Strainer — Acids
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LibertyCES has documented Strainer in Acids service, including Sulfuric Acid. Wetted materials to confirm: 316SS, Hastelloy and CPVC. Documented models include Griffco Y-Strainer and Hayward Y-Strainer. Compatibility depends on exact concentration, temperature and duty cycle, so confirm with a free spec review.
Notes from the vendor documentation
Y-strainers cataloged alongside Griffco's sulfuric-acid bulletin hardware and Hayward's PVDF chemfeed sub-catalog.
Materials documented for this service
- 316SS
- Hastelloy
- CPVC
Products cited for this service
Real Specifications
| Spec | Value | Source document |
|---|---|---|
| Sulfuric acid material/temp/concentration limits | Noryl: 95% max concentration, 200°F max temp; PVDF: 95%, 175°F; Halar (ECTFE): 100%, 200°F; PTFE (one-piece flanged): 100%, 200°F; Alloy 20: 100%, 300°F | Griffco Valve — Chemical Feed System Accessories |
| 98%+ sulfuric acid failure mechanism | At 98.3%+ concentration, sulfuric acid carries a sulfur trioxide (SO3) contaminant that attacks and causes stress fractures in both PVDF and Noryl | Griffco Valve — Chemical Feed System Accessories |
| Sulfuric Acid 10% material ratings | CPVC A, PP A, PTFE A, PVC A, PVC-GF A, Hastelloy-C B, 316 SS A, Titanium A (A = Excellent, no effect) | Hayward Flow Control — Chemfeed Product Solutions Guide |
| Griffco Y-Strainer range | 20 mesh to 325 mesh; 316SS/316L SS/CPVC/PVC/Clear PVC; flanged (150#), socket, union, or threaded connections | Griffco Valve — Chemical Feed System Accessories |
| Hayward YSH Series Y-Strainer | 1/2"-2" (DN15-50), PVC/Clear PVC/CPVC, 1/32" (800 micron) standard screen perforation | Hayward Flow Control — Chemfeed Product Solutions Guide |
PTFE's sulfuric-acid compatibility only holds in one-piece flanged construction — threaded PTFE connections are prone to leak from cold flow (creep) at the threads, per Griffco's own bulletin.
Most suppliers spec PTFE for sulfuric acid and consider the material question closed, but PTFE's cold-flow properties mean a threaded PTFE fitting can leak even though the material itself is fully compatible — one-piece flanged construction is the difference between a correct call and a field failure. Past 98.3% concentration, the natural SO3 contaminant in the acid attacks PVDF and Noryl directly, a concentration threshold a generic material chart won't flag.
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 Strainer handle Acids?
Y-strainers cataloged alongside Griffco's sulfuric-acid bulletin hardware and Hayward's PVDF chemfeed sub-catalog.
What wetted materials should Strainer use in Acids service?
Materials documented for this service: 316SS, Hastelloy, CPVC. 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: Sulfuric Acid (contextual, gauge-guard-adjacent).
Which Strainer models are documented for Acids?
Documented examples include Griffco Y-Strainer, Hayward Y-Strainer (PVDF chemfeed).
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Reviewed by James Riggins, 30+ years specifying water and chemical process equipment · Updated