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Sight flow indicator for pipelines with thread or flange

Sight flow indicators can be used to monitor the flow and filling level in a pipeline. They are manufactured in a straightway form and have a window, which can be made of borosilicate glass DIN7080 or soda-lime-glass DIN8902. Which glass you choose depends on the medium in the pipeline and its resistance. Whenever you are dealing with a liquid or gaseous medium, a sight flow indicator should be used. This allows you to not only monitor the filling level in the pipes, but also to detect contamination which could damage the system. Additionally, it allows you to control the flow direction of the medium. Since some liquid and gaseous media are transparent, they are hard to monitor visually. That's why NieRuf offers three varieties of flow sight glasses. The standard model has a drip nozzle and can be used with liquid media such as water. The diameter of the drip nozzle is smaller than the diameter of the flow sight glass, which enables you to see detect the medium. But the sight flow indicator can also come with a rotor or a flap. The medium, whether it is a liquid or a gas, moves the rotor, thereby showing you the flow direction. In the sight flow indicator with flap, the medium must flow from bottom to top, otherwise the flap does not open. Once the medium flows through the pipeline, the movement of the flap indicates this.

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flange-safety vlave DN100/DN100 SF0201, cast steel 1.0619+N EPDM, without lever 2
female thread sight flow indicator DN8 - 1/4" Inch grey cast iron GG25 soda lime glass

Article No.: GS01010001

female thread sight flow indicator DN8 - 1/4" Inch Typ GS01 grey cast iron GG25 soda lime glass graphit max 16 bar
diameter: DN8 - 1/4" Inch
body material: grey cast iron GG25
glass: soda lime glass
product feature:
max. working pressure: max 16 bar
86.90€ *
103.41€ incl. VAT

Delivery time: at stock

Express shipping:

datasheet
flange-safety vlave DN20/DN20 SF0201, cast steel 1.0619+N FPM, without lever 1
female thread sight flow indicator DN10 - 3/8" Inch grey cast iron GG25 soda lime glass

Article No.: GS01010002

female thread sight flow indicator DN10 - 3/8" Inch Typ GS01 grey cast iron GG25 soda lime glass graphit max 16 bar
diameter: DN10 - 3/8" Inch
body material: grey cast iron GG25
glass: soda lime glass
product feature:
max. working pressure: max 16 bar
86.90€ *
103.41€ incl. VAT

Delivery time: at stock

Express shipping:

datasheet
flange sight flow indicator DN150 - 6" Inch FS01 grey cast iron GG25 soda lime glass 3
flow-through sight flow indicator DN8 - 1/4" Inch stainless steel soda lime glass

Article No.: GS03010001

flow-through sight flow indicator DN8 - 1/4" Inch Typ GS03 stainless steel soda lime glass graphit max 16 bar
diameter: DN8 - 1/4" Inch
body material: stainless steel
glass: soda lime glass
product feature:
max. working pressure: max 16 bar
170.90€ *
203.37€ incl. VAT

Delivery time: at stock

Express shipping:

datasheet
flange sight flow indicator DN25 - 1" Inch FS01 grey cast iron GG25 soda lime glass 2
flow-through sight flow indicator DN10 - 3/8" Inch stainless steel soda lime glass

Article No.: GS03010002

flow-through sight flow indicator DN10 - 3/8" Inch Typ GS03 stainless steel soda lime glass graphit max 16 bar
diameter: DN10 - 3/8" Inch
body material: stainless steel
glass: soda lime glass
product feature:
max. working pressure: max 16 bar
170.90€ *
203.37€ incl. VAT

Delivery time: at stock

Express shipping:

datasheet
flange sight flow indicator DN40 - 1 1/2" Inch FS01 grey cast iron GG25 soda lime glass 2
flow-through sight flow indicator DN15 - 1/2" Inch stainless steel soda lime glass

Article No.: GS03010003

flow-through sight flow indicator DN15 - 1/2" Inch Typ GS03 stainless steel soda lime glass graphit max 16 bar
diameter: DN15 - 1/2" Inch
body material: stainless steel
glass: soda lime glass
product feature:
max. working pressure: max 16 bar
170.90€ *
203.37€ incl. VAT

Delivery time: at stock

Express shipping:

datasheet
flange sight flow indicator DN20 - 3/4" Inch FS01 grey cast iron GG25 soda lime glass 2
flow-through sight flow indicator DN20 - 3/4" Inch stainless steel soda lime glass

Article No.: GS03010004

flow-through sight flow indicator DN20 - 3/4" Inch Typ GS03 stainless steel soda lime glass graphit max 16 bar
diameter: DN20 - 3/4" Inch
body material: stainless steel
glass: soda lime glass
product feature:
max. working pressure: max 16 bar
214.20€ *
254.90€ incl. VAT

Delivery time: at stock

Express shipping:

datasheet
flange sight flow indicator DN50 - 2" Inch FS01 grey cast iron GG25 soda lime glass 2
flow-through sight flow indicator DN25 - 1" Inch stainless steel soda lime glass

Article No.: GS03010005

flow-through sight flow indicator DN25 - 1" Inch Typ GS03 stainless steel soda lime glass graphit max 16 bar
diameter: DN25 - 1" Inch
body material: stainless steel
glass: soda lime glass
product feature:
max. working pressure: max 16 bar
257.60€ *
306.54€ incl. VAT

Delivery time: at stock

Express shipping:

datasheet
flange sight flow indicator DN32 - 1 1/4" inch FS01 grey cast iron GG25 soda lime glass 2
flow-through sight flow indicator DN32 - 1 1/4" inch stainless steel soda lime glass

Article No.: GS03010006

flow-through sight flow indicator DN32 - 1 1/4" inch Typ GS03 stainless steel soda lime glass graphit max 16 bar
diameter: DN32 - 1 1/4" inch
body material: stainless steel
glass: soda lime glass
product feature:
max. working pressure: max 16 bar
361.10€ *
429.71€ incl. VAT

Delivery time: at stock

Express shipping:

datasheet
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High quality sigth-flow-indicator

Our sight flow indicators can be made of stainless steel 1.4408, cast iron GS-C 25 or grey cast iron GG25. Whether you choose soda-lime-glass or borosilicate glass, the sight glass is then mounted between the mounting and the base flange using screws. The manufacturer also includes a graphite-seal. Sight-flow-indicators with flap, drip nozzle and rotor can be manufactured as thread sight glasses or flange sight glasses. Thread sight glasses come with internal threads from ¼“ - 2“ inch. Flange sight glasses come in nominal sizes ranging from DN15 to DN200. They are approved for up to PN16, from nominal size DN150 on only for PN10. Sight-flow-indicators withstand temperatures of up to +150°C. They can be mounted in any position, just keep the flow direction in mind. Buy your sight-flow-indicator directly from our online shop, or call our hotline if you need help choosing the right one. We would love to help you find the sight glass that fits your application and medium.

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