Entries

• in Needle Valves

  Marquest Scientific is a manufacturer of fluid handling products and offers over a dozen needle valve models, as well as the "L" series, and a variety of accessories and replacement parts.

  • PVC, CPVC, & Polypropylene

• in Plastic Needle Valves

  Marquest Scientific, Inc. offers Throttle Master, plastic with tube connections, and L Series on/off cycling needle valves. Throttle Master needle valves come in come in angle/globe pattern styles, inlet sizes ranging from 1/4" to 1/2", and they are constructed from following materials: PTFE, Teflon, Polypro, CPVC, PVC, polypropylene, etc. These valves feature panel thicknesses ranging from 1/16" to 1/2", an injection molded/rugged design, and 24 pitch metering threads.

  • PVC, PVC & Polypropylene Needle Valves
  • L Series On/Off Cycling Plastic Needle Valves
  • Plastic Needle Valves with Tube Connections