Swagelok QTBM8-316 Quick Connect Fitting, 3/4″

his fitting is part of Swagelok’s QTM8 series of PTFE-sealed quick-connects. Designed for fast, tool-free connections, these components are ideal for fluid and gas systems requiring reliable, leak-tight performance.

Key Technical Specs (QTM8, 3/4″ Size)

• Connection Size: 3/4 inch

• Connection Type: Available with either Swagelok tubing interface or Female NPT threads, depending on variant

• O-Ring Material: PTFE (Krytox 240AC grease)

• Cv (Flow Coefficient):

  • Tube fitting version: approximately 6.5 Cv (8.5 Cv when used with SESO stems)

  • Female NPT version: approximately 7.8 Cv (8.5 with DESO stems)

• Pressure Ratings:

  • 1,000 psi (uncoupled, ambient)

  • 50 psi during coupling/uncoupling

• Series Compatibility:

  • All components (stems and bodies) from the same series and size are interchangeable

• Summary Table

  Feature	Specification
  Series	QTM8 (PTFE-Sealed Quick Connect)
  Connection Options	Swagelok tube fitting or 3/4″ Female NPT
  Cv (Flow Coefficient)	6.5 (tube), 7.8 (NPT); up to 8.5 with SESO/DESO stems
  Pressure Rating	1,000 psi uncoupled; 50 psi during coupling
  Interchangeability	Stems & bodies are interchangeable within same series