Do a video on relief valve ratings- V, HV, UV. Throw in when to use lbs/hr, btu/hr, SCFM,GPM, etc.. Also, the tech should brush up on staggering set pressures. There is an acceptable range between the highest and lowest set pressure..
The comment about the inlet side of the valve is incorrect. This is what code says: The opening through all pipes and fittings between a piping system and its pressure relief device shall have at least the area of the pressure relief device inlet. The characteristics of this upstream system shall be such that the pressure drop will not reduce the relieving capacity below that required or adversely affect the operation of the pressure relief device.
hi in our facility they change serpentine design before it was like a s design they changed it as U design after that it started to pierce what is the problem why they use that serpantine base on s design
