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KTM Series NB1 Three Way Floating Ball Valves
KTM MB1-NB1 Floating Ball Valves-FAMILY
KTM Series NB1 three-way, two seat, L-port floating ball valves are available in both full and reduced bore configurations.
The Series NB1 is designed to divert and mix fluids, replacing several two-way valves to optimize space and simplify piping.
KTM Series NB1 Three Way Floating Ball Valves


Size range
DN 40 - 200 (NPS 1� - 8) Full bore, DN 125 - 250 (NPS 5 - 10) Reduced bore
Pressure rating
ASME Class 150, 300 JIS 10K, 20K
`-29°C to 270°C (-20°F - 518°F) Standard, Up to +500°C / 932°F Optional
2 seats (L -port)


  • Positive alignment of body.
  • Blow-out proof stem for safety.
  • Sphericity tolerance of the ball is unsurpassed.
  • Multiple layers of adjustable PTFE chevron packing rings for standard model enable excellent fugitive emission control.
  • Positive position indication.
  • Locking device capable.
  • Heavy duty body construction.
  • Machined ISO 5211 top mounting flange.
  • Live load springs keep constant force on stem-seal packing, ensuring seal integrity and extended valve life.
  • Dual shaft bearings for high cycle life operation.
  • Higher Cv (Kv) values and less cost for diverting which can be normally done with multiple installation of valves.
  • OM2 compatible, co-polymer E-seat as standard.