Chlorine (Cl₂) service
Service Selection
Ball Valves for Chlorine (Cl₂) Service
Which ball valves configuration suits Chlorine (Cl₂) (Cl₂), in which material, to which standard — from real service data, with the pitfalls flagged.
Which ball valves for Chlorine (Cl₂)?
Hastelloy C-276 ball valve (wet Cl₂) - Best corrosion resistance for wet chlorine service PTFE-seated ball valve - PTFE seats are inert to all chlorine service conditions Typical service window: Up to 25 bar for liquid Cl₂, -34°C (liquid) to 120°C (gas).
Recommended Configurations
Hastelloy C-276 ball valve (wet Cl₂)
Best corrosion resistance for wet chlorine service
PTFE-seated ball valve
PTFE seats are inert to all chlorine service conditions
Body Material for Chlorine (Cl₂)
Rated from real compatibility data - click any material for the full decision page.
Governing Standards for Chlorine (Cl₂) Service
Chlorine Institute Pamphlet 6ASME B31.3 Category M (toxic service)ISO 15848 Class A (fugitive emissions)NFPA 72 (detection)
What to Avoid in Chlorine (Cl₂) Service
- Valves with copper alloy trim or seals
- Titanium-bodied valves in hot service
- Rubber-seated valves (chlorine attacks most elastomers)
Service Considerations
- Category M service per ASME B31.3 - zero leakage to atmosphere required
- All maintenance requires SCBA and full PPE
- Emergency isolation valve (EIV) with remote actuator required
- Valve actuators must be pneumatic (spring-return fail-close) for toxic service
- No organic lubricants on valve internals - use chlorinated or PTFE-based lubricant only
Other valve types for Chlorine (Cl₂)
Ball Valves for other services
Reviewed by Process Engineering, Vajra Industrial SolutionsDiscipline: Process & Fluid Service EngineeringLast reviewed: 20 June 2026
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