` Heksagon - Delivering Engineered Solutions Globally

Delivering Engineered Solutions Globally



Sample Engineering Specification

All thermoplastic Needle Valves shall be constructed from PVC, ASTM D 1784 Cell Classification 12454, CPVC, ASTM D 1784 Cell Classification 23447, or Polypropylene, ASTM D 4101. All valves shall be globe pattern or angle pattern body configuration with 1/4", 3/8" or 1/2" female NPT end connections. All valves shall have removable bonnet cap with replaceable PTFE seal. No elastomer seals shall be used. All valves shall have built-in panel mounting nut and high impact polypropylene handles. All PVC and CPVC valves shall be pressure rated to 235 psi and all Polypropylene valves to 150 psi for water @ 73° F, as manufactured by Spears® Manufacturing Company.



Features – PVC, CPVC & PP

Needle Valves provide proportional opening to needle travel for more accurate metering applications and other fine adjustment flow control applications. Special design PTFE seal eliminates elastomer type seals or O-rings that can contribute to chemical compatibility problems. PVC, CPVC and Polypropylene valves are available with 1/4", 3/8" and 1/2" NPT female threaded ends in either standard Globe Pattern or special Angle Pattern configuration that eliminates need for additional elbow in various system setups.


  • Chemical & Corrosion Resistant PVC, CPVC or PP Construction
  • Precision Metering Chamber
  • Globe & Angle Body Configurations
  • Removable Bonnet For Easy Disassembly & Cleaning
  • Solid PTFE Stem Seal - No Elastomer Seal or Lubricants Used
  • Built-in Panel or Bracket Mounting Nut
  • Easy-Grip Polypropylene Handle
  • PVC & CPVC Pressure Rated to 235 psi @ 73° F Polypropylene Pressure Rated to 150 psi @ 73° F


Panel Mounting Instructions

Spears® Needle Valves may be easily mounted to panel or bracket ranging from 3/16" to 1/2" in thickness using the accompanying template. Prepare mounting hole to panel opening dimensions. Slots may be cut in various positions to allow more versatile orientation. Open valve partially. Remove Bonnet Cap with needle assembly (do not fully disassemble) and Panel Nut from valve body. Insert valve body through mounting hole and seat lugs. Reinstall Panel Nut and tighten snug.Carefully reinstall Bonnet Cap and needle assembly, tighten snug.

Caution: Failure to partially open the valve or back the needle off prior to re-assembly may damage needle when tightening Bonnet Cap.



Back >>


PT Heksagon Tiwikrama

Rukan Sunter Paradise Tahap II,
Blok A5 No.57
Jl. Bisma Raya, Sunter Agung
Jakarta 14350 - Indonesia

Telp. 021 – 6412817-20
Fax. 021 – 65308579
Email : sales@heksagon.co.id