Alfa Laval 660 Series Fractional Valves

Alfa Laval's 660 Series fractional valves from Central States Industrial (CSI) offer convenient manual operation in a fractional size valve. Alfa Laval designed these valves for applications which require a secure, sanitary or sterile environment.

Tri-Clamp® or hose barb outlets make this valve versatile for standard shutoff or sampling purposes. CSI also offers valve modification to fit specialized applications.


The 660 valve is operated by means of a manual handle, which raises and lowers the PTFE valve plug.

  • Available with ½ inch Tri-Clamp x ¼ inch hose barb or ½ inch Tri-Clamp x ½ inch Tri-Clamp
  • Modified designs available from CSI to fit special applications
  • Standard handle is knurled polyethylene; bronze handle available for higher pressure/heat applications
  • Teflon plug with o-ring, optional electropolished ID
½ inch Tri-Clamp x ¼ inch hose barb pictured
Product Wetted Steel Parts316L
Other Steel Parts304
HandleUHMV (standard)
Bronze (optional)
Max Temperature (UHMW polyethylene handle)150°F
Max Temperature (bronze handle)250°F
Max Pressure (UHMW polyethylene handle)150 psi
Max Pressure (nominal)230 psi at 72°F
100 psi at 250°F

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