RIPRA VÁŠ PDMS PARTNER
Maximum internal working pressures for fittings
The allowable pressure ratings for fittings designed in accordance with the standard ASME B 16.9–1993 may be calculated as for straight seamless pipe in accordance with the rules established in the applicable section of the ASME B 31 codes for pressure piping.
|ASME B 31.4||Liquid transportation systems for hydrocarbons, liquid petroleum gas, anhydrous ammonia and alcohols|
|ASME B 31.5||Refrigeration piping|
|ASME B 31.1||Power piping|
|ASME B 31.3||Chemical plant and petroleum refinery piping|
|ASME B 31.8||Gas transmission and distribution piping systems|
Hydrostatic testing for fittings
Hydrostatic testing of wrought fittings is not required. All fittings shall be capable of withstanding, without leakage, a test pressure equal to that prescribed in the specification for the pipe with which the fitting’s marking identifies.