Actuated Valve — Caustics/Bases
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LibertyCES has documented Actuated Valve in Caustics/Bases service, including Sodium Hydroxide. Wetted materials to confirm: PVC and Nylon. Documented models include GF Signet actuated valves. Compatibility depends on exact concentration, temperature and duty cycle, so confirm with a free spec review.
Notes from the vendor documentation
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
| Spec | Value | Source document |
|---|---|---|
| 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 Piping Systems — Application Solutions Made Easy: Chemical Process Industry |
| 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 Piping Systems — Application Solutions Made Easy: Chemical Process Industry |
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
Can Actuated Valve handle Caustics/Bases?
GF Signet application guide ties actuated-valve dosing directly to NaOH injection with explicit pH setpoint targets.
What wetted materials should Actuated Valve use in Caustics/Bases service?
Materials documented for this service: PVC, Nylon. Compatibility depends on exact concentration, temperature and duty cycle, so confirm with a spec review before final specification.
Which Caustics/Bases chemicals does this cover?
Named chemicals in this documentation: Sodium Hydroxide.
Which Actuated Valve models are documented for Caustics/Bases?
Documented examples include GF Signet actuated valves (cyanide destruction batch process).
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Reviewed by James Riggins, 30+ years specifying water and chemical process equipment · Updated