Frequently Asked Questions

Corzan® Industrial Systems Product Info

Developed in 1958 by the world leader in chlorinated polyvinyl chloride (CPVC), Corzan is a high-performance piping material ideally suited for a wide variety of process industries requiring corrosion resistance at high-temperatures.
Historically the perception has persisted that most non-metallic piping materials do not have the tensile strength to meet the pressure requirements of process applications, especially at elevated temperatures. However, Corzan CPVC piping systems are pressure rated for operations up to 200 F° and are expected to maintain their pressure-bearing capabilities for long durations of time.
  • An industrial piping system is only as reliable as the quality of both its pipe and its fittings. Corzan CPVC is the only commercially available CPVC fitting compound that carries a pressure rating Listed by PPI (Plastics Pipe Institute).
  • Our compound has been pressure rated in accordance with ASTM D-2837 and PPI TR-4 having Hydrostatic Design Bases (HDB) of 4000 psi at 72 F° and 1000 psi at 180 F° as listed in PPI TR-4
  • Compared to other systems, Corzan fittings demonstrate improved creep resistance and the ability to better withstand long-term, high-temperature hydrostatic pressure. In fact, under the same conditions when pressure tested at 180 F° at 551 psi, fittings molded with Corzan CPVC compound actually lasted four times longer than those molded with other CPVC compounds.
  • This means that Corzan CPVC fittings will not only perform better under demanding field conditions, but they can even partially compensate for additional system stresses due to improper installation. No other non-metallic system can claim this type of creep resistance.
  • An industrial piping system is only as reliable as the quality of both its pipe and its fittings. Corzan CPVC is the only commercially available CPVC fitting compound that carries a pressure rating Listed by PPI (Plastics Pipe Institute).
  • Our compound has been pressure rated in accordance with ASTM D-2837 and PPI TR-4 having Hydrostatic Design Bases (HDB) of 4000 psi at 72 F° and 1000 psi at 180 F° as listed in PPI TR-4
  • Compared to other systems, Corzan fittings demonstrate improved creep resistance and the ability to better withstand long-term, high-temperature hydrostatic pressure. In fact, under the same conditions when pressure tested at 180 F° at 551 psi, fittings molded with Corzan CPVC compound actually lasted four times longer than those molded with other CPVC compounds.
  • This means that Corzan CPVC fittings will not only perform better under demanding field conditions, but they can even partially compensate for additional system stresses due to improper installation. No other non-metallic system can claim this type of creep resistance.
  • No single material is ideal for every application. Each has its own strengths and weaknesses which make it more suitable for one industry over another. Not surprisingly, many chemicals encountered in the process industry aggressively corrode most types of metal equipment, resulting in process leaks, flow restrictions and, ultimately, premature failure.
  • Specifically, Corzan is inert to most mineral acids, bases, salts, aliphatic hydrocarbons as well as galvanic corrosion.
  • Actual performance of any material, of course, depends on specific service conditions, such as temperature, operating pressures and chemical concentration. To increase user and specific confidence, Corzan CPVC has been tested with hundreds of chemicals at various temperatures, stress levels and other process conditions to assure material performance in many common process applications. Please contact us for more information.
  • Whenever a non-metal is chosen for an industrial application, a major consideration is its fire performance. Historically, most non-metals have been perceived to exhibit very poor fire performance. High-performance non-metals such as Corzan, however, exhibit a very strong fire performance when considering factors such as resistance to ignition, heat of combustion, flame spread and smoke generation.
  • Corzan CPVC inherently exhibits outstanding fire performance characteristics, therefore, no flame retardants or special smoke inhibitors need to be added to achieve these superior fire performance characteristics. In addition, its Limiting Oxygen Index (LOI) of 60% indicates that Corzan will not sustain flame if ignited.
  • Corzan offers an HDT (Heat Deflection Temperature) rating of 239 F° the highest of any ASTM D1784-compliant CPVC and it is the only CPVC with a cell class of 24448.
  • A great advantage that Corzan pipe enjoys over metallic pipe is a smooth inner surface which is resistant to scaling and fouling. This means that friction pressure losses in the fluid flow are minimized from the beginning and do not significantly increase as the system ages, as can be the case with metal pipes subject to scaling.
  • The Hazen-Williams formula is generally accepted method of calculating friction losses due to surface roughness in piping systems. Corzan CPVC has a Hazen-Williams C factor of 150 which is consistently higher than metallic systems- steel, galvanized or cast iron. In contrast, a steel or cast iron pipe system has a C factor of 130-140 when new. Through years of use, as the metal becomes rougher and pitted, that factor drops considerably- as low as 60-80 for worn/pitted cast iron pipe.
  • As a result, the flow rate of a Corzan CPVC piping system remains consistent throughout the life of system and is never compromised by pitting or scaling. This not only improves productivity and limits downtime over the years but, in some cases, it means that a considerable cost savings may be realized through the ability to actually downsize the piping system at the outset. Since the C factor never drops, a smaller pipe (which costs less to purchase and install) may be adequate for the flow requirements of the plant. And, with a smaller pipe comes increased energy savings, as less energy is required to move the fluid through the pipe.

Today there are more material choices than ever before. With the skyrocketing costs of most metals, non-metallic options now dominate in many industries. But of all the non-metallic systems on the market today, Corzan CPVC pipe and fittings represent the smart choice for one reason- quality.

  • Quality that comes from experience: We invented CPVC more than 50 years ago. No one has more experience than we do.
  • Quality that comes from technical expertise: Beyond providing a superior product, we also offer advanced research and development service representatives that are available on-site with your team to solve problems and make recommendations.
  • Quality that comes from consistency: Every company that manufactures Corzan CPVC participates in a contractually registered Quality Assurance Program. This ensures consistency of product quality so that our pipe and fittings perform to the same quality standards regardless of when, where, or by whom they were manufactured.
  • Quality that comes from compatibility: No other company has developed a program that assures chemical compatibility of ancillary products to help installers know which products can be used confidently and safely. Our global FGG/BM/CZ System Compatible Program is the only initiative that actually tests for chemical compatibility.
  • Quality that comes from choosing the right partners: Only the best manufacturers with proven track records of quality and reliability are chosen as licensed partners to convert Corzan raw material into high performance Corzan Piping Systems.

Ideally, process systems should be specified in a single material to simplify design and to minimize confusion in maintenance and repair situations. This is only possible if all of the necessary process components are available in the specified material.

To address this important design issue, Corzan Industrial Systems incorporates a full line of process components. Whether you need 16” (400mm) diameter piping systems, pump/filtration systems or air pollution control systems, Corzan CPVC can be designed into entire process systems.

Although Corzan CPVC is most often specified for pipe and fittings, it is also the ideal material of choice for a wide array of other components, including:

  • Ducting: Corzan CPVC offers the same outstanding balance of properties in round duct and fabricated duct fittings as it does in pipe and fittings. Readily available in ducting up to 24” (600mm), it can be fabricated upon request into larger sizes. It is the ideal component to produce a highly reliable fume handling system in corrosive environments.
  • Industrial sheet/lining: Corzan CPVC can also be extruded or compression molded into 48” X 96” sheets in thicknesses ranging from 1/8” to 3”. Because the sheets can easily be bent, shaped or welded, they represent a cost-effective, highly reliable option for a wide array of applications, including tanks, scrubbers and ventilation systems.
  • Other: In order to provide complete process systems, a number of other components are also available in Corzan CPVC, including valves, pumps, rods, basket strainers, and filters to name a few.

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Let us guide you to the right product to meet your unique needs. Contact us for more information and to find a piping system specialist.