Valve Assembly Kits
Needle Valve Assembly Kits
A needle valve has a small port and a threaded, needle-shaped plunger. It allows precise regulation of flow and is generally only used with relatively low flow rates. As the screw is turned and the plunger retracts, flow between the seat and the plunger is possible, however, until the plunger is completely retracted the fluid flow is significantly reduced.
Since it takes many turns of the fine-threaded screw to retract the plunger, precise regulation of flow rate is possible. The slow operation makes needle valves unsuitable for shut-off applications.
The DVA-NE needle valve assembly kit includes a brand new needle valve, a set of tools and job worksheets, allowing students to easily learn about the construction, disassembly, maintenance and re-assembly of industrial needle valves.