Valves for the Hydrotreating Unit
Removes sulphur, nitrogen and metals from fuel fractions using hydrogen over a catalyst bed. High-pressure hydrogen service with sour-gas byproducts drives both metallurgy and valve-standard selection.
What are the critical valves in a Hydrotreating Unit?
Reactor feed/effluent isolation (Gate Valves) — High-pressure hydrogen service ahead of and after the catalyst reactor. Recycle gas compressor isolation (Ball Valves) — DBB isolation for the sour, high-pressure recycle-hydrogen loop. Sour water / amine interface (Control Valves) — Level control on the high-pressure separator handling H2S-laden condensate.
Critical Valve Points
Reactor feed/effluent isolation
Gate Valves →High-pressure hydrogen service ahead of and after the catalyst reactor.
Recycle gas compressor isolation
Ball Valves →DBB isolation for the sour, high-pressure recycle-hydrogen loop.
Sour water / amine interface
Control Valves →Level control on the high-pressure separator handling H2S-laden condensate.
Unit-Level Valve Strategy
- High-pressure hydrogen embrittles susceptible steels - material selection follows hydrogen-service guidance (ASME B31.12) alongside standard pressure-class rules
- NACE MR0175 / ISO 15156 sour-service material limits apply to every wetted part downstream of the H2S-forming reactor section
- Recycle-gas compressor and make-up hydrogen isolation are DBB by default given the flammability and pressure of the service
Equipment in this Unit
Fluids in this Unit
Governing Standards
Related process units
Sealing systems specified in this unit
Connected Engineering
Sourcing valves for a Hydrotreating Unit?
Send your unit valve list — we supply the full set (Gate Valves, Ball Valves, Control Valves) with certification matched to NACE MR0175 / ISO 15156, in one PO.