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Installation
SUGGESTED INSTALLATION AS PUMP CONNECTORS |

End Suction Vertical Discharge Pump
Pump is solid mounted
Pipe is anchored to support it and to stabilize bellows flanges farthest
from pump. Use "H-frame" anchor for vertical discharge and pipe leg
anchor for horizontal suction piping. |
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End Suction Vertical Discharge Pump
Pump is mounted on spring-supported inertia block
Discharge and suction piping have been arranged to be parallel with
drive shaft of pump. Locating flexible coupling further away from pump
minimizes strain from misalignment or angular deflection. |

Double Suction Split Case Pump Solid Mounted
Flexible connectors in vertical lines
"H-frame" supports contain end thrust and prevent lateral motion that
might cause excessive misalignment. Anchors are welded to pipe before
installation of bellows. Weight of pipe should not compress the bellows. |
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Double suction Split Case Pump Solid Mounted
Flexible couplings in horizontal lines
Similar to Plate 3 except anchors are located at 90° elbows where piping
changes from horizontal to vertical. Flanges farthest from pump are
stabalized. Design prevents excessive misaligment or angular deflection.
Pipe-leg anchor and floor flange must be designed to withstand the forces
and movements imposed on it by the piping system. |
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SUGGESTED INSTALLATION AS EXPANSION JOINTS

Typical Piping Layout
Procedures and practices for bellows expansion joint applications include
installation of anchors and guides in accordance with EJMA standards. |
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EXPANSION JOINTS INSTALLATION INSTRUCTIONS
- Do not bore out threads in bolt holes.
- Do not exceed pressure/temperature ratings.
- Safeguard units in hazardous service.
(See below)
- Follow sound installation procedures. A typical reference
in the "Piping Handbook" by Crocker & King published by McGraw-Hill.
- Leave limit bolts in "as received" factory settings. Severe
damage can result if the limit bolts and stop nuts are removed, replaced
or altered to exceed the factory setting. (See below)
- Remove flange covers only when ready to install bellows.
- Insure that sealing faces are clean, smooth & parallel.
- For hot service install nearly extended; for cold service install
nearly compressed.
- Thread installation bolt from mating flange side to prevent possible
damage to the TFE element. Do not extend bolts behind expansion joint flange
more than 1-2 threads. Nut not necessary.
Additional information & specific bolt torque data will be found on
the detailed installation instruction sheet included in the box of each
& every unit shippped.
WARNING: Failure to follow the above installation instructions may
cause premature failure and/or rupture of the unit resulting in property
damage, serious personal injury or death. |
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USE OF INTERNAL SLEEVES IN EXPANSION JOINTS
Certain abrasive applications, such as slurries, or high velocity flow
rates may damage the inside surfaces of the bellows convolutes or the
radius surface at the end flares. In such circumstances a nozzle liner
may be factory installed in the up-stream side (inlet) of the bellows
to help protect the unit or smooth out the flow. While such liners may
greatly extend useful service life of the bellows, they will restrict
movement unless all deflection is confined to straight axial compression
and/or extension. Unless other wise specified, overall length is 6".
Available for use with bellows units through 8" sizes. |
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SAFEGUARDING
The Chemical Plant and Petroleum Refinery Pressure Piping Code, ANSI/ASME
B31.3, in Appendix G outlines recommendations for safeguarding piping
systems. Resistoflex subscribes to this emphasis on safety and endorses
the code suggestion for shielding bellows units where hazardous fluids
are conveyed. Information on wrap-around
safety shields. |
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LIMIT BOLT
Limit bolts with elastic stop nuts are factory set at the maximum travel
position to prevent overextension. Severe damage or personal injury
can result if the limit bolts and stop nuts are removed or altered to
exceed the factory setting, or if non-locking nuts are installed. |