One of the most misunderstood aspects of CPVC pipe is how its pressure rating is calculated and what that rating really communicates to the end user. A common assumption is that the pressure rating is determined by increasing the pressure in a pipe until it bursts. The reality is that CPVC intended for use in pressure piping systems must empirically prove its pressure bearing capability in a surprisingly rigorous data collection and analysis process.
When choosing a piping material, it is important to look for a partner that will be with you beyond the initial sale. You can expect help during the product evaluation and specification stage, but can the manufacturer be counted on to provide expert, timely support throughout installation and over the life of the piping system?
Delve deeper into CPVC's capabilities, benefits and performance in HVAC applications.
Choosing a building material always carries with it the question of whether to take a “lowest-cost” perspective or to broaden one’s sights by taking the long view. The latter depends greatly on consideration of a total cost of ownership (TCO) analysis that may not be readily available.
Noise reduction is an ongoing challenge in buildings where there are multiple occupants, such as hotels, college dormitories, hospitals and apartments. The noise associated with water flow and water hammer (a pressure surge or wave caused when flowing water is forced to stop or change direction suddenly) can disturb or even wake neighbor occupants during a late-night trip to the bathroom or shower.
Long-term reliability and performance in piping systems are paramount considerations in materials selection, which is why engineers, building owners and facility managers have relied on Corzan CPVC for decades. Also in the mix are the contractors who appreciate this fact: Corzan is so versatile it can be installed using either chemical (solvent welding) or mechanical joining methods. Lubrizol engineered the CPVC compound nearly 60 years ago, and we have not stopped honing and evolving its capabilities.
Many factors contribute to the design and specification of a piping system, from size to pressure to layout. It’s just as critical to think about what’s inside the pipes—the quality of the water and the disinfection treatments that will be used on that water over the life of the system. The additives used for primary and secondary disinfection can often have an impact on the integrity of the pipe.
For 30 years, the environmental movement and the green building emphasis that grew out of it have focused on the role of manufacturing in emitting waste byproducts to the air, water and land. As interest in green buildings has grown, so has the interest in the potential for environmental impacts across every phase of a building product or system’s lifecycle.
In the mid-2000s, the project team for the new W Hotel in downtown Fort Lauderdale, Fla., decided to make a big change, switching the project’s piping system from copper to CPVC to help alleviate cost increases. It’s a move that, a decade later, continues to prove its value.
To accommodate the influx of conference attendees visiting the new Birmingham-Jefferson Convention Complex (BJCC), a major hotel chain started construction of a new, $50 million hotel. Built nine stories high with 290 rooms, city officials were deeply invested in its progress and success. Hotel decision makers were committed to making sure the hotel was on budget—and opened on time. Their dedication influenced every aspect of the project, including project design, construction, and installation of plumbing systems.
The lower thermal conductivity of CPVC and other plastic piping materials compared to steel and copper often leads specifiers to wonder whether the material alone is sufficiently insulating for pipe in commercial plumbing and hydronic heating applications. Corzan CPVC’s thermal conductivity is 1/300th that of steel, so this is a reasonable question, especially given pipe insulation’s materials and labor cost. The reality is that it depends on the application.