3/4 NPT Air compressor Oil Sight Glass, Male Hex Head Compresssor Oil Sight Glass, Heavy Duty Solid Brass Oil Sight Glass Liquid Level Gauge Oil Indicator Window For Air Compressor Gearbox Tank


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  • 【Good Transparent View 】The 3/4 NPT brass oil level sight glass with tempered glass which the thickness is 3mm , can provide you with a good transparent sight view and has a good has a good ability to withstand pressure, the compressor oil sight glass is also with baffle which help you can easily observe the change of medium.
  • 【Temperature & Pressure】Air compressor oil sight glass gauge can work under 797 PSI (55 bar) and temperature 120 Celsius. The sight window is qualified to pass strict pressure and temperature tests by our factory.
  • 【Material】The 3/4 NPT hydraulic tank sight glass is made of solid brass, the glass is borosilicate glass, The o-ring inside the oil sight glass is NBR , which is not easy to wear and burst compares to plastic material. It can work in different environment.
  • 【Application】 The tank oil sight plug is a kind of liquid indicator used in tanks, air compressors, pumps, piping system, automotive industries, bearing housing and gearboxes etc. The oil level indicator has good viewport for visual Inspection of water, oil and gas (WOG).
  • 【Service】 Our QC department do 100% quality inspection on the compressor oil sight glass before delivery. We will do 100% refund if the sight plug part is defective. Your valuable suggestions and advice will be greatly appreciated by our team.

Delivery service is available for All cities of North America, Europe and Japan. Delivery time will 3-14 working days depend on courier service. Please check the lead time before placing order if you are in other regions.

If your product is damaged, defective, or incorrect at the time of delivery, please contact us within 7 days. Items can be returned within 7 days of delivery i.e. if an item was delivered on 1st December, it can be returned till 8th December. All items must be returned is in original form (unused, unworn, original packaging, seals, and tags attached), along with all the accessories, manuals, and warranty card that came with it. All items sent for return first go through quality check to ensure they are returned in the original condition. If a product is returned to us in an inadequate condition, we reserve the right to send it back to you.



3/4inch NPT Male Hex Head Brass Oil Sight Glass Liquid Level Gauge Oil Indicator Window For Air Compressor Gearbox Fittings Hydraulic Tank Sight Glass

Product name:Oil level sight glass
Product color:Golden
Product material:Brass, tempered glass
Product model:3/4-14NPT

– Effective in most operating environments
– A clear view of oil color, clarity and accumulation of water or other contaminates
– Accommodating different fluids and adapting to various levels of pressure
– Easy installation and a longer service life

Package:1pc 3/4” MNPT oil sight glass
Please note that the dimensions marked in the picture are measured manually and may be slightly different from the actual size.
NPT Thread Size is a nominal pipe size and it does not represent the actual diameter. Please look the size chart for the specific thread diameter.


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