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Flowserve Atomac ASG Flanged Sight Glass DN 65 PN16 PFA lined
Product number
Copy to clipboard 350-1100-10
Flowserve Atomac Sight Glass DN65 PFA Lined Flanged connection acc. to DIN EN 1092-2, PN16, Face to Face acc. to DIN EN 558, Series 1, Body Ductile Iron GGG40.3-PFA-ausgekleidet, Glas Borosilicate Glass acc. to DIN 7080, Max. operating pressure 16 bar
Categories :
ASG Sight Glass
Nominal width :
DN65 - 2 1/2'' inch
Design :
2 ways
Body:
Ductile Cast Iron(GGG40.3)+PFA
Price €850.68
€1,012.31 incl. VAT Delivery Time: 2-7 Days
Available: In Stock
GD100 Flange Sight Glass DN 100 PN16 Stainless Steel Pressed Hard Glass
Product number
Copy to clipboard 350-1001-12
Sight glass Flange connection acc. to DIN 2501 PN16, Overall length acc. to EN588-1 Series-1, Housing made of stainless steel (1.4408)(CF8M), Glass made of pressed hard glass, Sealmade of PTFE, Pressure range 10/16 bar
Nominal width :
DN100 - 4'' inch
Body:
Stainless Steel
Seal :
PTFE
Price €1,223.61
€1,456.10 incl. VAT Delivery Time: 2-7 Days
Available: In Stock
Flowserve PFA lined Atomac ASG Flanged Sight Glass DN 50 PN16
Product number
Copy to clipboard 350-1100-09
Flowserve Atomac PFA Lined Sight Glass ASG DN50Flanged connection acc. to DIN EN 1092-2, PN16, Face to Face acc. to DIN EN 558, Series 1, Body Ductile Iron GGG40.3-PFA Lined, Glas Borosilicate Glass acc. to DIN 7080, Max. operating pressure 16 bar
Nominal width :
DN50 - 2'' inch
Categories :
ASG Sight Glass
Design :
2 ways
Body:
Ductile Cast Iron(GGG40.3)+PFA
Price €720.63
€857.55 incl. VAT Delivery Time: 2-7 Days
Available: In Stock
Flowserve Atomac ARV/SG PFA lined check valve with sight glass DN 25
Product number
Copy to clipboard 303-1106-06
PFA lined ball check valve with sight glass DN 25 The ARV/SG sight glass with an integrated check valve is designed for reliable flow control in horizontal and vertical piping systems, offering maximum compatibility and easy installation with a DIN EN 1092-2, PN16 flange connection and face to face length per DIN EN 558 (Series 1). Its PFA-lined ductile iron EN-JS 1049 (GGG40.3) body and flange provide exceptional chemical resistance and corrosion protection. The borosilicate glass (DIN 7080) ensures high transparency and long-term durability, while the PTFE solid ball effectively prevents backflow, ensuring a safe and efficient flow process. Also available with flange connection acc. to ASME Class 150 on request.
Categories :
ARV/SG - Check Valve / Sight Glass Combination
Nominal width :
DN25 - 1'' inch
Body:
Ductile Cast Iron(GGG40.3)+PFA
Flange:
Ductile Cast Iron(GGG40.3)+PFA
Price €1,006.74
€1,198.02 incl. VAT Delivery Time: 2-7 Days
Available: In Stock
Flowserve Atomac ARV/SG PFA lined check valve with sight glass DN 40
Product number
Copy to clipboard 303-1106-08
PFA lined ball check valve with sight glass DN 40 The ARV/SG sight glass with an integrated check valve is designed for reliable flow control in horizontal and vertical piping systems, offering maximum compatibility and easy installation with a DIN EN 1092-2, PN16 flange connection and face to face length per DIN EN 558 (Series 1). Its PFA-lined ductile iron EN-JS 1049 (GGG40.3) body and flange provide exceptional chemical resistance and corrosion protection. The borosilicate glass (DIN 7080) ensures high transparency and long-term durability, while the PTFE solid ball effectively prevents backflow, ensuring a safe and efficient flow process. Also available with flange connection acc. to ASME Class 150 on request.
Categories :
ARV/SG - Check Valve / Sight Glass Combination
Nominal width :
DN40 - 1 1/2'' inch
Flange:
Ductile Cast Iron(GGG40.3)+PFA
Body:
Ductile Cast Iron(GGG40.3)+PFA
Price €1,110.78
€1,321.83 incl. VAT Delivery Time: 10-12 Woche
Available: In Stock
Flowserve Atomac ARV/SG PFA lined check valve with sight glass DN 50
Product number
Copy to clipboard 303-1106-09
PFA lined ball check valve with sight glass DN 50 The ARV/SG sight glass with an integrated check valve is designed for reliable flow control in horizontal and vertical piping systems, offering maximum compatibility and easy installation with a DIN EN 1092-2, PN16 flange connection and face to face length per DIN EN 558 (Series 1). Its PFA-lined ductile iron EN-JS 1049 (GGG40.3) body and flange provide exceptional chemical resistance and corrosion protection. The borosilicate glass (DIN 7080) ensures high transparency and long-term durability, while the PTFE solid ball effectively prevents backflow, ensuring a safe and efficient flow process. Also available with flange connection acc. to ASME Class 150 on request.
Nominal width :
DN50 - 2'' inch
Categories :
ARV/SG - Check Valve / Sight Glass Combination
Body:
Ductile Cast Iron(GGG40.3)+PFA
Flange:
Ductile Cast Iron(GGG40.3)+PFA
Price €1,425.96
€1,696.89 incl. VAT Delivery Time: 2-7 Days
Available: In Stock
Flowserve Atomac ARV/SG PFA lined check valve with sight glass DN 80
Product number
Copy to clipboard 303-1106-11
PFA lined ball check valve with sight glass DN 80 The ARV/SG sight glass with an integrated check valve is designed for reliable flow control in horizontal and vertical piping systems, offering maximum compatibility and easy installation with a DIN EN 1092-2, PN16 flange connection and face to face length per DIN EN 558 (Series 1). Its PFA-lined ductile iron EN-JS 1049 (GGG40.3) body and flange provide exceptional chemical resistance and corrosion protection. The borosilicate glass (DIN 7080) ensures high transparency and long-term durability, while the PTFE solid ball effectively prevents backflow, ensuring a safe and efficient flow process. Also available with flange connection acc. to ASME Class 150 on request.
Categories :
ARV/SG - Check Valve / Sight Glass Combination
Nominal width :
DN80 3'' inch
Flange:
Ductile Cast Iron(GGG40.3)+PFA
Body:
Ductile Cast Iron(GGG40.3)+PFA
Price €1,855.89
€2,208.51 incl. VAT Delivery Time: 2-7 Days
Available: In Stock
Flowserve Atomac ARV/SG PFA lined check valve with sight glass DN 100
Product number
Copy to clipboard 303-1106-12
PFA lined ball check valve with sight glass DN 100 The ARV/SG sight glass with an integrated check valve is designed for reliable flow control in horizontal and vertical piping systems, offering maximum compatibility and easy installation with a DIN EN 1092-2, PN16 flange connection and face to face length per DIN EN 558 (Series 1). Its PFA-lined ductile iron EN-JS 1049 (GGG40.3) body and flange provide exceptional chemical resistance and corrosion protection. The borosilicate glass (DIN 7080) ensures high transparency and long-term durability, while the PTFE solid ball effectively prevents backflow, ensuring a safe and efficient flow process. Also available with flange connection acc. to ASME Class 150 on request.
Categories :
ARV/SG - Check Valve / Sight Glass Combination
Nominal width :
DN100 - 4'' inch
Flange:
Ductile Cast Iron(GGG40.3)+PFA
Body:
Ductile Cast Iron(GGG40.3)+PFA
Price €2,876.40
€3,422.84 incl. VAT Delivery Time: 10-12 Woche
Available: In Stock
Flowserve Atomac ASG Flanged Sight Glass DN 80 PN16 PFA lined
Product number
Copy to clipboard 350-1100-11
Flowserve Atomac Sight Glass DN80 PFA LinedFlanged connection acc. to DIN EN 1092-2, PN16, Face to Face acc. to DIN EN 558, Series 1, Body Ductile Iron GGG40.3-PFA-ausgekleidet, Glas Borosilicate Glass acc. to DIN 7080, Max. operating pressure 16 bar
Categories :
ASG Sight Glass
Nominal width :
DN80 3'' inch
Design :
2 ways
Body:
Ductile Cast Iron(GGG40.3)+PFA
Price €1,061.82
€1,263.57 incl. VAT Delivery Time: 10-12 Woche
Available: In Stock
Flowserve Atomac ASG Flanged Sight Glass DN 40 PN16 PFA lined
Product number
Copy to clipboard 350-1100-08
Flowserve Atomac Sight Glass DN40 Flanged connection acc. to DIN EN 1092-2, PN16, Face to Face acc. to DIN EN 558, Series 1, Body Ductile Iron GGG40.3-PFA-ausgekleidet, Glas Borosilicate Glass acc. to DIN 7080, Max. operating pressure 16 bar
Categories :
ASG Sight Glass
Nominal width :
DN40 - 1 1/2'' inch
Design :
2 ways
Body:
Ductile Cast Iron(GGG40.3)+PFA
Price €685.44
€815.67 incl. VAT Delivery Time: 2-7 Days
Available: In Stock
Flowserve Atomac ASG Flanged Sight Glass DN 200 PN10 PFA lined
Product number
Copy to clipboard 350-1100-16
Flowserve Atomac Sight Glass DN200, Flanged connection acc. to DIN EN 1092-2, PN10, Face to Face acc. to DIN EN 558, Series 1, Body Ductile Iron GGG40.3-PFA-ausgekleidet, Glas Borosilicate Glass acc. to DIN 7080, Max. operating pressure 16 bar
Categories :
ASG Sight Glass
Nominal width :
DN200 - 8'' inch
Design :
2 ways
Body:
Ductile Cast Iron(GGG40.3)+PFA
Price €8,996.40
€10,705.72 incl. VAT Delivery Time: 10-12 Woche
Available: In Stock
Flowserve Atomac ASG Flanged Sight Glass DN 150 PN16 PFA lined
Product number
Copy to clipboard 350-1100-14
Flowserve Atomac Sight Glass DN150, Flanged connection acc. to DIN EN 1092-2, PN16, Face to Face acc. to DIN EN 558, Series 1, Body Ductile Iron GGG40.3-PFA-ausgekleidet, Glas Borosilicate Glass acc. to DIN 7080, Max. operating pressure 16 bar
Nominal width :
DN150 - 6'' inch
Categories :
ASG Sight Glass
Design :
2 ways
Body:
Ductile Cast Iron(GGG40.3)+PFA
Price €4,678.74
€5,567.70 incl. VAT Delivery Time: 10-12 Woche
Available: In Stock
What is a flow sight glass?
A flow sight glass is a pipeline element with a transparent window that gives a clear view of the flowing medium. The body is installed as a flanged sight glass between two pipe flanges or as a threaded sight glass screwed directly into the line. The glass sits in a stainless steel frame and is sealed with a PTFE gasket. A pipeline sight glass serves visual inspection only — it has no shut-off function. The face-to-face length of the flanged version follows EN 558-1 Series 1.
Stainless steel sight glass — GD100 technical data
- Nominal size: DN15 to DN250 (flanged), DN15 to DN50 (threaded)
- Connection: flange PN10/16 to DIN 2501, female thread ISO 7-1 (EN 10226-1) F-F
- Body: stainless steel 1.4408 (CF8M) or ductile iron GGG40.3+PFA
- Glass types: borosilicate (DIN 7080), toughened pressed glass, soda-lime tempered glass
- Gasket: PTFE
- Operating pressure: 10/16 bar
- Temperature: up to +240 °C (glass dependent)
- Face-to-face (flanged): EN 558-1 Series 1
- Conformity:EU Pressure Equipment Directive 2014/68/EU
Borosilicate, toughened pressed glass or soda-lime — which glass to choose?
| Glass type | Standard | Strength | Typical applications |
|---|---|---|---|
| Borosilicate | DIN 7080 | highest temperature & chemical resistance | steam, aggressive liquids, pharma, food |
| Toughened pressed | — | high mechanical impact resistance | industrial standard with impact risk |
| Soda-lime tempered | — | proven standard glass, economical | water, oil, heating, cooling circuits |
Choose a borosilicate sight glass for steam and aggressive media. A toughened pressed sight glass excels in mechanically demanding environments. A soda-lime sight glass is the economical standard for water and oil service.
Flanged sight glass vs. threaded sight glass
A flanged sight glass is installed between two pipe flanges to DIN 2501 PN10/16. The flanged connection suits larger sizes from DN15 to DN250 and higher pressures. Face-to-face length follows EN 558-1 Series 1.
A threaded sight glass is screwed directly into the pipeline with female thread to ISO 7-1 (EN 10226-1). The threaded connection is more compact and suits sizes DN15 to DN50 where space is limited and quick maintenance matters. Both versions use the same stainless steel 1.4408 body and PTFE gasket.
Applications — chemicals, food, pharma and water treatment
A pipeline sight glass is used wherever visual media control improves plant safety. In the chemical industry a stainless steel sight glass with borosilicate monitors reactions and aggressive liquids. In food and pharmaceutical processing the stainless steel body and PTFE gasket deliver the required hygiene. In steam systems the sight glass shows condensate flow ahead of steam traps. In water treatment and cooling systems operators spot turbidity and contamination immediately. An upstream strainer protects the sight glass from coarse particles and extends its service life.
Sight glass in stock — EU-wide delivery
Fergo stocks all 29 sight glass variants for immediate dispatch. Standard shipping via DHL reaches customers across Europe within a few working days. Each flow sight glass ships with datasheet and declaration of conformity. For aggressive media we recommend the PFA-lined sight glass. Check material compatibility with our resistance check tool.
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