How does US Bellows define a hydro-test pressure based on design pressure?
When determining the pressure for hydrostatic testing of your expansion joints, the most important aspect is the applicable design codes. Normally, the ASME SEC VIII Div.1 general hydro-test pressure will be 1.3 x design pressure, but if you are testing for ASME B31.1, B31.3,B31.4, it will be 1.5 x design pressure.
That being said, there are many other considerations that will determine the test pressure, such as:
- Test Duration
- Temperature
- End conditions of the assemblies
- Special cases based on the customer’s situation
Be sure to discuss with our engineers so that we can correctly test your bellows and expansion joints.