For the Control of Pipe Expansion &
Contraction in
Water &
Steam Systems
The heavy duty Keflex™ 7Q Expansion Compensators are specifically designed for high pressure
service, available in sizes ¾” to 4”, in both single and dual units. The single type is capable of absorbing 2”
total movement, 1 ½” in compression and ½” in extension from the factory predetermined setting. The dual type is capable of absorbing 4" total movement, 3" in compression and 1" in extension from the factory pre-determined setting.
The heart of the Keflex™ 7Q Expansion Compensator is the multi-ply type 316L corrosion resistant
stainless steel bellows. These bellows are internally pressurized and operate primarily in compression
where they have the greatest hoop strength capability.
The Quadra-Side® square telescoping shrouds encompass the bellows to provide protection against
torsion, squirm, misalignment, and external damage, as well as preventing over compression of the
bellows. Additionally, the unique design provides visual evidence that the traverse of the unit has not been
exceeded. The integral guiding feature of the Quadra-Side® prevents offset to assure the pipe movement
is directed axially into the bellows, a requirement for optimum performance.
The square telescopic shroud does not serve as a chamber to contain liquid or gas as do the covers on
some other high pressure “compensators”. Therefore, the outside diameter of the Quadra-Side® type
compensator is considerably smaller, permitting it to be installed in walls, under floors or behind radiator
covers without expensive modifications at the point of installation. |
Submittals