Patent ID: 6953055

Claim:
A pneumatic gate valve, comprising: a valve housing defining an axis and having an interior, said valve housing made of injection-molded plastic material and having a plurality of external ports; a plurality of valve bushings so received in the interior of the valve housing in axial-spaced relationship as to define a valve bore and a plurality of pressure fluid compartments in fluid communication with the ports, whereby the ports and the pressure fluid compartments are placed into one-to-one correspondence; a slide member for regulating a flow of compressed air between the ports, said slide member accommodated in the valve bore of the valve housing for displacement in the direction of the axis, wherein the valve bushings are made of a plastic material having a melting temperature which corresponds to a melting temperature of the plastic material of the valve housing in order to realize a material union between the valve bushings and the valve housing, when plastic material is molded around the valve bushings during injection molding of the valve housing.