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


Size range
DN 15 - 200 (NPS � - 8) Full bore, DN 125 - 200 (NPS 5 - 8) Reduced bore
Pressure rating
ASME Class 150, 300 JIS 10K, 20K
`-29°C to 150°C (-20°F - 302°F)
4 seats (L and T-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.
  • Equipped with 4 seats so that each port can be used as an inlet.