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Valve series and Product finder

Our product portfolio comprises fittings both for ambient and cryogenic temperatures, with high-precision control valves, globe valves, check and blow-off valves and strainers for installation in valve boxes, fitted in vacuum jackets or for regular installation into pipes in XXS and XXL sizes between DN4 and DN300. Valves with straight or angle body type are made from solid stainless steel and sealed to the environment with bellows.


Below you’ll find an overview of the features and functions of our high-quality valves – from NOVIS series 500 to BALANS series 7100.
Use the product finder to search for the right valve by specification, if you prefer.

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:

Product features

Product features

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  • NOVIS 500

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    Series NOVIS 500

    NOVIS 500 is our entry-level series of affordable cryogenic globe and control valves, consisting of a standardised design without the need for adaptation

    Essential product features:

    • Cryogenic valve series for installation in regular pipes
    • Media temperatures ranging from -196° C to +50° C (77K to 323K)
    • Manual or pneumatic actuation Bonnet extension with valve body in Y-shape
    • Sealing to the outside by gland packing
    • High Kv value even in partially opened condition
    • Connections by welding ends Nominal pressure level: PN25
    • Nominal diameters: DN10 to DN25 (other sizes available on request) 

    Forward to series

  • Univers 1600

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    Series UNIVERS 3200

    Essential product features:

    • Cryogenic globe valve with small nominal diameters from DN4 to DN10
    • Medium temperatures ranging from -271° C to -30° C (2 K to 243 K)
    • Manual or pneumatic actuator
    • Available as straight body (standard) or angle version (optional)
    • For gaseous and liquefied media
    • Compact body design
    • Low heat input
    • For use with low media pressure up to a maximum 25 bar
    • Nominal pressure: PN40 manually operated, PN25 pneumatic
    • Nominal sizes: DN4 to DN10

    Forward to Series

  • Univers 4200

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    Series UNIVERS 4200

    Essential product features:

    • High pressure globe valve or check valve
    • Medium temperatures ranging from -30° C to + 50° C (243 K to 323 K)
    • Globe valve with manual or pneumatic actuator
    • Application with gaseous media
    • Straight body type
    • For installation in vacuum-jacketed medium pipes
    • Nominal pressure: PN250
    • Nominal sizes: DN4 to DN25

    Forward to series

  • Univers 4200

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    Series UNIVERS 4200

    Essential product features:

    • High pressure globe valve or check valve
    • Medium temperatures ranging from -30° C to + 50° C (243 K to 323 K)
    • Globe valve with manual or pneumatic actuator
    • Application with gaseous media
    • Straight body type
    • For installation in vacuum-jacketed medium pipes
    • Nominal pressure: PN250
    • Nominal sizes: DN4 to DN25

    Forward to series

  • Univers 4300

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    Series UNIVERS 4300

    Essential product features:

    • High-pressure globe valve
    • Medium temperatures ranging from -30° C to + 50° C (243 K to 323 K)
    • Available as straight body (standard) or angle version (optional)
    • For gaseous media
    • Not intended for outdoor use
    • Nominal pressure: PN250
    • Nominal sizes: DN4 to DN50

    Forward to series

  • Balans 7100

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    Series BALANS 7100

    Essential product features:

    • High pressure valve for up to 360 bar operating pressure
    • Ambient medium temperature ranging from -30° C to + 50° C (243 K to 323 K)
    • Cryogenic medium temperature ranging from -271° C to -30° C (2 K to 243 K)
    • Manual or pneumatic actuator
    • Straight body type
    • Low actuating forces up to nominal pressure due to balanced valve lift
    • High tightness at seat, even at high pressure levels
    • Installation in any mounting position possible
    • Nominal pressure: PN360
    • Nominal sizes: DN10 to DN40

    Forward to series

  • Univers 1200 ambient

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    Series UNIVERS 1200 ambient

    Essential product features:

    • Valve for ambient medium temperatures ranging from -30° C to + 50° C (243 K bis 323 K). Optional version for media temperature up to 100° C (373 K) possible. Higher media temperatures available on request.)
    • Adaptable for various environmental conditions (installation in seawater environment, desert or cold conditions)
    • Globe, control or check valve and filter available
    • For gaseous media up to 40 bar operating pressure (optional version up to 63 bar available on request)
    • Available with manual, pneumatic, electric or solenoid actuation
    • Available as straight body (standard) or angle version (optional)
    • Nominal pressure: PN 40
    • Nominal sizes: DN 10 to DN 300

    Forward to series

  • Univers 1200 kryogen

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    Series UNIVERS 1200 cryogenic

    Essential product features:

    • Available as globe, control or check valve and filter with stem extension
    • Cryogenic valve suitable for medium temperatures ranging from -271° C to -30° C (2K to 243K)
    • For gaseous media up to 40 bar operating pressure (optional version up to 63 bar available on request)
    • Available with manual, pneumatic, electric or solenoid actuation
    • Available as straight body (standard) or angle version (optional)
    • Adaptable to various environmental conditions (installation in seawater environment, desert or cold condi-tions)
    • For installation in vertical position or inclination of up to a maximum of 30° 
    • Nominal pressure: PN40
    • Nominal sizes: DN10 to DN300

    Forward to series

  • Univers 800

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  • Stick 900

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  • Frees 1200

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  • Univers 1600

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  • Magros 1500

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Control Valve (CV)
Number of found questions:  

Control Valve (CV)

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  • How does a control valve work?

    A control valve, or regulation valve, serves as an actuator in a control loop. As a throttle device, it enables the desired volume of flow to be set in a pipeline. Control valves from STÖHR ARMATUREN control the flow in a process plant. For this purpose, the valve stem (spindle) is connected to the valve cone. This closes the valve seat ring by resting against the media pressure. When the spindle moves up, the flow opens and increases the flow rate depending on the profile of the control cone. 

  • What are the physics during the control process?

    Closing the flow narrows the cross-section of the flow. The pressure of the medium decreases, and its flow rate increases. After the cross-sectional constriction, the velocity of the medium returns to around its former value, assuming the pipe diameter before and after the throat is the same, though it is common for a pressure drop ("ΔP") to remain. This can be indicated as a characteristic value. The geometric shape of the cone determines the flow characteristic. This can be carried out in a linear or equal percentage manner, or according to customer-specific requirements. 

  • How is precise regulation achieved?

    Control valves are typically controlled by an automated actuator. Manual control valves may be used, but these are less accurate. Most actuators are pneumatic, but electrical and solenoid actuators are also available. In addition to the pneumatic actuator, a control valve is usually equipped with a position controller (IP controller), and a limit switch may be used as backup. 

Check Valve (CHK)

Check Valve (CHK)

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  • How does a check valve work?

    A check valve is a valve that opens the flow of the medium in only one direction – the flow direction – and closes against the recirculating flow of media. The medium can be both in gaseous or liquid state. 

  • How does the closing process work on the check valve?

    In spring-loaded check valves, the shut-off element takes the form of a plate, ball or cone which opens the valve when the media begins to flow in the intended direction, creating a pressure that’s greater than the closing force of the spring. This spring closes the shut-off element when the media pressure falls below the closing pressure of the spring force, or when the medium flows in the opposite direction.

    A spring-less check valve – such as the STÖHR Magros Series 1500 – opens its valve plug when the pressure of the media flow is greater than the forces of attraction of the magnet located in the valve housing. As the opening increases, the force needed to open the cone further reduces. Thus, the energy loss at fully open poppet is comparatively lower than that of a spring-loaded check valve. Unlike the spring, the magnet is not subject to material fatigue or wear, and hence magnetically loaded check valves can be described as being maintenance-free. 

  • How does an axial overflow check valve work?

    An overflow valve is an axially aligned valve in which the medium flows along the direction of construction. The media pressure prevents the closing of the valve by pressing a ball against a spring. As soon as the media pressure falls below the spring force, the valve closes. In the open state – in which the spring tension is less than the media pressure – the medium flows past the ball on the valve seat (overflow). 

Globe Valve (GV)

Globe Valve (GV)

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  • How does a globe valve work?

    A globe valve – often referred to as an open/close valve or shut-off valve – controls the opening and closing of flow openings or medium pipes, and is used to regulate the flow in fluid and gas installations. Globe valves are operated manually using a hand wheel, by a motor, or by an external drive, which can be pneumatic, electric or magnetic. While ball valves are shut off with a hand movement, the flow is continuously throttled by axial rotation of the spindle in stroke valves, while the cross-sectional area of the valve opening is gradually reduced until the shut-off cone rests flat on the valve seat and interrupts the media flow. 

  • Can a globe valve also be used for flow regulation?

    The globe or shut-off valve is intended to achieve both full flow and full shut-off of flow. To achieve shut-off, a shut-off cone rests flat on the valve seat and is pressed against the medium flow. A controlled medium flow is not possible with a shut-off valve. 

Strainer (STR)

Filter (STR)

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  • How does a gas filter work?

    In fluid technology, a filter or strainer retains solids from a gas or liquid flow – much like a sieve. The solid-free phase is usually referred to as filtrate in the filtration of liquids, and in gas filtration as pure gas. Filtration is especially important in the gas phase, where gas flows through the valve seat into a filter cartridge and is pushed through the filter meshes. 

  • What happens during the filtration process?

    The driving force of filtration is the pressure difference that occurs in the transport medium before and after the filter. The medium is pressed through the filter with excess pressure. Once the medium has passed through the filter, a pressure drop ("ΔP") occurs. The smaller the filter mesh, the higher the resulting pressure loss. It may be possible to minimise this loss of pressure by enlarging both the filter housing and the filter insert (also known as the filter cartridge). 

  • What filter mesh sizes does STÖHR ARMATUREN offer?

    Gas filters consist of a permeable filter mesh made of stainless steel wire of different qualities welded to a steel ring at the top and bottom. The fabric may have different-sized passages, the spacing of which is typically between a minimum of 3μ and a maximum of 100μ – often referred to as mesh size. The standard mesh size for filters from STÖHR ARMATUREN is 40μ. Other mesh sizes are available on request. 

  • Can a polluted filter be cleaned?

    If a filter insert becomes polluted, it can easily be removed from its housing, cleaned with distilled water or nitrogen, and reinstalled. Start by depressurising the pipe, then loosen the screws in the housing on top of the filter and remove the filter cartridge. After cleaning, the filter cartridge can simply be screwed into a thread at the seat, or inserted without threading. See the operating and maintenance manual for full details.

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. 

Valve stem extension

Valve stem extension

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  • Why do cryogenic valves have an extension of the valve stem?

    The extension of the valve stem is required to protect the actuator against the freezing and external icing that occurs due to the cold of the liquid gas.
    When starting a cryogenic media flow, the heat input of the still uncooled pipe or fitting briefly creates a gas cloud from the liquid media stream by heat input, and the gas cloud rises up the valve stem. Once the liquid gas follows, the gas cushion is usually maintained. This prevents the liquid gas from rising to the top of the valve stem and hindering the mobility of the actuator by freezing – at which point it would become impossible to close the valve. Cryogenic valves must be installed in an upright position, with the actuator facing upwards, and a maximum of 30° lateral inclination. If the slope is greater than 30° a longer stem extension is required to prevent freezing.

  • Are the specifications for the mounting position of a valve compulsory?

    Cryogenic valves must be installed in an upright position, with the actuator pointing upwards and a maximum of 30° lateral inclination. At a greater incline, with a horizontal installation position (an incline of around 90° to the vertical axis) or an overhead installation (an incline of around 180° to the vertical axis), the gas cushion would escape via the media pipe. If this installation position is necessary from a system design perspective, (where space is tight or improved access for operation is needed) our TD valve variant must be selected for series 900 or 1200 (FREES) to permit this. 

  • What is the stem extension of a valve?

    The stem extension measures the length of the extension of a cryogenic valve stem from the centre of the pipe to the bottom of the welding flange. Typical stem extension dimensions must not be significantly undercut, to prevent the actuator from freezing. If a longer extension is required for plant design or space reasons, get in touch. We may be able to create a bespoke extension, subject to manufacturing limitations. 

  • Why does the stem extension of different cryogenic valves differ in length?

    The length of the valve stem is selected to avoid freezing of the actuator at a professional installation position. The extension is calculated on the basis of the expected heat input. Different nominal widths and housing shapes result in different extensions of the valve stem.

  • What should be considered when specifying a control cone?

    The geometric shape of the control cone determines the flow characteristic of this valve. Our control valves are equal percentage as standard but can also be designed as linear or customer-specific flow characteristic, and can be adapted by mounting a valve plug with a suitable profile.
    As well as the flow characteristic, the flow ratio determines the control characteristic of the valve. The control ratio describes the ratio between minimum and maximum achievable flow, with a ratio of 1:30 for a simple control and 1:50 for a more precise control – reaching up to 1:100, where 100 steps are available between the closed state and full opening of the valve cone for adjustment. The larger the stroke of the valve – in other words, the distance between the valve seat and full opening, measured in millimeters – the more accurately the media flow can be regulated.  

Vacuum insulation

Vacuum insulation

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  • Are STÖHR valves suitable for installation in vacuum-insulated pipes?

    The installation of a cryogenic valve into a vacuum-insulated line allows a massive reduction of the heat input from the immediate environment into the valve. Vacuum insulation is usually combined with an insulation by wrapping a multilayer insulation folio (MLI) against thermal radiation around.  The vacuum housing is connected to the valve at the welding flange. Most STÖHR cryogenic valve series are suitable for installation in vacuum-insulated lines. In addition to the welding flange, they are designed to prevent the valve leaking to the outside, and thereby breaking the vacuum. Use our product configurator to check the individual suitability of the selected valve series. 

  • Does STÖHR ARMATUREN supply valves with vacuum-insulated housing?

    Our cryogenic valves for installation in vacuum-insulated piping systems can be delivered with housing ex-works as an option. The valve body is wrapped in a multilayer folio for superinsulation for high thermal quality. The housing is made of stainless-steel tubes that are welded to the welding flange. The jacketed valve can be installed in rigid or flexible transfer lines without further preparation. For this purpose, the valve is either configured with an end connection for welding or with a coupling. Please specify the precise dimensions you require on your request for quotation. 

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

XXL sizes – a size class of its own.
XXL-fittings up to DN300

Search and find

Our easy-to-use product finder will help you find the valve you are looking for. Select from our standard valve portfolio and our special valve range. You can either save it to the notepad and later send it to STÖHR together with other items marked there, or send it to STÖHR directly with a detailed specification.

Start by looking for the valve:

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 Globe Valve Cryogenic Valve 15 – 25 MP (25 bar) manual No
Novis 500 Globe Valve Cryogenic Valve 15 – 25 MP (25 bar) pneumatic No
Novis 500 Control Valve Cryogenic Valve 15 – 25 MP (25 bar) pneumatic adjustable No
Univers 800 Globe Valve Cryogenic Valve 10 – 50 MP (45 bar) manual No
Univers 800 Globe Valve, check function integrated Cryogenic Valve 10 – 50 MP (45 bar) manual No
Sticks 900 Globe Valve Cryogenic Valve 15 MP (25 bar) manual Std
Sticks 900 Globe Valve Cryogenic Valve 15 MP (25 bar) pneumatic Std
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
Sticks 900 Strainer Cryogenic Valve 15 MP (18 bar) Std
Univers 1200 Globe Valve Ambient Valve 10 – 300 MP manual No
Univers 1200 Globe Valve Ambient Valve 10 – 150 MP pneumatic No
Univers 1200 Globe Valve Ambient Valve 10 – 40 MP electric No
Univers 1200 Globe Valve Ambient Valve 10 – 50 MP solenoid No
Univers 1200 Control Valve Ambient Valve 10 – 150 MP pneumatic adjustable No
Univers 1200 Check Valve Ambient Valve 10 – 100 MP spring based No
Univers 1200 Strainer Ambient Valve 10 – 100 MP No
Univers 1200 Globe Valve Cryogenic Valve 10 – 300 MP manual Opt
Univers 1200 Globe Valve Cryogenic Valve 10 – 150 MP pneumatic Opt
Univers 1200 Control Valve Cryogenic Valve 10 – 150 MP pneumatic adjustable Opt
Univers 1200 Check Valve Cryogenic Valve 10 – 100 MP spring based Opt
Univers 1200 Strainer Cryogenic Valve 10 – 100 MP Opt
Magros 1500 Check Valve Ambient Valve 6 – 100 MP solenoid No
Magros 1500 Check Valve Cryogenic Valve 6 – 100 MP solenoid No
Univers 1600 Globe Valve Cryogenic Valve 2 – 300 MP manual Std
Univers 1600 Globe Valve Cryogenic Valve 2 – 300 MP pneumatic Std
Univers 1600 Control Valve Cryogenic Valve 2 – 300 LP, MP pneumatic adjustable Std
Univers 3200 Globe Valve Cryogenic Valve 4 – 10 MP manual Opt
Univers 3200 Globe Valve Cryogenic Valve 4 – 10 MP (25 bar) pneumatic Opt
Univers 4200 Globe Valve Ambient Valve 4 – 25 HP (250 bar) manual No
Univers 4200 Globe Valve Ambient Valve 4 – 25 HP (250 bar) pneumatic No
Univers 4200 Check Valve Ambient Valve 4 – 25 HP (250 bar) spring based No
Univers 4200 Globe Valve Cryogenic Valve 4 – 25 HP (250 bar) manual Opt
Univers 4200 Globe Valve Cryogenic Valve 4 – 25 HP (250 bar) pneumatic Opt
Univers 4300 Globe Valve Ambient Valve 4 – 50 HP (250 bar) manual No
Univers 4300 Globe Valve Ambient Valve 4 – 50 HP (250 bar) pneumatic No
Balans 7100 Globe Valve Ambient Valve 10 – 40 HP (360 bar) manual No
Balans 7100 Globe Valve Ambient Valve 10 – 40 HP (360 bar) pneumatic No
Balans 7100 Globe Valve Cryogenic Valve 10 – 40 HP (360 bar) manual No
Balans 7100 Globe Valve Cryogenic Valve 10 – 40 HP (360 bar) pneumatic No
Locks Globe Valve Ambient Valve 10 MP (24 bar) manual No
Ellips 1700 Globe Valve Cryogenic Valve 8 – 100 MP (25 bar) manual Opt
Ellips 1700 Globe Valve Cryogenic Valve 8 – 100 MP (25 bar) pneumatic Opt
Sticks 900 TD Globe Valve Cryogenic Valve 15 MP (25 bar) manual Std
Sticks 900 TD Globe Valve Cryogenic Valve 15 MP (25 bar) pneumatic Std
Sticks 900 TD Control Valve Cryogenic Valve 15 LP, MP (25 bar) pneumatic adjustable Std
Frees 1200 TD Globe Valve Cryogenic Valve 10 – 50 MP manual Opt
Frees 1200 TD Globe Valve Cryogenic Valve 10 – 50 MP pneumatic Opt
Frees 1200 TD Control Valve Cryogenic Valve 10 – 50 MP pneumatic adjustable Opt
Blasts 2600 Relief Valve Ambient Valve 10 – 50 MP spring based No
Blasts 2600 Relief Valve Ambient Valve 10 – 50 MP spring based No
Blasts 2600 Relief Valve Ambient Valve 6 – 10 MP spring based No
Axius 1400 Globe Valve Cryogenic Valve 6 – 80 HP (420 bar) pneumatic No
UHP 800 Globe Valve, Relief Valve Ambient Valve 10 – 15 UHP (800 bar) manual, pneumatic No
NPPs Globe Valve, Check Valve Ambient Valve 16 – 250 16 - 250 bar manual, solenoid No
Axius 1400 Globe Valve Cryogenic Valve 6 – 80 HP (420 bar) pneumatic No