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Mates
up with standard flanges
Useful
for hundreds of applications, PLIDCO+Flanges are particularly valuable
for making tie-in connections for prefabricated expansion and rework
projects.
PLIDCO+Flanges are easy to install. There are no problems installing
them in hard to get at locations such as high overhead piping, conduits
and tunnels, tight manifolds or in hazardous locations. No special
preparation of pipe ends is necessary. Simply cut the pipe and slide the
PLIDCO+Flange onto the pipe until the end of the pipe is within
approximately 1 inch of the flange face. After the connecting mating
pipe with flange is brought into place, rotate PLIDCO+Flange, and/or
mating pipe, until flange bolt holes on the two flanges line up. Several
flange bolts may be inserted to assist with the alignment.
Advance the clamp screws in order to center the PLIDCO+Flange on the
pipe. Tighten flange bolts to their specified torque. Tighten all
clamping screws per installation instructions. Tightening end thrust
screws (A) causes steel thrust ring (B) to move forward and squeeze
packing ring (C) against the pipe. This assures a pressure-tight seal.
Installation is complete unless welding is specified. Before
repressuring line, note allowable working pressure, prior to welding, in
table below.
If welding is specified, pipeline is put in operation. Refer to the
chart below for recommended pressures. Thrust screws are cut/burned off
flush. End of coupling is fillet-welded around circumference, including
seal-welding of thrust screws. Clamping screws are cut/burned off and
seal-welded.
Welders should be qualified in accordance with the requirements of API
Standard RP 1107, Latest Edition. |
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