Throttle MasterTM Needle Valves

Materials of Construction: PVC, CPVC, Polypropylene & PVDF

Port Connections: 1/4", 3/8", & 1/2" Fem NPT and Solvent Socket "Slip". Universally adaptable to pipe and tube.





Marquest Scientific Throttle Master Needle Valves provide precision flow control of corrosive and high purity fluids. Operating pressures and flow rates up to 220 PSI and 12 GPM respectively. There are no elastomers, lubricants, or metals used in their construction. Available in PVC, CPVC, Polypro, & PVDF with Modified PTFE seals and a variety of end connection options, the Marquest Scientific Needle Valve will handle the toughest of applications.


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Features & Benefits

  • Produced in two styles: Globe (straight) and angle pattern.
  • 24 Pitch metering thread. 20% finer metering control. Excellent linearity of flow.
  • Needle finish, SPI/SPE No.1. bubble tight, low torque shutoff for long term performance.
  • All injection molded, rugged design and construction.
  • Needle stem is Modified PTFE sealed for excellent chemical resistance and high purity. Modified PTFE for resilient sealing.
  • Integrally designed panel mounting, no fasteners required, mounts to panel thicknesses from 1/16" to 1/2".
  • No Elastomers (O-Rings), metals or lubricants. No corrosion, no contamination. Zero Dead Leg.
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Features & Specifications:

  • Produced in two styles: Globe (straight) and angle pattern.
  • 24 Pitch metering thread. 20% finer metering control. Excellent linearity of flow.
  • Needle finish, SPI/SPE No.1. bubble tight, low torque shutoff for long term performance.
  • All injection molded, rugged design and construction.
  • Needle stem is Modified PTFE sealed for excellent chemical resistance and high purity. Modified PTFE for resilient sealing.
  • Integrally designed panel mounting, no fasteners required, mounts to panel thicknesses from 1/16" to 1/2".
  • No Elastomers (O-Rings), metals or lubricants. No corrosion, no contamination. Zero Dead Leg.

All 1/4" through 1/2" thermoplastic needle valves shall be manufactured with PVC Type 1, Grade (ASTM D1784, Cell Classification 12454) NSF STD 14 & 61, CPVC (ASTM D1784, Cell Classification 23447), Glass/Mineral reinforced Polypropylene or Natural PVDF FDA 21 CFR177.2510, NSF 51 & 61. All materials are to be virgin, no re-processed materials allowed.

All seal components shall be PTFE or Modified PTFE, no O-Rings or other elastomers permitted. The flow adjustment shall be performed by a 24 pitch metering thread. The handle shall be retained without metal fasteners and be of the same material as the valve body.

All PVC, CPVC, Polypropylene, & PVDF 1/4" through 1/2" needle valves shall be pressure rated for 250 PSI @ 68 F. PPG shall be pressure rated for 250 PSI @ 68 F.

All Needle Valves shall carry a 3 year warranty and be manufactured by Marquest Scientific Inc.

Markets & Applications:

  • Wastewater Treatment
  • Semiconductor Manufacturing
  • Chemical Manufacturing
  • Chemical Feed Systems
  • Food & Beverage
  • Desalination Plants
  • Commercial Reverse Osmosis
  • Farming & Agriculture
  • Metal Plating
  • Wet Processing
  • Chemical Odor Control
  • PCB Manufacturing
  • Pharmaceutical Manufacturing
  • Alternative Biofuels
  • Wet Bench & Fume Hoods
  • Nanofluidics
  • Many More..

Literature:

For literature / data sheets on our line of Throttle Master needle valves, please click on one of the links below to download in PDF format. Please email us at sales@marquestscientific.com or call us toll free (866) 452-2340 if the file your are looking for is not available below.

Installation & Operating Manuals:

For Installation and Operating Manuals on our line of Throttle Master needle valves, please click on one of the links below to download in PDF format. Please email sales@marquestscientific.com or call us toll free (866) 452-2340 if the file your are looking for is not available below.

Sales Drawings / CAD:

For sales drawings on our line of Throttle Master needle valves, please click on one of the links below to download in PDF format. Please email sales@marquestscientific.com or call us toll free (866) 452-2340 if the file your are looking for is not available below.

For Throttle Master Needle Valve CAD File Downloading, Please click on the CADCenter Button.

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