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CPVC Pipes & Fittings{short description of image} Technical Information 1 - 2 - 3
Thermal Expansion
Expansion does NOT vary with pipe size. The stresses developed in CPVC are generally much smaller than those developed in metal systems for equal temperature changes because of significant differences in elastic modulus. Therefore, expansion loop requirements are not significantly different thatn those recommended for copper tubing. Thermal expansion can generally be accommodated at changes in direction. On a long straight run.

Coefficient of Thermal Expansion



Low Bacteria Build up

Important CPVC piping supports the lowest bacterial growth compared with traditional piping materials.
( Kindly, refer to our technical department for any further detailed information ).



Excellent Chemical Resistance



Transitions from ECOTUBE CPVC to Other Materials

Numerous specialty transitions incorporating rubber seals at the plastic-to metal interface are available and should always be used on lines where normal water temperature of 65 ºC or higher are anticipated. Male CPVC threaded adaptors are also available for connecting valves and appurtenances on cold water lines. TFE (Teflon) therad tape is always safe for making CPVC threaded connections. Some paste-type sealants contain solvents that may be damaging to CPVC. If you prefer to use a paste or pipe dope, always check with the manufacturer regarding its compatibility with CPVC. Use of an improper paste or dope can result in failure of CPVC systems.

Hangers and Supports
Because ECOTUBE tubing is rigid, it requires fewer supports than flexible plastic systems. For vertical runs, provide a support at each floor level, plus a mid-story guide. For horizontal runs, support at 90 cm intervals for diameter of 32 mm amd below and at 1.2 m intervals for larger sizes piping should not be anchored tightly to supports, but rather secured with smooth straps or hangers that allow for movement caused by expansion and contraction. Most hangers designed for metal pipes are suitalbe for ECOTUBE Hangers should not have rough or sharp edges which come in contact with the tubing.

This Means that CPVC

  • Needs less hangers and supports.
  • There is no unslightly "looping" of the pipe.
  • Is suitalbe for vertical risers.
  • Has a higher pressure bearing capability.

    This leads to the same flow rate with a smaller pipe size.

Fire Rated Construction


Testing demonstrates that ECOTUBE CPVC meets 25/50 flame spread /smoke developed requirements for installations within plenums. Fire wall penetrations must be sealed with approved materials or devices, such as those listed in the UL Building Materials Directory. Consult the local building official in your area.

Note: For further technical information, please contact Toutounji Plastics Group "TPG".

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