SN Valve is sight glasst manufacturer and supplier in China who can wholesale sight glasst. Sight glasses are critical instruments used in the process industries to determine the condition and level of fluids and media in both tanks and pipelines.
This article will provide an overview of sight glasses, a specialized type of instrument used in various processing industries, including pharmaceuticals manufacturing; food & beverage processing; semiconductor manufacturing; utilities; energy production; oil and gas production; and wastewater treatment and management.
Within these industries, sight glasses find their way into a variety of processing components, including fluid and gas handling pipes as well as tanks and vessels.
In this article we will discuss:
●What is a sight glass
●The different types of sight glasses
●Considerations to take when selecting the right type of sight glass for a particular application
What is a Sight Glass?
A sight glass — which is also called a sight window or view port — is a transparent window that provides a means of seeing inside a process pipe or tank.
Processing plant operators use sight glasses to:
●Verify the production stages of a process visually
●Inspect media or fluids for changes in color or consistency
●Observe the liquid levels in a tank
There is also a specialized type of sight glass called a sight flow indicator — also known as a sight glass tube. Sight flow indicators are transparent tubes installed in pipes to provide a visual means of verifying the flow direction and flow rate of fluids; and inspect products or media flowing through process lines.
Sight glasses have been in use in the industry for a long time. One of the earliest applications for these instruments was as water level gauges in the boilers of steam-powered locomotive engines, where they were used to ensure that water was kept at a specified level to maintain safe operations.
In the sanitary processing industries, sight glasses are primarily used in one of two ways.
●In the biopharmaceutical industry, manufacturers use sight glasses installed in tanks and vessels to verify the various steps of fermentation in a process.
●In the food & beverage processing industry, sight glasses are used to check product clarity and cleanliness; to confirm that changeover has occurred in a process; and for general visual inspection of fluids and slurries.
| DN10(3/8") | DN15(1/2") | DN20(3/4") | DN25(1") | DN40(1-1/2") |
| DN50(2") | DN80(3") | DN100(4") | DN125(5") | DN150(6") |
| DN200(8") | DN250(10") | DN300(12") | DN350(14") | DN400(16") |
| DN450(18") | DN500(20") | DN550(22") | DN600(24") |
| DN10(3/8") | DN15(1/2") | DN20(3/4") | DN25(1") | DN40(1-1/2") |
| DN50(2") | DN80(3") | DN100(4") | DN125(5") | DN150(6") |
| DN200(8") | DN250(10") | DN300(12") | DN350(14") | DN400(16") |
| DN450(18") | DN500(20") | DN550(22") | DN600(24") |
| DN10(3/8") | DN15(1/2") | DN20(3/4") | DN25(1") | DN40(1-1/2") |
| DN50(2") | DN80(3") | DN100(4") | DN125(5") | DN150(6") |
| DN200(8") | DN250(10") | DN300(12") | DN350(14") | DN400(16") |
| DN450(18") | DN500(20") | DN550(22") | DN600(24") |
| DN10(3/8") | DN15(1/2") | DN20(3/4") | DN25(1") | DN40(1-1/2") |
| DN50(2") | DN80(3") | DN100(4") | DN125(5") | DN150(6") |
| DN200(8") | DN250(10") | DN300(12") | DN350(14") | DN400(16") |
| DN450(18") | DN500(20") | DN550(22") | DN600(24") |
| DN10(3/8") | DN15(1/2") | DN20(3/4") | DN25(1") | DN40(1-1/2") |
| DN50(2") | DN80(3") | DN100(4") | DN125(5") | DN150(6") |
| DN200(8") | DN250(10") | DN300(12") | DN350(14") | DN400(16") |
| DN450(18") | DN500(20") | DN550(22") | DN600(24") |
