Durco® G4X Sleeveline Non-Lubricated Plug Valve

The Durco® G4X Sleeveline non-lubricated plug valve helps control fugitive emissions in demanding HF alkylation, toxic, lethal and sub-zero services. It combines certified low-emission performance, fire-safe design and soft-seat zero-leakage shutoff to support plant and personnel safety.

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  • Limits fugitive emissions with continuously loaded packing that meets ISO 15848-1-BH-CO3 and API 641
  • Separates plug and packing adjustment for precise in-line sealing control
  • Uses a self-sealing diaphragm that moves with plug adjustment to eliminate a potential leak path
  • Supports plant and personnel safety with an API 607 fire-safe design for external leakage

  • ASME B16.34
  • PED
  • CRN
  • API 598
  • ISO 10497
  • API 607 (for external leakage only)
  • API 641 1st edition
  • ISO 15848-1-BH-CO3
  • Sizes: NPS 1/2 to 20
  • Pressure classes: 150 to 300
  • Temperatures: -50 to 600°F (-45 to 315°C) depending on alloy and sealing configuration. Fugitive emission testing is limited in temperature range to 204°C (400°F) and certain materials
  • Materials of construction
    • Body: Monel, carbon steel, stainless steel, corrosion resistant alloy
    • Seat/sleeve: TFE, TFM, or TMHT

G4X

  • For applications where a fire-safe design is not required
  • PTFE stem packing and seal
  • Fugitive emissiona API 641

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