


As mentioned in the previous module, there can be large variations between models with the same inlet connection but with varying lift characteristics. When making cost comparisons, it is imperative to consider the capacity of the valve as well as the nominal size. Cost - This is the most obvious consideration when selecting a safety valve for a non-critical application.The selection of a specific type of safety valve is governed by several factors: Once a suitable type has been selected, it is imperative that the correct relieving pressure and discharge capacity are established, and a suitably sized valve and set pressure is specified. As there is such a wide range of safety valves, there is no difficulty in selecting a safety valve that meets the specific requirements of a given application.
