` Heksagon - Delivering Engineered Solutions Globally

Delivering Engineered Solutions Globally



Sample Engineering Specification

All thermoplastic check valves shall be True Union 2000 Industrial Ball Check type manufactured to ASTM F 1970 and constructed from PVC Type I, ASTM D 1784, Cell Classification 12454 or CPVC Type IV, ASTM D 1784 Cell Classification 23447. All O-rings shall be EPDM or Viton®. All valve union nuts shall have Buttress threads.

All valve seats shall be a standard O-ring type. All seal carriers shall be Safe-T-Blocked®. All valve components shall be replaceable.

All EPDM valves shall be listed by NSF for use in potable water service. All PVC and CPVC 1/2" through 4" valves shall be pressure rated to 235 psi, all 6" and 8" Venturied and all flanged valves shall be pressure rated to 150 psi for water at 73° F as manufactured by Spears® Manufacturing Company.



Features – PVC, CPVC

Flow tested design provides quick response with positive seal for prevention of system back flow in industrial and chemical processing applications. Valves are available in IPS sizes 1/2" through 6" with socket/regular thread, SR threaded (Special Reinforced), flanged or spigot end connectors and 8" venturied valve with socket or flanged ends. Also available in metric socket and BSPthread sizes 1/2" through 2".


  • Chemical & Corrosion Resistant PVC or CPVC Construction
  • Also Available in Spears® LXT™ High Purity,Low Extractable PVC Material
  • Strong, Buttress Thread Union Nuts
  • Spears® Safe-T-Blocked® Seal Carrier
  • Uses Standard O-ring Seat
  • EPDM or Viton® O-rings
  • Fully Serviceable, Replaceable Components
  • Sizes 1/2" - 4" Pressure Rated to 235 psi @ 73° F, Sizes 6" and 8" Venturied and all Flanged Pressure Rated to 150 psi @ 73° F
  • Suitable for Either Horizontal or Vertical Installations
  • EPDM valves NSF Certified for Potable Water use
  • Suitable for Vacuum Service
  • Assembled with Silicone-Free, Water Soluble Lubricants
  • Manufactured to ASTM F 1970


Optional Accessories*

  • Retro-Fit End Connector Sets for Valve Replacement
  • Split-Nut Repair Kits for Union Nut Replacement
  • Supplemental End Connectors

Spears® Ball Check Valves easily convert to foot valves utilizing optional Foot Valve Screen adapters found in Ball ValveAccessories section.



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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