NPT Sights for H2S Service

NPT-threaded sight glasses specifically designed for hydrogen sulfide, H2S sour refinery process. These sight windows are designed for continuous operation up to 800 F and 3000 psi in the H2S environment. Connections are standard NPT male fittings. A sapphire window is sealed into the housing with an all-metal seal. This sight glass has a long working life under severe temperature swings.

Encole

Sapphire Sight Glasses NPT-Threaded for H2S Service

Specifically designed for Hydrogen Sulfide, H2S service at high temperature, these sight windows are an ideal choice for use in sour refinery process. The C-276 Hastelloy housing has a finish of 32 RMS providing smooth surfaces reducing residues or particle contaminants. A sapphire window is sealed into the housing with an all-metal seal. These sight glasses have a long working life under severe temperature swings. The lifetime is unaffected by thermal or pressure cycling.

Please note: The internal C-seal itself is rated to 27,700 psi pressure at 700 degrees C (1,292 F), this is the critical element of these sight windows.

Aperture Dia.ThreadHousing MaterialMax Operating PressureMax Operating Temp.Window MaterialMfg. P/N.Encole P/N.Price
0.770 inchNPT 1"Hastelloy C-276210 bar426 CSapphire100735325A1000$2133.00each
1.160 inchNPT 1-1/2"Hastelloy C-276190 bar426 CSapphire100736325A1001$2511.00each
1.660 inchNPT 2"Hastelloy C-276190 bar426 CSapphire100737325A1002$2889.00each
2.000 inchNPT 2-1/2"Hastelloy C-276135 bar426 CSapphire100738325A1003$3393.00each
2.420 inchNPT 3"Hastelloy C-276135 bar426 CSapphire100739325A1004$3789.00each

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