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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
NPT-Threaded Sapphire Sight Glass for H2S Service
Specifically designed for Hydrogen Sulfide, H2S service at high temperature, this sight window is an ideal choice for use in sour refinery process. 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. 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 this sight window.
Because the seal is made to the highest standards of quality with all critical features closely controlled, the manufacturing lead time of this sight window is long. Contact us for reduced lead times and volume discounts.
| Aperture Dia. | Thread | Max Operating Pressure | Housing Material | Max Operating Temp. | Window Material | Mfg P/N | Encole P/N | Price | |
|---|---|---|---|---|---|---|---|---|---|
| 0.77 inch | NPT 1 | 210 bar | Alloy 718 | 490 C | Sapphire | 100735 | 771E501 | $ 4867.00 per package of 2 | |
| 1.16 inch | NPT 1-1/2 | 190 bar | Alloy 718 | 490 C | Sapphire | 100736 | 771E502 | $ 5157.00 per package of 2 | |
| 1.66 inch | NPT 2 | 190 bar | Alloy 718 | 490 C | Sapphire | 100737 | 771E503 | $ 5962.00 per package of 2 | |
| 2.00 inch | NPT 2-1/2 | 135 bar | Alloy 718 | 490 C | Sapphire | 100738 | 771E504 | $ 6984.00 per package of 2 | |
| 2.42 inch | NPT 3 | 135 bar | Alloy 718 | 490 C | Sapphire | 100739 | 771E505 | $ 7952.00 per package of 2 |