Three-way Ball Valves

Instrumentation ball valves are available in sizes of 1/8 inch through 1 inch with any combination of FNPT, MNPT, or dual ferrule tube fitting connections. 6000PSI or 10000PSI pressures are available. These valves are 316 stainless steel construction, with a wide variety of soft seats available (PTFE is standard).

Product Features:

  • 3-way on-off switching models.
  • Heavy directional black fenolic handle or lever handle.
  • Blow-out proof bottom loaded stem.
  • Low operating torque.
  • Floating ball design for positive sealing.
  • Variety of end connections include 1/4" to 1" NPT, BSP male or female threaded ends and 1/4", 3/8" and 1/2" "PANAM" single or twin ferrule tube fitting ends.
  • Very robust and easy to maintain.
  • Maximum Working Pressure:
    • TFE Seat: 6000 PSI (400 bar) at 20C to 250C
    • KEF-F or Polyaman Seat: 10000 PSI (700 bar)
  • Each valve is 100% factory tested.


  • 316 stainless steel
  • Built to MSS-SP-99
  • ISO 9000 Certified

Data Sheets:

End Connections Material Model Number
Female x Female 316 Stainless Steel PBB-3XX-FF
Compression Tube Ends 316 Stainless Steel PBV-3XX-ODT

Note: Some drawings may be out of date. All products in compliance with ASME B 16.34 (temperature range -50F – 1000F).