Hydrofluoric Acid (HF) service

Service Selection

Globe Valves for Hydrofluoric Acid (HF) Service

Which globe valves configuration suits Hydrofluoric Acid (HF) (HF), in which material, to which standard — from real service data, with the pitfalls flagged.

Which globe valves for Hydrofluoric Acid (HF)?

Monel 400 globe valve (NACE MR0175) - HF alkylation unit - API 751 compliant design Bellows-sealed globe valve - Zero fugitive emission design - HF is lethal at low concentrations Typical service window: 1–20 bar, Ambient to 70°C.

Recommended Configurations

Monel 400 globe valve (NACE MR0175)

HF alkylation unit - API 751 compliant design

Bellows-sealed globe valve

Zero fugitive emission design - HF is lethal at low concentrations

Body Material for Hydrofluoric Acid (HF)

Rated from real compatibility data - click any material for the full decision page.

Monel 400Industry standard for HF alkylation service. Resists anhydrous and aqueous HF.Excellent Carbon SteelForms iron fluoride passivation layer. Acceptable for anhydrous HF and high concentrations. Not for dilute aqueous HF.Good PTFEAcceptable for aqueous HF up to ~50% at ambient. Fuming HF attacks PTFE at elevated temperature.Good Nickel 200/201Good for aqueous HF in some concentration ranges.Good Hastelloy C-276Only for dilute aqueous HF - not for anhydrous or hot concentrated HF.Fair SS 304Not acceptable for HF service - corrosion and SCC risk.Not Recommended

Governing Standards for Hydrofluoric Acid (HF) Service

API 751 - Safe operation of HF alkylation unitsASME B31.3 Category M (lethal service)ISO 15848 Class A (zero fugitive emissions)NACE MR0175 / ISO 15156

What to Avoid in Hydrofluoric Acid (HF) Service

SS 304 or SS 316 in any HF service
Non-fire-safe or non-bellows-sealed valves
Any valve with glass or ceramic components

Service Considerations

Category M lethal service per ASME B31.3 - zero leakage tolerance
All maintenance requires full acid suit, supplied-air respirator
ASHRAE/CCPS emergency response plan mandatory
Remote-actuated valves with fail-safe closure - no manual operation in HF zones
Calcium gluconate antidote gel must be immediately available in all HF areas

Other valve types for Hydrofluoric Acid (HF)

Ball Valves for Hydrofluoric Acid (HF)

Globe Valves for other services

Globe Valves for Sulphuric Acid (H₂SO₄)Globe Valves for Chlorine (Cl₂)Globe Valves for Ammonia (NH₃)Globe Valves for High-Pressure Steam Globe Valves for Hydrogen (H₂)Globe Valves for Caustic Soda (NaOH)Globe Valves for Hot Oil (Thermal Heat Transfer Fluid)Globe Valves for MEG / Glycol (Monoethylene Glycol - Gas Dehydration)

Reviewed by Process Engineering, Vajra Industrial SolutionsDiscipline: Process & Fluid Service EngineeringLast reviewed: 20 June 2026

Connected Engineering

Standards

Materials

Failure Modes

Packing Blowout

Products

Comparisons

Globe vs Gate Valve

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Relevant Products

Vajra Globe Valves

Engineering references

Hydrofluoric Acid (HF) service guideFull compatibility, standards & considerations Vajra Globe ValvesFull range, specs & standards Spec Check engineValidate this spec before the RFQ