Butterfly Valve for Municipal Wastewater
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Request a Spec Review →What LibertyCES's vendor documentation shows
Wastewater treatment and CSO treatment explicitly named applications.
Products cited in this application
Real Specifications
| Type-57 LIS pressure/temp | 150 psi @ 70°F, Class 6 bubble-tight shutoff, ISO 5752 short pattern | asahi-america-metal-replacement-valves.md |
| Type-55 IS pressure by size | 150 psi (-5°F to 210°F) for 2"-12"; derated to 100 psi for 14"/16" | asahi-america-metal-replacement-valves.md |
| Type-55 IS body | Powdercoat ductile cast iron (FCD-S) — only metal-bodied valve in the metal-replacement family, PTFE disc/seat wetted | asahi-america-metal-replacement-valves.md |
| Warranty | 3-year warranty across all 5 metal-replacement valve families | asahi-america-metal-replacement-valves.md |
The 14"/16" Type-55 IS is derated to 100 psi from the 150 psi rating that applies at 2"-12" — quoting the smaller size's pressure rating against a 14"/16" wastewater line is a real oversizing/undersizing trap in this family.
CSO and WWTP wastewater lines are exactly where Asahi's own named chemistries — acidic waste, oxidizers, caustics — go to work on a metal butterfly valve's wetted surfaces; the Type-57 LIS's non-wetted 316SS stem and full-seat isolation exist specifically so the metal never touches the media in the first place.
Every claim on this page traces to real, vendor-published documentation on file with LibertyCES. Confirm current specifications with the manufacturer before final specification.
Related Guides
FAQ
Is Butterfly Valve used in Municipal Wastewater?
Wastewater treatment and CSO treatment explicitly named applications. This is strong evidence.
What products are specified for Butterfly Valve in Municipal Wastewater?
Documented examples include Asahi Type-57 LIS, Type-55 IS — confirm current specifications with the manufacturer before final selection.
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