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BS3-Bellows-Sealed Valves


Hikelok BS3 series bellows-sealed valves are available with 316L stainless steel construction—316L VAR for bodies with butt weld end connections. Working pressure is up to 500 psig (34.4 bar),working temperature is from -40℉ to 200℉ (-40℃ to 93℃). Isolate system fluids and achieve reliable, leak-tight performance with Hikelok BS3 series bellows-sealed valves which use a packless design and a gasketed or welded seal. They are ideal for applications where the seal to atmosphere is critical, and we offer multiple options for general and high-purity service.


  • Maximum working pressure up to 500 psig (34.4 bar)

  • Working temperature from -40℉ to 200℉ (-40℃ to 93℃ )

  • Flow coefficients (Cv) : 0.3 and 0.7

  • Variety of end connections

  • 316 S.S and 316L VAR S.S. materials

  • Panel and bottom mounting

  • Bar, round handle are available

  • Precion-formed metal bellows providers reliable seal

  • Nonrotating stem tip

  • Bonnet seals to body without gasket

  • Actuator-stem coupling design for smooth actuation

  • Every valve is tested with helium for 10s to a maximum leak rate of 4×10-9 std cm3/s


  • Actuator-stem coupling design for positive stem retraction and smooth actuation

  • Union bonnet construction for safety

  • Stem guiding outside of system fluid for clean operation

  • Precision-formed metal bellows for reliability

  • Nonrotating stem tip for increased shutoff cycle life

  • 100% factory tested

More Options

  • Optional 2 way straight,2 way angle,3 way,4 way

  • Optional blue, black,red,green handles

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