The invention regards a valve joint, in particular a joint of measurement for fluidici systems with elevated exercise pressures, mechanical oscillations of pressure to vhf and vibrations, for the measurement of pressures and in combination of pressures and temperatures. It consists of a connection compass, in the hole of which elastically sped up with a first system of estate, and a connection to collegabile screw stablily with said compass is arranged a non-return valve, the elastic body sped up of the non-return valve, arranged in the hole of the connection compass, not being spostabile axially in occasion of the screwing of the attack to screw for the measurement in order of measurement by means of the nipplo to graft of this last against the elastic pressure in the position of opening of the valve and nipplo to graft thus closing to held on according to system of estate supported in one estate compass. In order of normal exercise with attack to screw (1) stablily connected, 17, 21, 22 exist average () which cause a drainage of pressure between the first system of held (13, 14) of body (11) of closed the valve and the attack to screw (1). A split ring of emergency (24) against the svitamento in order to assure against the vibrations of the dice to implication (2) of the pointed hood of protection and the attack to screw for the measurement is disposed in a empty one of thread of the connection compass (4) and in a cavity (23) of the dice to implication (2) respective of the attack to screw for the measurement (3). (FIG.12)