Marquest Series NA Throttle Master™ Needle Valve, 1/4" Female NPT Connection, PVDF Construction, Virgin PTFE Stem Seal, 180° Straight Globe Pattern

Item #NG-250-PVD
  • Produced in two styles: Globe pattern (straight 180°) and angle pattern (90°)
  • Needle finish, SPI/SPE No. 1
  • Bubble tight, low torque shutoff
  • Long term performance
  • All injection molded, rugged design and construction
  • Excellent linearity of flow
  • Needle stem is PTFE sealed for excellent chemical resistance & high purity
  • Integrally designed panel mounting, no fasteners required, mounts to panel thicknesses from 1/16" to 1/2"
  • No elastomers (O-ring), metals, or lubricants
  • No corrosion or contamination
Marquest Series NG/NA Throttle Master™ plastic needle valves provide precise flow control with fine adjustment of corrosive and high purity fluids. The developed metering chamber provides reliable stabilization and linearity of flow. Ultimate cross sectional geometry allows the manufacturing process to attain full material property potentials for the most demanding applications. These plastic needle valves are produced in two styles; Series NG (Globe pattern straight 180°) and Series NA (Angle pattern 90°). They are constructed of either PVC, GFPP, CPVC or PVDF bodies with Virgin PTFE stem seals in sizes 1/4", 3/8" and 1/2". Female NPT, solvent sockets or compression tube ends are available.

Series NG/NA Throttle Master™ plastic needle valves are ideal for the following markets and applications:
  • Wastewater Treatment
  • Semiconductor Manufacturing
  • Chemical Plants
  • Chemical Feed Systems
  • Food & Beverage
  • Wet Processing
  • Chemical Odor Control
  • Photographic Processing
  • Wet Benches & Fume Hoods
  • Commercial RO System Sampling

Additional Documents:

CategoryValves
Product ColorWhite
ComplianceARRA Section 1605 "Buy American" / ASME A112.18.1M compliant
Connection TypeFemale NPT
MaterialPVDF
ManufacturerMarquest Scientific
MountPanel or bracket mount
Orientation180° straight globe pattern
Pressure Rating230 psi @ 140° F
Seal MaterialVirgin PTFE
Size1/4"
Type of productNeedle Valve