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Control valves

for precise control of the media flow at cryogenic or ambient media temperatures

Abbreviations keys

Abbreviation key

Media temperature

  • C = cryogenic temperature
  • A = ambient temperature

Pressure range

  • LP = low pressure (below 1 bar)
  • MP = medium pressure (up to 40/45/63 bar)
  • HP = high pressure (250 to 420 bar)
  • UHP = ultra-high pressure (>> 420 to 1.000 bar)

Vacuum jacketing

  • No = not suitable for installation in vacuum-jacketed pipes
  • Std = for installation in vacuum-jacketed pipes
  • Opt = suitable for vacuum-jacketed pipes, vacuum flange as option

Function

  • GV = Globe valve
  • CV = Control valve
  • CHK = Check valve
  • STR = Strainer
  • OV = Overflow valve
  • RV = Relief valve

Actuation

  • M = manual
  • P = electro-pneumatic
  • PR = electro-pneumatic with IP regulator
  • E = electric
  • S = solenoid
  • SPR = spring-based

 

Overview and worth knowing:

Actuator

Actuator

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  • What types of actuator can be used with STÖHR valves?

    Depending on the valve series, our valves can be equipped with a manual drive (handwheel), pneumatic piston actuator, pneumatic diaphragm actuator, electric actuator, hydraulic driven actuator or solenoid actuator. Available combinations can be found in our product catalogue or on this website.

    Depending on the requirements of your application, manual override may be required on automated actuators to close the valve in the event of a malfunction, such as power failure or loss of pressure in the pneumatic line. STÖHR ARMATUREN offer manual override as an option for many types of actuators. Please specify your requirements when requesting a quote. 

  • Which pneumatic actuators are STÖHR valves equipped with?

    We use our own pneumatic piston actuator for globe valves of up to size DN 100, and source piston or diaphragm actuators from well-known manufacturers for other applications. The standard operating pressure is 6 bar. 

  • Why does STÖHR ARMATUREN offer its own pneumatic actuator?

    Our piston actuator can be customised to suit special operating conditions such as non-industry standard operating pressures, stainless steel manufacture for installation in a marine environment, use of radiation-resistant materials, exclusion of non-ferrous metals, or vacuum-tightness to the environment. 

  • Which electric actuators are used to equip STÖHR valves?

    Our valves are available with electric actuators from well-known manufacturers for shut-off. Please specify the required electrical performance parameters (direct or alternating current, voltage, etc) when requesting a quotation. 

  • Which pneumatic actuators are used by STÖHR for control valves?

    We buy diaphragm actuators for control valves from well-known manufacturers. The brands and products we use are listed in our product catalogue or contained in your offer. ATEX-approved types are required for use with flammable media. If you prefer manufacturers or types other than those we offer as standard, please let us know and we will check for alternatives. 

  • Which operating media are suitable for pneumatic actuators?

    Compressed air is usually used as an operating medium, but nitrogen or intrinsic gas supply may be possible. The standard pressure supply to the pneumatic actuator is 6 bar maximum. If you require another pressure level, please let us know in your quotation request. 

Product philosophy

Product philosophy

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  • What do STÖHR ARMATUREN products have in common?

    All STÖHR products adhere to the following standards:

    • Pressure-bearing parts made of solid material
    • Housing and connections made of stainless steel or special steel
    • High tightness of the first spindle seal to the outside using a bellows seal
    • Additional safety of the second spindle seal using an O-ring or metal ring
    • Media-adequate use of materials (steels and seals)
    • Fulfillment of the required industry standards according to European regulations
    • High operational safety
    • Low maintenance and spare parts requirement
    • Very low failure rates
    • Long lifetime
    • Low lifecycle costs

    detailed description

Distribution philosophy

Distribution philosophy

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  • What are the benefits of dealing with STÖHR ARMATUREN?

    Our customers experience the following advantages:

    • Expert advice and support from true product specialists
    • Bespoke products manufactured to your exact specifications 
    • Help to define your requirements to suit your project
    • Products supplied ready for installation 
    • A fast and effective response to any incidents
    • Long-term replacement supply

    detailed description

Valve Series Function Media-Temp. Nominal Diameters Pressure Range Actuator Vacuum-Insulation
Valve Series Function Media-Temp. Nominal Diameters Pressure Range Actuator Vacuum-Insulation
Novis 500 Control Valve Cryogenic Valve 15 – 25 MP (25 bar) pneumatic adjustable No
Sticks 900 Control Valve Cryogenic Valve 15 LP, MP (25 bar) pneumatic adjustable Std
Sticks 900 Control Valve Cryogenic Valve 15 LP, MP (25 bar) pneumatic Std
Univers 1200 Control Valve Ambient Valve 10 – 150 MP pneumatic adjustable No
Univers 1200 Control Valve Cryogenic Valve 10 – 150 MP pneumatic adjustable Opt
Univers 1600 Control Valve Cryogenic Valve 2 – 300 LP, MP pneumatic adjustable Std
Sticks 900 TD Control Valve Cryogenic Valve 15 LP, MP (25 bar) pneumatic adjustable Std
Frees 1200 TD Control Valve Cryogenic Valve 10 – 50 MP pneumatic adjustable Opt