Inlet valve for the inlet of a compressor element and compressor and compressor element provided with such an inlet valve

Inlet valve containing a housing (17) with an entry (18) and an exit (19) and an internal part (17b) which together with an external part (17a) delimits a flow channel (20) between entry (18) and exit (19), whereby this flow channe1 (20) is closable by a valve (21) f characterised in that this valve (21) comprises a piston (24) and a valve member (25), whereby the piston (24) is slidable in the housing (17) and is connected with the exit (19) and whereby the valve member (25) is formed by a valve shaft piston (33) which is slidable in the piston (24) such that in rest mode the valve member (25) is pushed by the piston (24) against a valve seat, whereby between the valve shaft piston (33) and the piston (23) a chamber (41) is enclosed which can come into fluid connection with the pressure vessel (8) and is provided with a blow-off exit (42) which forms a fluid connection between the chamber (41) and the entry (18), whereby the valve shaft piston (33) contains a bypass channel (44) which is connected with the chamber (41) and the sidewall of the valve shaft piston (33).