Ball Valves for Amine (DEA / MEA / MDEA - Gas Sweetening) Service
Which ball valves configuration suits Amine (DEA / MEA / MDEA - Gas Sweetening), in which material, to which standard — from real service data, with the pitfalls flagged.
Which ball valves for Amine (DEA / MEA / MDEA - Gas Sweetening)?
Ball Valve (SS 316L body, PTFE seats, NACE MR0175 trim) - Standard isolation for amine absorption and regeneration circuits in sour service. Typical service window: Absorber: 30–100 bar; Regenerator: 1–2 bar (vacuum flash), Absorber: 35–65°C; Regenerator reboiler: up to 135°C.
Recommended Configurations
Ball Valve (SS 316L body, PTFE seats, NACE MR0175 trim)
Standard isolation for amine absorption and regeneration circuits in sour service.
Body Material for Amine (DEA / MEA / MDEA - Gas Sweetening)
Rated from real compatibility data - click any material for the full decision page.
Governing Standards for Amine (DEA / MEA / MDEA - Gas Sweetening) Service
What to Avoid in Amine (DEA / MEA / MDEA - Gas Sweetening) Service
- Carbon steel valves in rich amine at high temperature (corrosion rates >1 mm/year)
- Copper alloy valves (amine attacks copper)
- Valves with hardened trim above NACE MR0175 limit (22 HRC maximum for wetted metal parts)
Service Considerations
- NACE MR0175 compliance for all metallic components in H₂S co-service - mandatory in sour gas plant design
- Amine foaming: caused by valve-induced turbulence - flow velocities must be controlled
- Corrosion allowance: specify minimum 3 mm additional wall for carbon steel in lean amine service
- Shutdown and standby: amine systems must be kept full or nitrogen-blanketed to prevent oxidation during downtime
Other valve types for Amine (DEA / MEA / MDEA - Gas Sweetening)
Ball Valves for other services
Connected Engineering
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