| CPC F16K 17/044 (2013.01) [H01F 27/02 (2013.01)] | 19 Claims | 

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               1. An adaptor (11) for an electrical transformer explosion prevention device comprising: 
            in cross section, an upper wall and a lower wall spaced from the upper wall; 
                a first drilled interface (111) in a first region of the lower wall; 
                a second drilled interface (112) in a first region of the upper wall, the first drilled interface and the second drilled interface being concentric with a first axis; 
                a first set of bolt holes positioned about the first drilled interface (111) and a second set of bolt holes positioned about the second drilled interface (112), the first set of bolt holes and the second set of bolt holes being aligned such that the adaptor (11) can be secured to a transformer tank outlet flange (2d) of a transformer tank outlet (2c) initially structured to host a static spring pressure relief valve, and with the first drilled interface (111) in fluid communication with the transformer tank outlet (2c); and 
                an adaptor outlet (113a) with an adaptor outlet flange (113) secured to the body at a second region of the upper wall and concentric with a second axis, the adaptor outlet (113) having a third set of bolt holes with which a static spring pressure relief valve (22) can be attached to the adaptor outlet flange member (113a). 
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