Unbeatable hydraulic properties
  • Hydraulic Design

    Whether designing a pressurized or a gravity pipe system, the selection of the dimensions of the fit-for-purpose pipes involves calculating losses in the terms of pressure, flow volume and flow speed. There are several methodologies for calculating these values. The most commonly used are the Hazen-Williams and Prandtl-Colebrook-White formulae.

    Another factor to be taken into account is the load loss produced by accessories (elbows, reducers, tees etc) and valves.

    When determining the flow speed, economic factors must be taken into account; (optimization of the investment in terms of water pumping) as well as the admissible values for water hammers. Generally, the minimum values used for avoiding sediment deposition is 0.5 m/s, and the maximum values are between 2.0 to 2.5 m/s, depending on the diameter of the pipe.

  • Increased Hydraulic Capacity

    Molecular Orientation reduces the pipe wall thickness, giving TOM® PVC-O pipes a greater internal diameter and flow section. The internal surface is extremely smooth, reducing the load loss and making it more difficult for deposits to be accumulated within the inner walls of the pipes.

    TOM® PVC-O pipes offer between 15% - 40% more hydraulic capacity than pipes made from other materials with the same external diameters.

  • Water Hammer

    Water hammer can introduce sudden surge in pressure on the pipe working pressure and may lead to breakage, particularly when the pipe has already been damaged by impact or corrosion. Air locks in the pipes during filling can be highly damaging when water hammer is present and can cause an excess of pressure far beyond the rated pressure ratings. TOM® PVC-O pipes can withstand this surge in pressure better than the metallic materials. However as a precautionary measure, it is important to observe the following recommendations:

    1. Filling the pipe should only be carried out at low speed and at the lowest point in the pipe system.
    2. Installing purging mechanisms at the highest points on each section of pipe.
    3. During filling it is important to leave open the elements capable of evacuating air and close then from bottom to top in the pipe as the pipe fills up with water.
The best mechanical properties
  • Tensile Strength

    PVC-O material outperforms the conventional plastics when it comes to strength. The stress-strain curve behaviour of PVC-O resembles closely to the metal behaviour.

    The complete transformation of PVC-O mechanical properties compared to conventional PVC can only be achieved in the higher PVC-O class, class 500, such as in HYPRO® PVC-O class 500 pipes.

  • Long-term hydrostatic resistance

    Materials lose their mechanical performance when they are subjected to stress over a long period of time. This phenomenon, known as creep, appears to a far lesser extent in PVC-O class 500 than in conventional plastics, which results as better materials in the long term. Bearing in mid that PVC-O is exceptionally resistant to fatigue and has a very good chemical resistance, HYPRO® PVC-O class 500 has a design life up to 50 years.

  • Eco Friendly Pipes
    The environmental benefits of TOM® PVC-O pipes relate to both chemical and mechanical properties. These benefits have a significant contribution towards lower carbon footprint throughout the product lifecycle and energy efficiency all along their useful life.

    • Only high quality raw materials are used in the formulation
    • Do not contain toxic substances on its formulation, such as heavy metals
    • 100% recyclable
    • The weight reduction minimizes the need of usage for heavy machinery
    • The plug-in socket system enables fast and easy installation
    • Bigger in pipe inner cross-sectional area provides an increase in the hydraulic capacity
    • Smooth inner surface reduces fluid flow friction and pumping losses in the network, therefore lowering the energy consumption during operation 
    • Design life of up to 50 years
    • Resistance to chemical attack, no corrosion during its useful life and reduce need for frequent replacement of pipes
    •  The socket joint of PVC-O pipes ensures greater leak tightness, avoiding the waste of water resources (NRW)
    • Superior performance against water hammer
Patented Air Based Technology

Molecor offers the technology for PVC O pipe manufacturing adapted to any specific need, technical requirement and market standard. For that purpose, Molecor builds long term relationships with its clients to back up every phase of the project, before, during and after the industrial technology implementation.

  • Efficiency and cleanness: easy maintenance, start-up and diameter change
  • Safety: the absence of boiling water prevents from leakages risks
  • Cost effectiveness: energy applied just to the pipe through specific air distribution
  • Easier Installation

    TOM® PVC-O pipes weigh less than half the conventional PVC and HDPE pipes, and are between six to twelve times lighter than ductile iron pipes of the same diameter. They are easy to handle and they can be lifted without mechanical assistance (for pipes up to DN 315 mm).

    During the installation process, the assembly between pipes are faster and there is no need for welded unions, thanks to the pipe socket design and the TOM® PVC-O properties.

    Additionally, with the TOM® PVC-O robustness, the stretches caused by impacts are minimal during unloading, installation and trenching.

  • Total Cost of Ownership

    Total cost of ownership is a financial estimate intended to help buyers and owners determine the direct and indirect costs of a product or system. It is a management accounting concept that can be used in full cost accounting or even ecological economics where it includes social costs. TOM® PVC-O pipes give benefits in various expects especially in cost effectiveness ranging from Water Companies to Installers. Low pumping energy and also, larger bore of nominal diameters give the reduction in utilities cost and maximum hydraulic capacity. Due to its light weight and easier to handle, the handling may not require heavy machinery. In addition, this may increase the speed of installation per metre/day thus, lower the installation cost for the installers or contractors.