Pressure-Temperature Ratings according to DIN EN1092-1
The maximum allowable operating pressure for valves and flanges drops with rising temperature (within allowable limits). For flanges, these ratings are defined in the European Standard EN 1092-1. This standard lists the maximum allowable operating pressure for specific materials at specific temperatures and nominal pressure ratings.
The standard defines the operating range with regards to pressure and temperature, as well as their interdependence (p,T-rating). This information includes a maximum allowable pressure (PS) up to which the devices can be used at a certain allowable temperature (TS).
Our tool provides a convenient way to quickly check the pressure compatibility of your valve at your specific operating temperature.
Please be aware that these values are general recommended ratings based on the flange standard. The actual values for operating pressure and temperature can deviate, depending on the specific valve or device in question!
For steel materials, a vR value must be selected for the pressure-temperature rating. The nominal wall thickness of the flange is decisive for the assignment of the corresponding pressure to temperature.
Therefore the nominal wall thickness of the flange must be less than or equal to vR.