3-Way Ball Valves


3-Way Ball Valves Diverts Flow

ANCORP’s 3-way ball valve is designed to divert flow from either of two inlet ports to a single, common outlet port. The 3-way ball valve consists of a body, stem, L-port ball, and three end caps. Components are machined from corrosive resistant 316L stainless steel. Fluoroelastomers are used to seal the stem and end caps from the atmosphere while Teflon® seats cold flow around the ball to isolate one outlet port while diverting flow through the other. Flow through the valve is diverted manually or pneumatically by 1/4 turn, quick actuation. The Teflon® sealing surface is protected from deposition, maintaining a clean dynamic seal that prevents failure due to contamination. This feature reduces particulate build-up, making this valve robust in particle-rich effluent streams.



The corrosion resistant design of ANCORP’s 3-way vacuum ball valves makes them ideal for diverting flow or isolating pumping lines, reactors, traps, and scrubbers on vacuum coating tools used for MOCVD, PVD, and other thin-film coating processes.



ANCORP’s 3-way ball valve maximizes design efficiencies in high vacuum systems and coating tools when compared to multi-valve systems with equivalent functionality:


  • Reduced bill of materials
  • Reduced footprint
  • Reduced overall weight
  • Reduced design complexity
  • Fewer actuated components
  • Fewer leak paths
  • Less total area to heat
  • Reduced maintenance costs from MRO parts