Nitric Acid (HNO₃) service
Service Selection
Butterfly Valves for Nitric Acid (HNO₃) Service
Which butterfly valves configuration suits Nitric Acid (HNO₃) (HNO₃), in which material, to which standard — from real service data, with the pitfalls flagged.
Which butterfly valves for Nitric Acid (HNO₃)?
SS 304L butterfly valve - Large bore, low-pressure HNO₃ service Typical service window: 1–20 bar, Ambient to 80°C.
Recommended Configurations
SS 304L butterfly valve
Large bore, low-pressure HNO₃ service
Body Material for Nitric Acid (HNO₃)
Rated from real compatibility data - click any material for the full decision page.
Governing Standards for Nitric Acid (HNO₃) Service
What to Avoid in Nitric Acid (HNO₃) Service
- Rubber-lined valves (nitric acid attacks all common rubbers)
- Hastelloy C-276 for hot concentrated HNO₃ (Mo susceptibility)
- Carbon steel for dilute HNO₃
Service Considerations
- Fuming nitric acid (>85%) - extreme oxidiser, full PPE and emergency protocols required
- All-welded construction preferred - no threaded joints in concentrated HNO₃
- Stagnant acid in dead-legs causes localised attack - full-bore valves only
- ATEX rating required where NOₓ fumes are present
Other valve types for Nitric Acid (HNO₃)
Butterfly Valves for other services
Butterfly Valves for Sulphuric Acid (H₂SO₄)Butterfly Valves for Hydrochloric Acid (HCl)Butterfly Valves for SeawaterButterfly Valves for LNG / Cryogenic Natural GasButterfly Valves for Caustic Soda (NaOH)Butterfly Valves for Phosphoric Acid (H₃PO₄)Butterfly Valves for Cooling WaterButterfly Valves for Brine / Sodium Chloride Solution
Reviewed by Process Engineering, Vajra Industrial SolutionsDiscipline: Process & Fluid Service EngineeringLast reviewed: 20 June 2026
Connected Engineering
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