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BS1-Bellows-Sealed Valves


Hikelok BS1 series bellows-sealed valves are available in a variety of models for system versatility.Working pressure is up to 1000 psig (68.9 bar),working temperature is from -20℉ to 900℉ (-28℃ to 482℃). Isolate system fluids and achieve reliable, leak-tight performance with Hikelok BS1 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 1000 psig (68.9 bar)

  • Working temperature from -20℉ to 900℉ (-28℃ to 482℃ )

  • Flow coefficients (Cv) from 0.12 to 1.2

  • Variety of end connections

  • 316 S.S., brass and monel 400 materials

  • Panel and bottom mounting

  • Bar, round handle are available

  • Precion-formed metal bellows providers reliable seal

  • Nonrotating stem tip: spherical, conical and regulating

  • Gasket body to bellows seal is standard, weld seal also available

  • Replaceable bellows and stem assembly

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


  • Stainless steel actuator is hardened for strength and wear resistance

  • Actuator-stem coupling design ensures positive stem retraction

  • Precision-formed metal bellows provides reliable seal to atmosphere.

  • Actuator threads are protected from system contaminants

  • Actuator backstop enhances bellows life

  • 100% factory tested

More Options

  • Optional gasket seal, welded seal tip material

  • Optional soft,PCTFE,PEEK,ball,regulating tip type

  • Optional black,red,green,blue handles

  • Optional aluminum bar,stainless steel bar,black knob,pneumatic actuators handles

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