Metallic Expansion Joints - Thorburn Flex Inc

THORBURN
FLEXIBLE PIPING SPECIALIST
EXTRA-FLEX MODEL "EFS/EFD"
SINGLE AND DOUBLE EXTERNALLY PRESSURIZED EXPANSION JOINT SYSTEM
EXTRA-FLEX VS EQUALIZING
EXPANSION JOINTS
EXTRA-FLEX VS
SLIP JOINTS
Costly equalizing rings, usually made from gray
cast iron, are an integral part of the design
requirement used by some manufacturers to
achieve pressures exceeding 50 psi. Thorburn
Extra-Flex state-of-the-art computer-aided
technology has eliminated these rings by creating
a bellows which achieves high pressures without
the problems associated with equalizing rings,
metal erosion from ring-to-bellows vibration and
ring failure due to thermal shock; these and other
potentially dangerous and costly situations are
avoided when Extra-Flex is applied.
The vocabulary of slip joint users invariably includes the following terms:
packing, leakage, periodic inspections, continual maintenance, large
vaults, etc. Thorburn Extra-Flex expansion joint has eliminated these
troublesome words from the expansion joint manufacturer's dictionary
and replaced them with more agreeable terms: packless, all-welded
construction, sealed system, leak-free and direct-burial-without-access
vault. Most agreeable is the cost; substantially less than an equivalent
slip joint.
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