For steam and water piping, a hydrostatic pressure test should be maintained between which PSIG?

The appropriate range for a hydrostatic pressure test on steam and water piping is typically between 50 to 100 PSIG. This range is essential as it allows for the detection of leaks and ensures the integrity of the piping system under operational conditions. Maintaining pressure within this range helps to simulate the maximum pressures that the piping might encounter during normal operation, thereby assuring that the system can handle such conditions without risk of failure.

This testing process is vital in ensuring safety and compliance with building codes and standards in HVAC installations. Utilizing a pressure test within this interval also minimizes the potential for damaging the piping, which could occur if pressures were set too high. The chosen range strikes a balance between thorough testing while minimizing the risk of over-pressurizing the system components.