Needle valve


Needle valve 508N

Our needle valve :

For any liquid, powder or gas.
Well suited for high pressure.
Optional bellows for dangerous medium.

To adjust the line flow, generally hand operated

DN 5 to DN 20
1/8" à 3/4"
PN 10 to PN 150
150 to 900 lbs

Type: 508

Functions – Needle valve

♦ shut off or control valve ; in line

Construction – Needle valve

  • Construction materials: Carbon Steel (CS), Stainless Steel (SS), Duplex & Super Duplex, Inconel & Incoloy®, Titanium, Zirconium, Uranus® B6, Tantalum, Nickel, Hastelloy®, Monel
  • Construction methods: Fabricated (Welded), Cast, Solid

Uses – Needle valve

  • Service conditions: High pressure, High temperature, Low temperature, Corrosion, High viscosity, Vacuum
  • Types of fluids: Liquids, Liquids with solid particles – Slurry, Gas, High viscosity fluids
  • Applications: Fine chemicals, Plastics and polymers, General chemicals, Petrochemicals, Nuclear and Naval / Submarine, Cryogenic service

Features & Options

Needle valve 508N

DN 5 to DN 20
1/8" à 3/4"
PN 10 to PN 150
150 to 900 lbs


♦ metal-to-metal disc/seat tightness
♦ needle disc shaped to enable fine flow setting
♦ position indicator
♦ bolted stuffing-box, live loaded with spring washers
♦ solid connection flanges
♦ in compliance with PED 97/23/EC


Handwheel,double acting pneumatic actuator,single acting pneumatic actuator (limited by size/pressure class and/or stroke),hydraulic actuator,electric motor,air motor

Closing device

needle or disc

Options – Needle valve

– adaptation to any type of connection
– hard faced seating surfaces
– vacuum tightness
– bellows sealed stem
– additional draining and/or cleaning nozzles
– firesafe design
– leak detector at stuffing box
– stroke limit or proximity switches
– dry air pneumatic actuator
– manual override for pneumatic actuator
– stainless steel pneumatic actuator
– closed actuator locking (safety)
– manual operator with locking mechanism
– manual operator mounted on ISO base for later motor adaptation
– electric actuator with local / remote controls
CAUTION : some options are not compatible