A needle valve nozzle for an injection mould has a nozzle body with at least one melt channel that terminates in a nozzle mouthpiece and a fluidic connection to a mould cavity formed by a mould insert

Provided is a needle valve in which a gap between a valve casing and a needle is reliably sealed and an origin of the needle can be readily obtained with high precision. A needle is screwed into a cyl

An improved fuel injector for providing precise control over injection timing, quantity and rate shape is provided which includes a fuel pressure balancing device for balancing the fuel pressure force

A valve comprising a first chamber on its control or operating side, and a second chamber on its fluid side, which chambers are separated from one another by means of an uninterrupted diaphragm. The c

A needle valve comprises a valve body including a conduit portion through which a flow passage is formed and a bonnet portion which screws into a cylindrical well formed in one side of the conduit por

A needle valve having improved accuracy and wear characteristics is disclosed in which the valve stem is subjected to a constant force to prevent backlash throughout its entire movement with respect t

A limiter of the extent of adjustment of a fuel metering needle valve of a carburetor for an internal combustion engine. The limiter has a housing with a passage in which the head end of the needle va

A valve, particularly in combination with a needle syringe, for containing fluids, i.e., liquids or gases, within a confined space. The valve per se includes a body comprising a tubular member (e.g.,