Practical ATEX filling advice for your product, packs and production target

Chemical filling machinery

Corrosion-Resistant Filling Machines

Protect product-contact parts when filling bleach, acids, cleaners and aggressive liquids, with ATEX features included where your product or site requires them.

Corrosion-resistant automatic chemical filling machine with conveyor

Two separate questions

Protect the machine from the chemical—and the area from ignition risk.

Aggressive chemicals can attack stainless steel, seals, hoses and valves. Flammable products can create a potentially explosive atmosphere. Some projects involve one issue; others involve both.

Do not use “chemical proof” as a substitute for an SDS review.

The exact concentration, temperature, contaminants, cleaning chemicals and dwell time determine the compatible product-contact materials.

  • Confirm chemical name and concentration.
  • Review PP, PTFE, PVC, seal and hose compatibility.
  • Define foam, splash and vapour-control requirements.
  • Confirm whether a hazardous-area assessment is also required.
Corrosion-resistant automatic chemical filling machine with conveyor

Machine comparison

Choose the automation level that fits your production.

Automatic anti-corrosion filling machine
Automatic

Automatic anti-corrosion filler

Reference LUYTCR4A gravity platform for conveyor-fed bottles.

  • 100–3000 ml reference range
  • 4 heads standard platform
  • Approximately 200–2500 bottles/hour
  • PP frame with PTFE/PVC contact-route options
Corrosion-resistant bleach filling machine
Configurable

Bleach and disinfectant filler

Reference LUYTCR6 family with diving nozzles and configurable head count.

  • 1–2 head semi-auto or multi-head platforms
  • Approximately 18 bottles/min at 500 ml reference
  • 35 L reference tank
  • 0.4–1 MPa working pressure reference
Corrosion-resistant automatic chemical filling machine with conveyor
Semi-automatic

Operator-fed corrosion-proof filler

A compact route for lower output, trials and flexible chemical production.

  • Foot-pedal or cycle control
  • One or two filling nozzles
  • Container tray and splash management
  • Product-specific contact materials

Reference automatic platform

Key capabilities to confirm for your product.

MethodGravity filling with corrosion-resistant nozzles
Filling range100–3000 ml
Reference speedApproximately 200–2500 bottles/hour
Bottle rangeDiameter 60–120 mm; height 60–300 mm
Nozzles4 standard platform, customisable
Electrical supply110/220 V, 50–60 Hz reference
PowerApproximately 550 W reference
Air pressure0.4–0.7 MPa reference
HopperApproximately 90 L
Reference sizeApproximately 2000 × 1300 × 1900 mm
Reference weightApproximately 200 kg

Indicative platform data only. Final performance, conformity, utilities and dimensions are confirmed against the product, container, hazardous-area classification and approved project specification.

FAQs

Questions about corrosion-resistant filling.

Is bleach filling always an ATEX application?

No. Bleach is primarily a corrosive-product and material-compatibility challenge. Whether explosion protection is required depends on the full product composition and workplace assessment.

Which materials are used for corrosive liquids?

Depending on compatibility, product-contact routes may use PP, PTFE, PVC or selected alloys and elastomers. Compatibility must be confirmed against the exact chemical concentration, temperature and cleaning method.

Can a corrosion-resistant machine also be supplied for a hazardous area?

Potentially, but that creates a combined specification. Corrosion resistance does not by itself address ignition risks, zone requirements or conformity documentation.

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Materials evidence

Specify the complete wetted path from verified chemical data.

“Corrosion resistant” is not a single construction standard. Compatibility depends on the exact substance, concentration, contaminants, operating temperature, exposure time, pressure, cleaning medium and mechanical duty. The evidence should cover every wetted component and the foreseeable cleaning state.

Wetted-path areaEvidence to confirmWhy it matters
Tank, manifold and valvesCandidate material, concentration and temperature limits, joining method and any coating or lining.Bulk construction may be suitable while welds, fittings or linings remain vulnerable.
Seals and elastomersExact seal compound, swelling or embrittlement data, service life and replacement method.A compatible body material does not protect an unsuitable seal.
Hoses and tubingInner liner, reinforcement, end fittings, bend radius, permeation and static behaviour.Flexible connections can introduce chemical, mechanical and electrostatic constraints.
Pump and meterWetted materials, operating principle, viscosity range, dry-running limits and cleanability.The dosing device often contains several different materials and clearances.
Nozzles and drip controlBody, valve seat, seals, cut-off, retained volume and dismantling or flush method.Nozzle residues affect drips, cross-contamination and operator exposure.
Cleaning stateFlush medium, temperature, contact time, disposal and evidence of a clean or neutral condition.The cleaning chemical can be less compatible or more flammable than the product.

PP, PVC, PTFE and 316 stainless steel are options to investigate—not universal answers.

The source data and supplier approval should relate to the actual formulation and operating conditions. Unknown cells in a compatibility review should remain open actions rather than being filled with assumptions.

Combined specification

Keep chemical compatibility and explosion protection as separate approval gates.

A machine may need only corrosion-resistant contact parts, only hazardous-area protection, or both. The product SDS and formulation support both reviews, but the conclusions are different. The material review addresses degradation, contamination, leakage and cleaning; the ATEX/DSEAR review addresses explosive atmospheres, ignition sources, release control and the site classification.

Trial and inspection evidence

Where practical, run the real product through representative wetted components and observe fill behaviour, staining, swelling, leakage, valve response and cleaning. Longer-term compatibility may require supplier data or controlled exposure evidence beyond a short filling trial.

Agree inspection points and consumable replacement intervals. Seals, hoses and valve seats should be identifiable in the spare-parts list so that a future substitution does not silently change the approved material route.

Containment and cleaning

Define drainage, drip trays, bund or local containment interfaces, transfer connections and the route for waste or recovered product. Cleaning access should avoid creating an uncontrolled splash, vapour or incompatible mixture.

If the product or cleaning medium can create an explosive atmosphere, the cleaning mode belongs in the hazardous-area and operating assessment. A machine that is safe during production cannot automatically be assumed safe during open flushing or maintenance.

Is PTFE compatible with every corrosive chemical?

No material should be treated as universally suitable. Confirm the exact grade, product formulation, concentration, temperature, pressure, exposure and mechanical duty using reliable supplier or test evidence.

Can 316 stainless steel be used for acids or bleach?

Suitability depends on the exact chemistry and conditions. Chlorides, oxidisers, concentration and temperature can change corrosion behaviour, so the wetted-path material should be approved for the declared product rather than selected from a broad product category.

What information is needed for a materials review?

Provide the current SDS, full formulation or concentration where available, operating and cleaning temperatures, exposure time, pressure, viscosity, proposed cleaning media and any existing compatibility or service-history evidence.

General chemical-filling selection where no hazardous-area intent exists is owned by chemicalfillers.co.uk. This page remains focused on the point where materials compatibility and ATEX requirements may need to be specified together.

Need a filling system that fits your product, packs and output?

Share your SDS, hazardous-area information, containers, fill volumes, target output and any capping or labelling stages.

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