> This Valve Is An Excellent Choice For Utility And Process Fluids – Discussion with Tom Preston (Top Line Technical Product Specialist)

Top Line’s TOP-FLO® tank bottom ball valve is an excellent choice for utility and process fluids within the hygienic industries where complete CIP is not an absolute requirement. The tank bottom type ball valve is available in ½” through 6” sizes for both TF4 Series food grade and 77 Series pharmaceutical grade valves.

Unlike many competitors that provide an investment cast weld flange, Top Line’s tank bottom weld flange is machined from solid round 316L stainless steel bar stock per the ASME SA-479 specification.  The use of the ASME SA-479 material is ideally suited to comply with the requirements within Section VIII, Division 1 of the ASME Boiler & Pressure Vessel Code when an ASME stamped tank is being manufactured.

Standard and optional features:

  • Weld tank flange: 316L per ASME SA-479 with original mill test report (MTR)
  • Internal surface finish: 25Ra
  • Conical internal contour of the weld tank flange helps prevent pooling within the tank during drainage
  • “True Port” design which eliminates dead-leg conditions and keeps pressure drops to a minimum.
  • ISO5211 direct mount style pad
    • The direct mount system features a live loaded stem packing that virtually eliminates stem side loading which extends the seal life especially when the valve is automated.
  • Seat material
    • Cavity filled or non-cavity filled PTFE
    • Non-cavity filled 50% SS / 50% PTFE (STFE) for high temp applications (Optional)
  • Manual Operators
    • TF4 Series: ½” – 4” flat type, 6” pipe type
    • 77 Series: ½” – 2” flat type, 2 ½” – 4” pipe type
    • Gear operator with or without chain wheel (Optional)
  • Automation
    • Rack & pinion actuators – coated aluminum
    • Rack & pinion actuatore – stainless steel
    • Electric actuators –
      • Voltages: 24VAC, 24VDC, 120VAC, 220VAC
      • On/Off or Fail-Safe spring return
    • Declutchable gear overdrives in case of power or air pressure loss
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