Within closed pipework or pressure tanks, it can be helpful to install sight flow indicators to visually monitor and control the media. The sight flow indicator allows you to monitor the direction of flow, and to check for foreign particles, which could damage the machine or the application. That makes the sight flow indicator perfect for visual monitoring, for example in a round, oval or rectangular shape. The construction resembles DIN 28120 or DIN 128121, which allows for easy welding. NieRuf is your partner for high-quality sight flow indicators.
sight flow indicator DN40 - 1 1/2" Inch Typ GS02 GS - C25 soda lime glass graphit max 16 bar
flow-through sight flow indicator 1 1/4" version with flap Typ GS03 borosilicate glass graphit max 16 bar
flange sight flow indicator DN15 stainless steel flap Typ FS03 soda lime glass max 16 bar version with flap
Sight glass fitting BS01 DN100 - 4" Inch aus stainless steel 1.4571 to be welded directly to tank seal EPDM glass borosilicate glass 2,5bar
Sight glass fitting BS01 DN150 - 6" Inch aus stainless steel 1.4571 to be welded directly to tank seal PTFE glass borosilicate glass 2,5bar
flange sight flow indicator version with PTFE-spinner type FS03 made of stainless steel 1.4408, borosilicate glass and seal graphit DN32 flange PN40 40 bar
Sight glass fitting BS04 DN50 - 2" Inch aus stainless steel 1.4571 to be welded directly to tank Glas seal graphite borosilicate glass 0,0 bar pressureless
flange sight flow indicator version with flap type FS02 made of carbon steel 1.0619, borosilicate glass and seal graphit DN150 - 6" Inch flange ANSI 150 16 bar
The flange sight flow indicator has to comply with a variety of guidelines, norms and requirements. We provide DIN 3237 valves from stock, whether you need borosilicate glass DIN 7080 or soda lime glass DIN 8902. The choice of the glass depends on the temperature or the media and the surrounding, as well as the pressure range of the media. Depending on the media, the sight flow indicator will be made from stainless steel (1.4408/V4A), brass or cast steel. Depending on the pipeline system, we provide sight flow indicators with flange or thread connection in sizes DN15, DN20 up to DN65 and DN80 up to DN200, or, for fast assembly with a female thread from ¼“ to ½“ and up to 2“ from stock. Please contact us for irregular sizes and special design.
Sight flow indicators are usually built into a pipeline system as flange sight flow indicators. Visual monitoring can be made easier by using a flap or a PTFE spinner, which move when there is flow. Container flow indicators however, are usually used within closed containers such as boilers, oil tanks and silos. This enables you to visually monitor the filling level. Please contact us if you need any help finding the right sight flow indicator, or simply order your sight flow indicator at low price and with fast delivery from our online shop.
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