1/2" NPT Carbon Steel Level Sight Glass Valves (w/ Optional Gage Glass)

1/2" NPT Carbon Steel Level Sight Glass Valves (w/ Optional Gage Glass)

Your Price: $209.00
Stock Status:
In Stock.

Stock Quantity: 3
Part Number:Q170-EE
  • Vessel Connection:1/2 inch MNPT
  • Gauge Glass Diameter:5/8 inch
  • Valve Body Material:NACE Compliant Carbon Steel (Approved for Petroleum Sour Gas Service)
  • Valve Pressure Rating:500 PSI (34 BAR) at 450F (232C)
  • Glass Seal Material:EPDM

Choose Options

Required Center to Center Distance help
Exact Gage Valve Center Fixing Distance (Center To Center Distance) help
Tubular Level Gauges are designed to view liquid levels using clear or red line Borosilicate (Pyrex) tubing to view liquid levels. All valves use a stuffing box configuration to seal the glass tube, and have a ball check shutoff to prevent loss of vessel contents in case of glass failure. Operating pressure and temperatures are subject to the limitations of the tubular gauge glass and washer composition. These valve bodies are rated for 500 PSIG at 450F. The actual pressure limitations are of the gage glass. Note that these valves are of carbon steel, which may develop rust/corrosion under steam/water service. Use with oils or petrochemical liquids. 

The following pressure values are for industry standard high pressure gage glass use (steam values are for reference only - for steam service, choose stainless steel valves). These items are considered commodity components and come without special certifications.

Gage Glass Length
Temperature Up To 150F Without Corrosion
Steam Boiler Service up to 425F
30280Not Recommended
36245Not Recommended
48195Not Recommended

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