameter water may flow out
from the pipe, be prepared to capture this if desired. Continue loosening the
Compression Hex Nut(21)
until the
Wedge Grippers(16)
are fully relaxed.
8.5 Remove the GripSafe ST DBB plug from the pipe.
•
Clean and store for later use or return to USA Industries.
•
Wedge Grippers(16)
texture may become plugged with pipe scale and rust
through several uses of the plug. Inspection of this surface after each use is
necessary to keep the gripping strength at peak performance. To clean, simply use
mild dishwashing soap and a stiff stainless steel bristled brush such as a welding
brush. If plugging is persistent, use of a household rust remover along with a stiff
stainless steel bristled brush should be sufficient. Rinse plug clean of any residual
chemicals with tap water and dry thoroughly.
•
Inspect
Wedge Grippers’(16)
freedom of motion. Each
Wedge Gripper(16)
should slide freely up and down in its slot with a full range of motion and without
resistance.
•
Store out of direct sunlight in an area not exposed to above 150° F, UV light and
excessive heat will cause
Seal(14)
degradation over time.
NOTE:
Use caution to ensure the
Swivel Pipe Union Fitting(3)
does not become
unthreaded or loosened during removal of the hydrotesting equipment when testing is
complete. Failure to do so may cause leaks when the plug is used again. Use
appropriately fixed size wrenches, not adjustable wrenches.
CAUTION:
SLOWLY
open
Vent Port(22)
to relieve any back pressure. Care must be
taken when opening valves or loosening fittings if any inadvertent backpressure was
introduced to the vessel. Failure to do so may result in hazardous pressure flow and/or
fittings becoming violently hazardous projectiles that may cause injury to personnel and
damage to equipment. If utilizing a backpressure monitoring tee, fast flowing gases or
liquids through hosing can cause hose whip. Take caution to avoid this, failure to do so
may result in injury to personnel and damage to equipment.
NOTE:
Do not remove the
Compression Nut(21)
from the
Shaft(1)
. If this happens,
immediately reinstall the component.
