Extra Long Pipe
40-foot pipe lengths - for replacing two 20-foot lengths and their
40-foot (12.2m) sections are especially useful for transfer lines
and other long, straight runs. They are available in swaged PTFE, PP, and
PVDF-lined pipe in 1½" - 6" (40mm - 150mm) sizes, and in PFA-lined pipe
in 1½" - 2" (40mm - 50mm) sizes.
Plastic-lined pipe that is loose-lined or reverse-swaged (where the
liner is compressed then inserted into a steel shell where it expands)
has been - and still is - limited in length to 20 feet (6.1m). This
is based on the ability of the transitional flare radius (that portion
of the plastic liner that is flared over the flange face to form a
gasket) to withstand the stress loads of thermal cycling.
Resistoflex uses an exclusive picking and swaging manufacturing process
where the steel shell is compressed down upon the liner. This locks
the liner in place to inhibit differential movement of the liner
during temperature cycling. This process allows Resistoflex to offer
40-foot (12.2m) sections.
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