Needle-valves to be inserted in a hot runner panel of an injection moulding machine for the distribution of the molten material to a plurality of dies fastened to the front of a hot runner panel and w

The virtue of the needle valve is from the vernier effect of the ratio between the needle's length and its diameter, or the difference in diameter between needle and seat. A long travel axially (the c

This inside threaded needle valve is of simple design for wide pressure range. Long life is ensured by the non-rotating, self-centering valve tip and also by the weld on valve seat. The needle valve c

The pressure-flow characteristics of needle valves used on anaesthetic equipment were investigated. It was found that, under normal conditions of use, the valves behaved in a manner similar to converg

The needle valve can be made with flanged, threaded, butt welded and socket welded ends as well. The needle valve can be built in the streamline of the pipeline in the direction of the arrow located o

Actually there isn't any since a strainer is, in reality, a coarse filter. The question is then one of semantics. Generally it is assumed that if the particle to be removed is not visible to the nake

The distinguishing characteristic of a needle valve is the long, tapered, needle-like point on the end of the valve stem. This

A needle-valve for an injection moulding machine's discharge orifices to the dies, said machine having a hot runner panel, and which is closed by spring means and opened by the pressure of the molten