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  2. Cross-linked polyethylene - Wikipedia

    en.wikipedia.org/wiki/Cross-linked_polyethylene

    A cross-linked polyethylene (PEX) pipe. Cross-linked polyethylene, commonly abbreviated PEX, XPE or XLPE, is a form of polyethylene with cross-links.It is used predominantly in building services pipework systems, hydronic radiant heating and cooling systems, domestic water piping, insulation for high tension (high voltage) electrical cables, and baby play mats.

  3. Operating expense - Wikipedia

    en.wikipedia.org/wiki/Operating_expense

    An operating expense (opex) [a] is an ongoing cost for running a product, business, or system. [1] Its counterpart, a capital expenditure (capex), is the cost of developing or providing non-consumable parts for the product or system.

  4. Plumbing - Wikipedia

    en.wikipedia.org/wiki/Plumbing

    PeX and CPVC tubing also comes in rigid joints or flexible rolls. The temper of the copper, whether it is a rigid joint or flexible roll, does not affect the sizing. [27] The thicknesses of the water pipe and tube walls can vary. Because piping and tubing are commodities, having a greater wall thickness implies higher initial cost.

  5. Piping and plumbing fitting - Wikipedia

    en.wikipedia.org/wiki/Piping_and_plumbing_fitting

    A plug is a short barbed fitting with a blank end that can only be used with PEX piping to end the continuation of a water line that is no longer in use due to tying in elsewhere within the system or to seal the end of a water line which may be used for future use in the case of additional facilities. All plugs are sealed watertight with a PEX ...

  6. PEX (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Pex_(disambiguation)

    PEX is cross-linked polyethylene, a form of polyethylene with cross-links. PEX or Pex may also refer to: Science and technology. Peer exchange, a method to gather ...

  7. List of business and finance abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_business_and...

    Ke – Is used as an abbreviation for Cost of Equity (COE). Ke is the risk-adjusted, theoretical rate of return on a Company's invested excess capital obtained through external investment s. Among other things, the value of Ke and the Cost of Debt (COD) [ 6 ] enables management to arbitrate different forms of short and long term financing for ...