Butterfly Valve — Acids
30+ years spec experience. Send James the process data and get a real answer — not a catalog page.
Request a Spec Review →Named chemicals
What LibertyCES's vendor documentation shows
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
| Type 800ISO Metal/Graphite seat temperature range | -70°C to +550°C (1022°F) — highest single-valve temperature ceiling in this project's captures | crane-cpe-xomox-high-performance-butterfly-valves.md |
| Special Purpose Butterfly Valve named chemistries | HF Acid, Hot Acids, Sodium Carbonate/Carbonic Acid explicitly named in the chemistry-specific application list | crane-cpe-xomox-high-performance-butterfly-valves.md |
| 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-metal-replacement-valves.md |
| Asahi named process acids | Sulfuric, hydrofluoric, and nitric acid named among the metal-replacement family's process-line chemistries | asahi-america-metal-replacement-valves.md |
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
Is Butterfly Valve compatible with Acids?
HF Acid and Sodium Hydroxide both explicitly named on Crane's Special Purpose Butterfly Valve line. This is strong evidence.
What materials are documented for Butterfly Valve in Acids service?
Materials documented for this service: Metal/Graphite seat (Type 800ISO, -70C to 550C), PTFE/PCTFE, 316SS (weak vs HF). Chemical compatibility depends on exact concentration, temperature, and duty cycle — confirm with a spec review before final specification.
What specific Acids chemicals does this cover?
Named chemicals in this documentation: Hydrofluoric Acid, Sulfuric Acid, Hot Acids, Carbonic Acid.
What products are cited for Butterfly Valve in Acids service?
Documented examples include Crane CPE/XOMOX Type 800/800ISO, Asahi Type-57 series, AVCO BFV HP.
Ready to buy or need a fast answer? Call, text, or email James directly — (559) 395-5500 · [email protected].