Needle Valves

Needle Valves

Needle Valves are used to make relatively fine adjustments in the amount of fluid flow.

  • PN40-630
  • DN2-22 mm
  • T(°C)-20 - +300
  • design:straight-way / Angle type
  • Materials:stainless steel (e.g. 1.4571) Steel (e.g. C22.8) Hastelloy, Monell
  • connections:female / Male screw, NPT, BSP-BSPT, Socket weld, Cutting ring, Twin-ferrule, Weld-on pipe
  • PackingPTFE and Graphite
  • Operation:Handwheel from Plastic | Handwheel out of Sheet metal | Toggle made of metal | Square for Handwheel / socket spanner

Needle Valves are used to make relatively fine adjustments in the amount of fluid flow.

The distinguishing characteristic of a needle valve is the long, tapered, needlelike point on the end of the valve stem. This NEEDLE acts as a disk. The longer part of the needle is smaller than the orifice in the valve seat and passes through the orifice before the needle seats. This arrangement permits a very gradual increase or decrease in the size of the opening. Needle valves are often used as component parts of other, more complicated valves. For example, they are used in some types of reducing valves.

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