Design pressure V maximum working pressure
Design pressure V maximum working pressure
(OP)
Hi
I have an old hot water storage unit with a name plast on it and it is as follows
Maximum working pressure 0.8 bar
Design Pressure 1.5 bar
Test Pressure 3.0bar
What is the difference between maximum working pressure and design pressure. I want to increase the current working pressure to close to 1.5 bar but not more.? I realise I have to replace the pressure relief valve.
Thanks!
I have an old hot water storage unit with a name plast on it and it is as follows
Maximum working pressure 0.8 bar
Design Pressure 1.5 bar
Test Pressure 3.0bar
What is the difference between maximum working pressure and design pressure. I want to increase the current working pressure to close to 1.5 bar but not more.? I realise I have to replace the pressure relief valve.
Thanks!





RE: Design pressure V maximum working pressure
Check the nameplate again, also look for the design code which MUST be displayed on the nameplate.
Cheers,
gr2vessels
RE: Design pressure V maximum working pressure
RE: Design pressure V maximum working pressure
RE: Design pressure V maximum working pressure
Say, when you are operating at 1.5 bar max, it is impractical to set PRV at 1.5 bar. But 1.3 bar looks doable.
RE: Design pressure V maximum working pressure
And the Operating (working) pressure includes for fatigue, in which case increasing the operating pressure could be hazardous.
Is the pressure/temperature cyclic?