Chemical Liquid Filling Machine

Chemical liquid filling machines are designed to fill: strong acids (hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid); strong alkalis (sodium hydroxide, potassium hydroxide, ammonia solution); solvents and flammable liquids (acetone, IPA, ethanol, toluene, xylene — hazardous-area documentation reviewed model required); oxidising agents (hydrogen peroxide, sodium hypochlorite); cleaning compounds (industrial detergent, bleach, descaler); agricultural chemicals (pesticide, herbicide, fertiliser solution); petrochemicals (lubricating oil, cutting fluid, coolant); and specialty chemicals (adhesive, ink, resin, epoxy component). Material selection for wetted parts (PVDF, PTFE, PP, Hastelloy) is critical and depends on the specific chemical, concentration and temperature.

ATEX (ATmospheres EXplosibles) is the EU directive governing equipment used in potentially explosive atmospheres — environments where flammable gas, vapour, mist or dust may be present. ATEX Zone 1 means explosive atmosphere is likely to occur during normal operation. ATEX documentation review means explosive atmosphere is not likely in normal operation but may occur occasionally. For chemical filling, ATEX documentation is required when: filling flammable solvents (flash point below 60°C) — acetone, ethanol, IPA, toluene, xylene, hexane; filling highly flammable fuels; and filling any liquid whose vapour concentration in air can reach the lower explosive limit (LEL). hazardous-area documentation review filling machines use explosion-proof motors, intrinsically safe control panels, anti-static conveyors and vapour-capture fill nozzles. Outside the EU, equivalent standards include IECEx (international), NEC (USA) and GB3836 (China).

Wetted parts are all components that contact the chemical product: cylinder, piston, seals, nozzle, valve and tubing. Material selection guide: SUS316L (standard): suitable for mild acids, alkalis and most non-halogenated solvents. Not suitable for hydrochloric acid, bleach or strong oxidisers. PVDF (polyvinylidene fluoride): excellent resistance to most acids, alkalis, halogens and oxidising agents. Suitable for hydrochloric acid, sulfuric acid, hydrogen peroxide, bleach, sodium hydroxide. Widely used for chemical filling. PP (polypropylene): good resistance to acids and alkalis at room temperature. Less suitable for aromatic solvents and chlorinated solvents. Economical option for dilute chemicals. PTFE (polytetrafluoroethylene): nearly universal chemical resistance. Used for seals and nozzle liners in highly aggressive applications. Hastelloy C276: best-in-class corrosion resistance for highly oxidising mineral acids and mixed acid environments. Contact our engineers with your specific chemical, concentration and temperature for a material recommendation.

Required safety features for chemical filling machines may include chemical-resistant enclosure, emergency stop design, grounding and bonding for flammable liquids, vapour capture nozzle, overfill protection, spill containment, operator guards, PPE guidance and ATEX-related documentation review. The zone classification, inspection records and final documentation package should be confirmed by product, site conditions, destination market and technical agreement.

Standard liquid filling machine (food/cosmetic): SUS304/316L construction; standard IP55 electrical enclosure; standard piston seals (NBR or silicone); no vapour control; no explosion protection; no chemical resistance coatings. Chemical liquid filling machine: PVDF/PTFE/Hastelloy wetted parts option; IP65/IP67 sealed electrical enclosure; chemically resistant seals (PTFE, EPDM, Viton, FFKM); vapour capture nozzle option; hazardous-area documentation review option for flammable liquids; anti-static features; dedicated drainage and containment tray; full chemical compatibility documentation. The chemical version requires a separate quotation because wetted materials, seals, enclosure rating and ATEX documentation can change the scope.

Semi-automatic PVDF chemical filler (100ml–5,000ml): scope-based quotation. Automatic PVDF inline filler (4 heads, 20–60 fills/min): scope-based quotation. ATEX documentation review automatic chemical filler (4 heads): scope-based quotation. ATEX Zone 1 automatic chemical filler with full explosion-proof package: scope-based quotation. Complete chemical filling line with drum/IBC filling capability: scope-based quotation. Prices vary significantly based on chemical type, material specification, ATEX zone and fill volume range. Contact us with your chemical safety data sheet (SDS) and production requirements.