List of products by brand Noris Armaturen

Noris Armaturen – Technical profile of a sight flow indicator, tank sight glass and strainer manufacturer

Noris Armaturen is a German manufacturer of visual flow indication and pipeline protection equipment. Its range includes sight flow indicators, tank sight glass fittings, Y strainers, basket strainers, accessories, glass discs, gaskets and lighting units.

The products represented through Philippopoulos S.A. are mainly:

  • double-window sight flow indicators,
  • single-window flow indicators,
  • flow indicators with flap, spinner or ball,
  • high-pressure sight glasses,
  • DIN and ANSI flanged versions,
  • threaded and welded versions,
  • tank sight glasses,
  • Y strainers.

Sight flow indicators are used for local visual confirmation of flow, filling, colour, bubbles, foaming or suspended solids. They are not flowmeters and do not replace calibrated measurement instruments. Their role is direct field observation by operators or maintenance personnel.

Double-window indicators allow observation through the process line. Versions with flap, spinner or ball are useful when the medium is transparent and flow movement is not obvious. High-pressure versions must be selected according to pressure, temperature, glass type and sealing arrangement.

Tank sight glasses are installed on vessels and tanks for local visual inspection. In pressure vessels, they must be treated as part of the pressure boundary. Material, gasket, glass, pressure, temperature and maintenance method must be verified.

Y strainers are used to protect pumps, control valves, meters and downstream equipment from solids, welding debris, rust or commissioning particles. Selection requires mesh size, pressure drop, access for cleaning, drain arrangement and body material.

Noris products are relevant for process engineers, maintenance departments, steam specialists and plant operators requiring simple, mechanical visual indication and protection of industrial piping systems.

Sight Flow Indicators - 881 | Noris Armaturen - Noris Armaturen

Sight Flow Indicators - 881 | Noris Armaturen

Sight Flow Indicators - 881 | Noris Armaturen
Noris Armaturen
NORIS Model 881 – Dual-Sided Flow Indicator with Threaded Connection The NORIS 881 is a straight dual-sided flow indicator with BSP or NPT threaded connections. It is used for visual inspection of liquids and gases in horizontal or vertical pipelines, ensuring flow direction is maintained during installation. Technical Specifications Connections: BSP G...
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Sight Flow Indicators - 881-K | Noris Armaturen - Noris Armaturen

Sight Flow Indicators - 881-K | Noris Armaturen

Sight Flow Indicators - 881-K | Noris Armaturen
Noris Armaturen
NORIS Model 881-K – Threaded Flow Indicator with Vane The NORIS 881-K is a dual-sided flow indicator with BSP G or NPT threaded connections and an internal vane made of 1.4571. It is used for visual monitoring of liquids and gases in small pipelines where immediate flow presence indication is required without electrical signal or flow measurement....
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Sight Flow Indicators - 881-RK/RP | Noris Armaturen - Noris Armaturen

Sight Flow Indicators - 881-RK/RP | Noris Armaturen

Sight Flow Indicators - 881-RK/RP | Noris Armaturen
Noris Armaturen
NORIS Model 881-RK/RP – Threaded Flow Indicator with Spinner The NORIS 881-RK/RP is a dual-sided flow indicator featuring BSP G or NPT threaded connections and an internal spinner. It is utilized for local visual monitoring of liquids and gases in horizontal or vertical lines, with mandatory adherence to flow direction. Technical Specifications...
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Sight Flow Indicators - 880-S | Noris Armaturen - Noris Armaturen

Sight Flow Indicators - 880-S | Noris Armaturen

Sight Flow Indicators - 880-S | Noris Armaturen
Noris Armaturen
NORIS Bauform 880-S – Flow Indicator with Butt Weld Ends The NORIS 880-S is a straight-through, double-sided flow indicator with butt weld ends. It is used for visual inspection of liquids and gases in horizontal or vertical pipelines where flange connections are not specified. The flow direction must be considered during installation. Technical...
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Sight Flow Indicators - 880-SOW | Noris Armaturen - Noris Armaturen

Sight Flow Indicators - 880-SOW | Noris Armaturen

Sight Flow Indicators - 880-SOW | Noris Armaturen
Noris Armaturen
NORIS Bauform 880-SOW – Flow Indicator with Socket Weld Ends The NORIS 880-SOW is a straight-through, dual-sided flow indicator with pipe socket weld connections, designed for local visual monitoring of liquids and gases in pipelines. This series supports both horizontal and vertical installations, with mandatory flow direction verification during setup....
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Sight Flow Indicators - 108-S | Noris Armaturen - Noris Armaturen

Sight Flow Indicators - 108-S | Noris Armaturen

Sight Flow Indicators - 108-S | Noris Armaturen
Noris Armaturen
NORIS Bauform 108-S – Dual-Sided Flow Indicator with Welded Ends The NORIS 108-S is a straight dual-sided flow indicator with butt weld ends. It is used for visual inspection of filling and flow in pipelines without electrical signals or measuring instruments. Installation can be adapted to the line layout, maintaining the flow direction. Operating...
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Sight Flow Indicators - 111-S | Noris - Noris Armaturen

Sight Flow Indicators - 111-S | Noris

Sight Flow Indicators - 111-S | Noris
Noris Armaturen
NORIS Bauform 111-S – Dual-Sided Flow Indicator with Butt Weld Ends The NORIS 111-S is a straight-through, dual-sided flow indicator with butt weld ends, designed for visual inspection of filling and flow in pipelines. Its body geometry minimizes residual liquid retention when installed horizontally, beneficial for discharge, cleaning, or product change...
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Sight Flow Indicators - 112-S | Noris - Noris Armaturen

Sight Flow Indicators - 112-S | Noris

Sight Flow Indicators - 112-S | Noris
Noris Armaturen
NORIS Bauform 112-S – Dual-Sided Flow Indicator with Butt Weld Ends The NORIS 112-S is a straight-through, dual-sided flow indicator with butt weld ends. It is used for visual inspection of filling and flow in pipelines, without signal output or flow measurement function. In horizontal installations, the body geometry minimizes residual liquid retention...
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Sight Flow Indicators - 911-S | Noris - Noris Armaturen

Sight Flow Indicators - 911-S | Noris

Sight Flow Indicators - 911-S | Noris
Noris Armaturen
NORIS Bauform 911-S – Dual-Sided Flow Indicator with Eccentric Butt Weld Ends The NORIS 911-S is a dual-sided sight flow indicator with butt weld ends, designed for horizontal installation in higher pressure lines. The eccentric connection arrangement allows for operation without residual liquid retention in the body when the indicator is mounted...
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Sight Flow Indicators - 912-S | Noris - Noris Armaturen

Sight Flow Indicators - 912-S | Noris

Sight Flow Indicators - 912-S | Noris
Noris Armaturen
NORIS Model 912-S – High-Pressure Flow Indicator with Welded Ends The NORIS 912-S is a dual-sided flow indicator from the 912 series, designed for visual inspection of liquids and gases in high-pressure lines. Butt weld connections are selected when piping does not accommodate flanges or when a permanent welded integration into the line is required. The...
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Sight Flow Indicators - 920 | Noris - Noris Armaturen

Sight Flow Indicators - 920 | Noris

Sight Flow Indicators - 920 | Noris
Noris Armaturen
NORIS Bauform 920 – Dual-Sided Angular Flow Indicator The NORIS 920 is an angular flow indicator designed for visual monitoring of liquids and gases in pipelines. It is utilized when the pipeline changes direction and simultaneous local observation of flow, filling, bubbles, or fluid color change is required. It is a passive component and does not...
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Sight Flow Indicators - 972 | Noris - Noris Armaturen

Sight Flow Indicators - 972 | Noris

Sight Flow Indicators - 972 | Noris
Noris Armaturen
NORIS Type 972 – Three-Way Flow Indicator The NORIS 972 is a flow indicator with three connections, designed for visual inspection of liquids and gases in pipelines. It is used when the observation point is at a branch or change in flow direction, requiring local confirmation of fluid presence, bubbles, filling, or color change. Installation can be...
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Sight Flow Indicators - 974 | Noris - Noris Armaturen

Sight Flow Indicators - 974 | Noris

Sight Flow Indicators - 974 | Noris
Noris Armaturen
NORIS Bauform 974 – Four-Way Flow Indicator The NORIS 974 is a 4-way flow indicator featuring four flanged ports and glass observation plates on both sides. It is utilized for visual monitoring of flow and fill levels at branching points where straight or angular indicators are insufficient. Operating Conditions Connection: Flanges DIN PN16 / PN25 / PN40...
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Sight Flow Indicators - 020 | Noris - Noris Armaturen

Sight Flow Indicators - 020 | Noris

Sight Flow Indicators - 020 | Noris
Noris Armaturen
Tubular Flow Indicator NORIS Bauform 20 The NORIS 020 is a tubular flow indicator with flanged connection, designed for visual monitoring of liquids and gases in horizontal or vertical pipelines. It serves as a local monitoring point for flow, filling, bubbles, drainage, or fluid presence in process networks. Operating Conditions Connections: DIN flanges...
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Sight Flow Indicators - 020-A | Noris - Noris Armaturen

Sight Flow Indicators - 020-A | Noris

Sight Flow Indicators - 020-A | Noris
Noris Armaturen
Tubular Flow Indicator NORIS Bauform 20-A The NORIS 020-A is a tubular flow indicator with ANSI 150 lbs RF flanges, designed for local visual monitoring of liquids and gases in horizontal or vertical pipelines. It is used when confirmation of flow presence, bubbles, fluid color, filling, or draining is required without a measuring instrument. Key...
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Sight Flow Indicators - 025 | Noris - Noris Armaturen

Sight Flow Indicators - 025 | Noris

Sight Flow Indicators - 025 | Noris
Noris Armaturen
Tubular Flow Indicator NORIS Bauform 25 The NORIS 025 is a tubular flow indicator featuring a Safety Seal-System sealing mechanism compliant with DIN 28121. It is installed in horizontal or vertical pipelines for visual monitoring of liquids and gases, without measurement instruments or electrical power. Operating Conditions Connection: DIN flanges PN10...
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Sight Flow Indicators - 025-A | Noris - Noris Armaturen

Sight Flow Indicators - 025-A | Noris

Sight Flow Indicators - 025-A | Noris
Noris Armaturen
Tubular Flow Indicator NORIS Bauform 25-A The NORIS 025-A is a tubular flow indicator equipped with ANSI 150 lbs flanges and a Safety Seal-System according to DIN 28121. It is designed for visual monitoring of liquids and gases in horizontal or vertical pipelines, without requiring electrical power or control signals. Technical Specifications Connection:...
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Sight Flow Indicators - 025-B | Noris - Noris Armaturen

Sight Flow Indicators - 025-B | Noris

Sight Flow Indicators - 025-B | Noris
Noris Armaturen
NORIS Bauform 25-B – Tubular Flow Indicator with Ball The NORIS 025-B is a dual-sided tubular flow indicator with DIN PN10/PN16 flanges and a Safety Seal-System according to DIN 28121. It is used in vertical pipelines for visual monitoring of liquids and gases. The flow must be from bottom to top, allowing the internal ball to rise and indicate flow...
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Sight Flow Indicators - 880-HM | Noris - Noris Armaturen

Sight Flow Indicators - 880-HM | Noris

Sight Flow Indicators - 880-HM | Noris
Noris Armaturen
NORIS Bauform 880-HM – Flow Indicator with Heating Jacket The NORIS 880-HM is a straight-line sight flow indicator, based on the Bauform 880 series, featuring an integrated heating jacket. It is utilized when thermal losses or fluid cooling in the observation area need to be minimized. A suitable heating or thermostatic medium can circulate within the...
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Sight Flow Indicators - 880-I | Noris - Noris Armaturen

Sight Flow Indicators - 880-I | Noris

Sight Flow Indicators - 880-I | Noris
Noris Armaturen
NORIS Bauform 880-I – Flow Indicator with Internal Glass Washing The NORIS 880-I is a specialized dual-sided flow indicator from the 880 series, featuring an integrated spray head for cleaning the internal surface of glass windows. It is utilized when visibility may be compromised by deposits, condensation, colored fluids, or process contaminants....
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Sight Flow Indicators - 880-W | Noris - Noris Armaturen

Sight Flow Indicators - 880-W | Noris

Sight Flow Indicators - 880-W | Noris
Noris Armaturen
NORIS Bauform 880-W – Flow Indicator with Wiper System The NORIS 880-W is a dual-sided flow indicator equipped with a mechanical wiper for glass plates. It is utilized when the viewing surface may be obscured by crystallized media, dust, or process contaminants, necessitating cleaning without disassembling the indicator. Operation The operator activates...
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Sight Flow Indicators - 880-D | Noris - Noris Armaturen

Sight Flow Indicators - 880-D | Noris

Sight Flow Indicators - 880-D | Noris
Noris Armaturen
NORIS Bauform 880-D – Dual-Sided Flow Indicator with Double Glass The NORIS 880-D is a straight-through flow indicator featuring double glass windows on each observation side. This construction is utilized when enhanced protection of the glass from external mechanical impact or installation environment is required, without altering the fundamental...
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Sight Flow Indicators - 885-D | Noris - Noris Armaturen

Sight Flow Indicators - 885-D | Noris

Sight Flow Indicators - 885-D | Noris
Noris Armaturen
NORIS Bauform 885-D – Flow Indicator with Dual Safety Windows The NORIS 885-D is a straight-through sight flow indicator, compliant with DIN 3236, featuring flanged connections DIN PN16 or PN25. It is equipped with dual glass plates on each observation side, ensuring each plate withstands the full nominal pressure. In the event of one plate failing, the...
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Sight Flow Indicators - 880-V | Noris - Noris Armaturen

Sight Flow Indicators - 880-V | Noris

Sight Flow Indicators - 880-V | Noris
Noris Armaturen
NORIS Bauform 880-V – Flow Indicator with Vacuum Sealing The NORIS 880-V is a straight-through, dual-sided flow indicator designed for lines where vacuum operation may cause leaks in standard sealing. The V version utilizes PTFE gaskets for medium vacuum or O-rings for higher vacuum levels, as recommended in the technical datasheet. Technical...
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