Ball Valve — Acids
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LibertyCES has documented Ball Valve in Acids service, including Hydrochloric Acid, Sulfuric Acid and Nitric Acid. Wetted materials to confirm: PFA, PVDF, CPVC and 316SS. Documented models include Asahi Type-21/21a and Crane CPE/XOMOX XLB Lined Ball Valve. Compatibility depends on exact concentration, temperature and duty cycle, so confirm with a free spec review.
Notes from the vendor documentation
Hayward's 20-chemical x 12-material table gives quantified A/B/C/X ratings per acid; PAA 40% is uniquely restrictive (only PTFE/PVDF pass).
Materials documented for this service
- PFA (Excellent)
- PVDF
- CPVC (weak on HF)
- 316SS (poor on HCl/HF)
Products cited for this service
Real Specifications
| Spec | Value | Source document |
|---|---|---|
| Hydrofluoric Acid 20% material ratings (Hayward chemfeed table) | CPVC rates only C (Fair); PP, PTFE, PVDF rate A; Buna-N and 316SS rate X | Hayward Flow Control — Chemfeed Product Solutions Guide |
| Crane XLB Lined Ball Valve size & pressure | 1/2"-6" full port, ASME Class 150/PN16/JIS10, -29°C to 204°C | Crane ChemPharma & Energy — XOMOX Lined Valves |
| Richter BVA size & pressure | 1"-6" / DN25-DN150, Class 150, -60°C to +200°C | Richter Chemie-Technik — Ball Valves |
| Asahi Advanced PE valve pairing for 37% HCl | PVC/FKM valve materials, Vented Ball Valves required | Asahi/America — Advanced PE Industrial Piping Systems (Chem Proline / Chem Prolok / Poly-Flo) |
Hayward's own 20-chemical table rates both 316SS and Hastelloy-C a flat X (not recommended) for 20% hydrochloric acid — a stainless-trim ball valve is a real failure risk on HCl service even though the same alloy handles many other acids fine.
"Acids" isn't one spec — Hayward's own resistance table rates 316SS from A (nitric acid) down to a flat X (hydrochloric and hydrofluoric acid) depending on which acid is running. Most suppliers sell what you ask for; the acid's identity, not just its presence, is what actually determines wetted material.
Every material and product claim on this page traces to real, vendor-published documentation on file with LibertyCES. Chemical compatibility depends on exact concentration, temperature, and duty cycle — confirm current specifications with the manufacturer and request a spec review before final specification.
FAQ
Can Ball Valve handle Acids?
Hayward's 20-chemical x 12-material table gives quantified A/B/C/X ratings per acid; PAA 40% is uniquely restrictive (only PTFE/PVDF pass).
What wetted materials should Ball Valve use in Acids service?
Materials documented for this service: PFA (Excellent), PVDF, CPVC (weak on HF), 316SS (poor on HCl/HF). Compatibility depends on exact concentration, temperature and duty cycle, so confirm with a spec review before final specification.
Which Acids chemicals does this cover?
Named chemicals in this documentation: Hydrochloric Acid, Sulfuric Acid, Nitric Acid, Hydrofluoric Acid, Peracetic Acid (40%).
Which Ball Valve models are documented for Acids?
Documented examples include Asahi Type-21/21a, Crane CPE/XOMOX XLB Lined Ball Valve, Hayward TBH/TBH-Z, Richter BVA/KA-N/KK/KN/KNR, Crane FK Soft Seated Ball Valve.
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Reviewed by James Riggins, 30+ years specifying water and chemical process equipment · Updated