Type 522 Needle Valve


The Type 522 Needle Valve may be used in a wide range of services where SYGEF® is suitable in the  chemical and general environmental limits of the installation.

Specific applications should be evaluated on the basis of pressure, temperature and flow capacity desired.

The ¼" and ⅜" ports are standard pipe threads (NPT) and may be adapted to tube fittings, socket adaptors or other piping components.

Product Overview

Technical Data:

Size Range:

  • ¼" - ½"

Pressure Rating:

  • PN10 (150 PSI)

Joining Technology:

  • Threaded Female NPT

Standard Ratings:

  • ASTM D2464
  • ASTM D3222


  • Polypropylene (PP-H)
  • Polyvinylidene Fluoride (PVDF)


  • Corrosion-resistant
  • Ideal flow characteristics
  • Shorter installation length enables more compact systems
  • Integrated fastening system for direct mounting
  • Fully serviceable valve with an ergonomic handle and built-in seal removal
  • EPDM and FPM seals available



Fields of Application:

  • Ultrapure DI Water
  • Hot Ultrapure DI Water