Butterfly Valve — Acids
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LibertyCES has documented Butterfly Valve in Acids service, including Hydrofluoric Acid, Sulfuric Acid and Hot Acids. Wetted materials to confirm: Metal/Graphite seat, PTFE/PCTFE and 316SS. Documented models include Crane CPE/XOMOX Type 800/800ISO and Asahi Type-57 series. Compatibility depends on exact concentration, temperature and duty cycle, so confirm with a free spec review.
Notes from the vendor documentation
HF Acid and Sodium Hydroxide both explicitly named on Crane's Special Purpose Butterfly Valve line.
Materials documented for this service
- Metal/Graphite seat (Type 800ISO, -70C to 550C)
- PTFE/PCTFE
- 316SS (weak vs HF)
Products cited for this service
Real Specifications
| Spec | Value | Source document |
|---|---|---|
| Type 800ISO Metal/Graphite seat temperature range | -70°C to +550°C (1022°F) — highest single-valve temperature ceiling in the XOMOX/Crane range | Crane ChemPharma & Energy — XOMOX High Performance Butterfly Valves |
| Special Purpose Butterfly Valve named chemistries | HF Acid, Hot Acids, Sodium Carbonate/Carbonic Acid explicitly named in the chemistry-specific application list | Crane ChemPharma & Energy — XOMOX High Performance Butterfly Valves |
| Asahi Type-57 LIS pressure/temp | 150 psi @ 70°F, Class 6 bubble-tight shutoff, non-wetted 316SS/Titanium/Hastelloy C stem isolated from media | Asahi/America — Thermoplastic Valves: Direct Replacement for Metal Valves |
| Asahi named process acids | Sulfuric, hydrofluoric, and nitric acid named among the metal-replacement family's process-line chemistries | Asahi/America — Thermoplastic Valves: Direct Replacement for Metal Valves |
Asahi's Type-57 LIS keeps its 316SS/Titanium/Hastelloy C stem fully non-wetted — isolated from the media by the full-seat design — specifically because the stem, not just the disc, is what a hot acid attacks first on a metal butterfly valve.
The same acid family spans two very different valve answers here — Crane's Type 800ISO handles hot acids by seat-material selection up to 550°C, while Asahi's Type-57 LIS handles them by keeping the metal stem out of the wetted path entirely. Neither is a universal acid valve; the acid's temperature and concentration decide which mechanism actually applies.
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 Butterfly Valve handle Acids?
HF Acid and Sodium Hydroxide both explicitly named on Crane's Special Purpose Butterfly Valve line.
What wetted materials should Butterfly Valve use in Acids service?
Materials documented for this service: Metal/Graphite seat (Type 800ISO, -70C to 550C), PTFE/PCTFE, 316SS (weak vs 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: Hydrofluoric Acid, Sulfuric Acid, Hot Acids, Carbonic Acid.
Which Butterfly Valve models are documented for Acids?
Documented examples include Crane CPE/XOMOX Type 800/800ISO, Asahi Type-57 series, AVCO BFV HP.
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Reviewed by James Riggins, 30+ years specifying water and chemical process equipment · Updated