Actuated Valve — Caustics/Bases
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What LibertyCES's vendor documentation shows
GF Signet application guide ties actuated-valve dosing directly to NaOH injection with explicit pH setpoint targets.
Materials documented for this service
- PVC
- Nylon
Products cited for this service
Real Specifications
| Cyanide destruction batch process setpoints | Stage 1: pH raised to 11.5 using sodium hydroxide, then chlorine added until ORP reaches +450mV; small NaOH adjustments maintain pH 11.5 throughout | gf-signet-application-solutions.md |
| Cyanide destruction two-step process | Stage 1 targets oxidation below 0.1 ppm; Stage 2 pH lowered with sulfuric acid, ORP controls oxidizer addition; modern systems often use up to a 4-hour detention time | gf-signet-application-solutions.md |
The batch cyanide-destruction process requires the acid injection to be manually locked out below pH 11 — dropping pH below 11 during the NaOH dosing stage won't allow proper oxidation of cyanide to cyanate, a real, vendor-stated process failure mode distinct from any valve hardware issue.
An actuated valve dosing sodium hydroxide into a cyanide-destruction batch isn't a generic flow-control component — GF Signet's own process specifies a manually-enforced pH lockout below 11 during that stage, which means the valve and the interlock logic around it have to be specified together, not the valve alone.
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 Actuated Valve compatible with Caustics/Bases?
GF Signet application guide ties actuated-valve dosing directly to NaOH injection with explicit pH setpoint targets. This is moderate evidence.
What materials are documented for Actuated Valve in Caustics/Bases service?
Materials documented for this service: PVC, Nylon. Chemical compatibility depends on exact concentration, temperature, and duty cycle — confirm with a spec review before final specification.
What specific Caustics/Bases chemicals does this cover?
Named chemicals in this documentation: Sodium Hydroxide.
What products are cited for Actuated Valve in Caustics/Bases service?
Documented examples include GF Signet actuated valves (cyanide destruction batch process).
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