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PNEUMATISCHE VERSORGUNG ÜBER EINEN VENTILDECKEL
PNEUMATISCHE VERSORGUNG ÜBER EINEN VENTILDECKEL
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摘要
A device for spraying a coating product in liquid form, comprising: - a control valve (10) for controlling the flow of the liquid product, comprising: - a piston (20), secured to a needle valve (25) arranged to open or close a liquid product passage, - a valve body (11) comprising a housing (42) arranged to accommodate the piston (20), and comprising a supply connector (19) for supplying control fluid (50) arranged on a bottom dead centre side of the piston (20), the device being characterised in that the valve body (11) is monolithic and further comprises at least one supply channel (12, 13) for supplying control fluid (50) housed in a side wall of the valve body (11) and at least a longitudinal portion of which extends along a part of the housing (42) from the supply connector (19) side towards the top dead centre side of the piston (20).
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