Marquest Scientific, Inc.
Marquest Scientific, Inc.
2950 Airway Avenue, Bldg C-5
Costa Mesa, California U.S.A.
Tel: (714) 491-9191
Toll Free: (866) 452-2349
Fax: (714) 491-9199
Email: sales@marquestscientific.com
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L Series Needle Valves with Serrated Barb Outlet
Provide precise flow control with fine adjustment of corrosive and high purity fluids.

Features
  • Standard Inlet sizes are 1/4", 3/8", & 1/2" Female NPT with a Serrated Barb Tip that accepts 1/4" - 1/2" ID Tubing
  • Max Pressure: 240 PSI @ 73 degrees Farenheit
  • FDA, USDA, and USP standards are either met and/or exceeded.
  • Contamination-free 100% Virgin Solef PVDF (Polyvinylidene Flouride) assures high purity. Listed under NSF Standard 14/61 for both potable water and DWV applications
  • Needle finish, SPI/SPE No. 1. Bubble tight, low torque shutoff long term performance.
  • 24 Pitch metering thread. 20% Finer metering control
  • PTFE sealed, chemical resistance, high purity.
  • No elastomers (O-Rings), metals or lubricants, no corrosion, no contamination.
  • Integrally designed panel mounting, no fasteners required, mounts to panel thicknesses from 1/16" to 1/2".
  • Valve is Crevice Free with Zero Dead Leg
  • "L Series" Technology offers all new PTFE sealing with Unlimited Life Warranty:
  • PTFE on/off seal is easily replaced in the field, no tools required
  • Exceptional low torque on/off operation

PLEASE CLICK ITEM # BELOW TO VIEW ADDITIONAL SPECIFICATIONS & DOWNLOADS

Product Image
Items PP Needle Valve w/ Tube Connection
NGL-250-PVDBT
1/4" Female NPT Inlet x 1/4" thru 1/2" Tube ID Serrated Barb Tip Outlet, Globe (Straight Pattern) L Series Needle Valve, High Purity PVDF
List Price $185.95
 PP Needle Valve w/ Tube Connection
NGL-375-PVDBT
3/8" Female NPT Inlet x 1/4" thru 1/2" Tube ID Serrated Barb Tip Outlet, Globe (Straight Pattern) L Series Needle Valve, High Purity PVDF
List Price $185.95
 PP Needle Valve w/ Tube Connection
NGL-500-PVDBT
1/2" Female NPT Inlet x 1/4" thru 1/2" Tube ID Serrated Barb Tip Outlet, Globe (Straight Pattern) L Series Needle Valve, High Purity PVDF
List Price $175.40
 NAL-250-PPBT
NAL-250-PVDBT
1/4" Female NPT Inlet x 1/4" thru 1/2" Tube ID Serrated Barb Tip Outlet, Angle Pattern L Series Needle Valve, High Purity PVDF
List Price $185.95
 NAL_375_PVDBT.png
NAL-375-PVDBT
3/8" Female NPT Inlet x 1/4" thru 1/2" Tube ID Serrated Barb Tip Outlet, Angle Pattern L Series Needle Valve, High Purity PVDF
List Price $185.95
Materials N/A PVDF
Style N/A Straight Pattern, L Series N/A Straight Pattern, L Series N/A Globe Pattern, L Series N/A Angle Pattern, L Series N/A Angle Pattern, L Series
Inlet x Outlet N/A 1/4" Female NPT x Barb N/A 3/8" Female NPT x Barb N/A 1/2" Female NPT x Barb N/A 1/4" Female NPT x Barb N/A 3/8" Female NPT x Barb
Cv Factor N/A 0.310 N/A 0.310 N/A 0.620 N/A 0.426 N/A 0.426
Seal N/A PTFE