What Is The Pressure Rating/Pressure Class For JM Eagles PVC Pipe?
The pressure rating of PVC pipe is established by dividing the maximum long-term pressure capacity of the pipe by the desired factor of safety, which is usually 2.0. The C900 pressure class is derived in a similar manner; however, a safety factor of 2.5 is used. Also note that a surge allowance is included within the safety factor. Although PVC pipe can withstand short-term hydrostatic pressure applications at levels substantially higher than the pressure rating or class, the allowable pressure is properly based on the product’s long-term strength. Research and investigations have accumulated vast quantities of data that clearly substantiate the reliability of PVC pipe pressure rating and pressure class values. As specified in AWWA, C900 Pressure Class is defined as the “pipe’s designated design capacity (psi) that corresponds with its recommended safe sustained operating pressure”. Pressure class designations include an allowance for pressure surges above the maximum sustained operati
