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Chemical Compatibility

Actuated Valve — Acids

Strong evidence

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Named chemicals

Sulfuric AcidNitric Acid

What LibertyCES's vendor documentation shows

Diaphragm elastomer, not body material, is the limiting factor even where PVDF/PTFE bodies tolerate higher temps.

Materials documented for this service

  • ALD70 diaphragm (38°C max on H2SO4; fails on nitric)
  • SST 316 spring (MIN configuration)

Products cited for this service

Netafim 75/90/100 Series ('MIN' mining configuration)

Real Specifications

ALD70 diaphragm — Sulfuric Acid38°C max — far more restrictive than the body/liner materials at the same acid concentrationnetafim-mining-heap-leaching.md
ALD70 diaphragm — Nitric AcidRated "Not Good" even at 10% concentrationnetafim-mining-heap-leaching.md
MIN mining configurationALD70 diaphragm + SST 316 spring is the standard 'MIN' mining configuration across the 75/90/100 Series valve linesnetafim-mining-heap-leaching.md
Install / Failure Note

On a sulfuric heap-leach quote, the ALD70 diaphragm — not the body or liner material — is the limiting component at only 38°C max; confirm operating temperature against the diaphragm rating specifically, since the body material's higher ceiling doesn't apply to the whole valve.

Most suppliers would spec this valve off the body material and call it done. The diaphragm elastomer is the part that actually fails first on a sulfuric leach circuit — James checks the component that actually touches the fluid at its worst point, not just the one on the nameplate.

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 Acids?

Diaphragm elastomer, not body material, is the limiting factor even where PVDF/PTFE bodies tolerate higher temps. This is strong evidence.

What materials are documented for Actuated Valve in Acids service?

Materials documented for this service: ALD70 diaphragm (38°C max on H2SO4; fails on nitric), SST 316 spring (MIN configuration). 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: Sulfuric Acid, Nitric Acid.

What products are cited for Actuated Valve in Acids service?

Documented examples include Netafim 75/90/100 Series ('MIN' mining configuration).

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