Flow Sight Glasses
Flow sight glasses are suitable for visual inspection of flow and movement in pipelines and containers. Our flow sight glass fittings enable the quick and reliable monitoring of the function and performance of individual devices and entire systems. Thermal processes can also be observed through the sight glasses. MAXOS® supplies you with flow sight glasses in all possible designs and materials.
Our flow sight glasses are available as standard in cast iron, cast steel, or stainless steel, with special materials, such as Hastelloy 2. 4605, also possible. For the chemical industry, we additionally have plastic sight glasses in our range.
UnavailableMG-550Flow sight glass type 550 PN 10/40 - DIN 11869 (old DIN 3237)
Type 550 flow sight glass, similar to DIN 11869, with flanged connections according to DIN EN 1092-1, made of 1.4408 stainless steel and borosilicate glass.
UnavailableMG-670Tubular sight glass type 670 PN 16
The glass-ring Tubular sight glass type 670 was developed for pressures up to 16 bar and provides 360° all-around visibility. It combines high chemical resistance with 360° all-round observation at temperatures of up to 280°C► Learn more now!
UnavailableMG-620KPlastic tubular sight glass type 620K PN 10
Tubular sight glass type 620K made of PP, PVC, or PVDF, ideal for process media without steel contact. Maintenance-free, customizable for quick spare parts.
UnavailableMG-520AHigh-pressure flow sight glass type 520A Class 300/1500 lbs
Discover the robust Typ 520A high-pressure sight glass: durable, long-lasting, and ideal for high-pressure applications in the chemical, pharmaceutical, and food industries.
UnavailableMG-595Flow sight glass type 595 PN 16/400
The Flow sight glass Type 595 with 4-way design offers robust process monitoring and high working pressure up to 400 barg for versatile applications.
UnavailableMG-622Tubular sight glass Type 622 PN 16
Type 622 tubular sight glass with female thread for 360° flow inspection. Sizes 3/8″–2″, PN 16, rated up to 16 barg and 300 °C.
UnavailableMG-530Flow sight glass type 530 PN 10/63
Discover the robust Durchfluss-Schauglas Typ 530, designed for pressures up to 63 barg with DIN EN 1092-1 flanges. Ideal for high-temp applications!
UnavailableMG-5903-way flow sight glass type 590 PN 16/400
Discover the robust Drei-Wege Durchfluss-Schauglas Typ 590, designed for pressures up to 400 barg and compatible with DIN EN 1092-1 flanges.
UnavailableMG-620ATubular sight glass type 620A Class 150
Discover the MAXOS® 620A sight glass for 360° visibility of process media, made from durable borosilicate glass and corrosion-resistant stainless steel flanges.
UnavailableMG-641Glass-ring tubular sight glass Type 641 PN 25/40
Glass-ring tubular sight glass type 641 as a compact intermediate-flange design for DIN flanges. For PN 25/40, DN 10–125, up to 40 barg and 280 °C.
UnavailableMG-640AGlass-ring tubular sight glass Type 640A Class 150
Glass-ring tubular sight glass type 640A as a compact intermediate-flange design for flanges according to ASME B16.5 Class 150 lbs RF. For NPS ½
UnavailableMG-671Tubular sight glass Type 671 PN 25/40
The glass-ring tubular sight glass type 670 has been developed by us for pressures up to 40 bar and a 360° all-around view. It combines high chemical resistance and a 360° all-around observation at temperatures from -200°C to +280°C► Learn more now!
UnavailableMG-530AFlow sight glass type 530A nominal size
Discover the 530A flow sight glass, engineered for industrial pressure applications with durability, safety, and dual viewing windows for real-time process monitoring.
UnavailableMG-550SFlow sight glass type 550S PN 10/40
MAXOS® Type 550S flow sight glass in stainless steel 1.4408 for corrosion-resistant visual flow monitoring in pressurized industrial pipelines.
UnavailableMG-550AFlow sight glass Type 550A Class 150/300 lbs
ANSI flow sight glass Type 550A for international pipeline systems according to ASME B16.5. Available in Class 150/300 lbs and NPS ½
UnavailableMG-550VVacuum sight glass type 550V PN 10/40 - DIN 11869 (old DIN 3237)
Type 550V vacuum sight glass compliant with DIN 11869, old DIN 3237. For vacuum applications to 2 mbar abs., DN 15–200. Enquire now.
UnavailableMG-620Tubular sight glass type 620 PN 10/16
Tubular sight glass type 620 for 360°-flow monitoring in pipelines. With flange connections according to DIN EN 1092-1, DN 15–300, PN 10/16 and up to 16 barg.
UnavailableMG-596Flow sight glass type 596 PN 16/400
Discover the Flow sight glass Type 596 with 4 viewports, ideal for high working pressures up to 400 barg and temperatures up to 320 °C.
UnavailableMG-531Flow sight glass type 531 PN 10/63
Discover the robust Flow sight glass with face to face Type 531 for pressures up to 63 barg, suitable for temperatures up to 320 °C and customizable gaskets.
UnavailableMG-591Flow sight glass type 591 PN 16/400
Discover the robust Flow sight glass with a type designation of 591 for Working pressure up to 400 barg, Flange connection according to DIN EN 1092-1, ideal for retrofitting.
UnavailableMG-551Flow sight glass type 551 PN 16/40
Discover the MAXOS® Flow sight glass type 551 made of stainless steel cast 1.4408, ideal for industrial applications. Robust, corrosion-resistant and reliable!
UnavailableMG-650Tubular sight glass type 650 PN 10
Discover the Rohrschauglas Typ 650, featuring robust 360° visibility, high chemical resistance, and secure sealing for demanding environments.
UnavailableMG-522High-pressure sight glass Type 522 PN 63/400
High-pressure sight glass type 522 with Internal thread / female thread for flow monitoring in pipelines. For BSP or NPT threads, PN 63 to PN 400 and temperatures up to 300 °C.
UnavailableMG-521High-pressure sight glass type 521 PN 63/400
High-pressure sight glass type 521: Robust, durable solution for industrial applications. Ideal for pressure levels up to PN 400 in chemicals, pharmaceuticals, and food.
UnavailableMG-640Glass-ring tubular sight glass Type 640 PN 16
Glass-ring tubular sight glass type 640 as a compact intermediate-flange design for 360°-visual inspection in pipelines. For DN 10–500, PN 16 and up to 16 barg.
UnavailableMG-520High-pressure sight glass type 520 PN 63/400
Type 520 high-pressure flow sight glasses are used to monitor liquid level and flow in piping. Flange connection in accordance with DIN EN 1092-1, DN 25–200, PN 63 to PN 400, temperatures up to 300 °C.