High pressure valve

A high pressure valve forming part of the common rail diesel injection circuit of an internal combustion engine, the high pressure valve comprising:

• an axial body on which is fixed an electromagnet having a shell, a coil and a core enclosed under a bell capping the body, the core actuating a needle between an open state and a closed state,
• the shell having an axial tubular part open at a first end and a radial discal part at a second end, the discal part having a central hole connecting an opposite internal surface to an external surface and the body being provided externally with a cylindrical centring surface and with a radial support surface, the shell being arranged on the body around the centring surface, the external discal surface being in surface contact against the support surface of the body, a tubular space then being formed between the body and the tubular part of the shell, the coil being arranged in the tubular space itself closed by a closure ring,
• the liquid-tightness between the body and the shell being ensured by an elastomeric gasket arranged around the centring surface and against the internal discal surface, the high pressure valve being characterised by the fact that it comprises in addition
• a wedging washer mounted and clamped on the centring surface of the body and arranged between the coil and the sealing gasket, the wedging washer compressing the gasket against the centring surface and against the internal discal surface, the shell then being immobilised on the body by the said wedging washer.