POWER April 2016 - 90

FLUID SEALING SPECIAL ADVERTISING SECTION
Global experience in expansion joint solutions
EagleBurgmann Expansion Joint Solutions serves the power generation industry through
its 60 subsidiaries and 250 production and service facilities worldwide
agleBurgmann Expansion Joint
Solutions is a leading global organization
in the development of expansion joint
and sealing technology; working to meet
the challenges of today's ever-changing
environmental, quality and productivity
demands. With 60 subsidiaries and 250
production and service facilities worldwide,
EagleBurgmann offers reliable and safe solutions
and service for power generation
equipment including turbine exhaust systems,
HRSG boilers, high pressure crossover
piping, pumps, agitators, compressors
and valves.
EagleBurgmann is an active member
of the Expansion Joint Manufacturers'
Association and Fluid Sealing Association,
working with other industry leaders to develop
new technology that improves product
design and materials for their users. As
part of the EagleBurgmann Group, more
than 6,000 employees contribute ideas, solutions
and commitment to support customers
worldwide.
E
eagleburgmann-ej.com
eagleburgmann.com
EagleBurgmann Field Service Team supports its customers in power generation and
refining with turnkey services including inspections, installation and emergency support
Expansion joints with ASME B16.47 Series B flanges
Proco Products explains two ways to accommodate ASME B16.47 Series B flange drilling
when specifying rubber expansion joints
" P
iping system designers: Have you
ever come across the need to supply
rubber expansion joints/control units
in a piping system where the flanges have
ASME B16.47 Series B drilling? " asks Proco
Products. " If so, you will know that the
conventional control rod setup can be challenging,
since the attachment area for a
traditional triangular control rod plate
is greatly reduced. " This is because with
Series B drilling the bolt circle for the flange
is closer to the O.D. of the pipe than it is for
Series A drilling, Proco explains.
For example, say a designer has an application
for a 30 in. I.D. X 24 in. OAL triplearch
rubber expansion joint, where one end
has ASME B16.47 Series A drilling and the
other end has ASME B16.47 Series B drilling.
Control rods are used in this example
as the piping system is unrestrained.
For ASME B16.47 Series B drilling, the
best rubber expansion joint design is an
" interior tie rod " type. This uses a thicker
ring/rod plate to connect the expansion
joint to the adjacent mating flange, while
connecting rods control the thrust loads
and movement of the expansion joint under
pressure. This design eliminates the compli(Left)
Interior tie rod rubber
expansion joint design for ASME
B16.47 Series B flange connection
90
www.powermag.com
Exterior control unit design
POWER | April 2016
cation of a traditional control rod setup on
the back side of the mating flange, where
clearance of the I.D. of the control rod plate
aligning with the mating flange holes becomes
difficult (illustration, left).
The only other option when dealing with
ASME B16.47 is a control rod setup with
thick fabricated split flange plates, so that
the resultant thrust loads from the rubber
expansion joints are evenly distributed to
every bolt hole (photo, below). However,
the " interior tie rod " configuration is preferred.
www.procoproducts.com
http://www.eagleburgmann-ej.com http://www.eagleburgmann.com http://www.procoproducts.com http://www.powermag.com
POWER April 2016

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