Ball Valves for MEG / Glycol (Monoethylene Glycol - Gas Dehydration) Service
Which ball valves configuration suits MEG / Glycol (Monoethylene Glycol - Gas Dehydration) (C₂H₆O₂), in which material, to which standard — from real service data, with the pitfalls flagged.
Which ball valves for MEG / Glycol (Monoethylene Glycol - Gas Dehydration)?
Ball Valve (SS 316 body, PTFE seats) - Standard isolation for MEG injection lines and recirculation. Typical service window: Up to 400 bar for deepwater injection; 10–50 bar for onshore pipeline injection, −40°C (sub-sea pipeline) to +190°C (TEG regeneration).
Recommended Configurations
Ball Valve (SS 316 body, PTFE seats)
Standard isolation for MEG injection lines and recirculation.
Body Material for MEG / Glycol (Monoethylene Glycol - Gas Dehydration)
Rated from real compatibility data - click any material for the full decision page.
Governing Standards for MEG / Glycol (Monoethylene Glycol - Gas Dehydration) Service
What to Avoid in MEG / Glycol (Monoethylene Glycol - Gas Dehydration) Service
- Copper alloy valves (glycol attacks copper over time)
- Carbon steel at elevated temperature without inhibitor dosing
- Valve with low-flow dead zones that allow stagnant glycol to concentrate and corrode
Service Considerations
- Deepwater MEG injection: extremely high pressure (>200 bar) requires Class 1500–2500 valves
- TEG regeneration reboiler: temperatures up to 200°C require checking PTFE seat limits
- Oxygen ingress to MEG causes accelerated corrosion - seal quality on valves is critical
- MEG is biodegradable but regulatory limits apply for offshore discharge
Other valve types for MEG / Glycol (Monoethylene Glycol - Gas Dehydration)
Ball Valves for other services
Connected Engineering
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