SORUDA SO-G40 is an explosion-proof liquid filling machine built for coating, paint and resin producers that fill hazardous liquids: a weighing measurement method with a pneumatic diaphragm pump draws material straight from 200 L barrels, weighing up to 300 KG per batch at ±0.1% accuracy and 30-50 barrels per hour. It carries an EXdiaIIBT4 rating and runs on AC220V / 50 Hz with a 0.4~0.8 MPa air supply, eliminating the need for manual barrel handling. Depending on the working environment, pipe-through and explosion-proof types can be selected.
2-6 types of ingredient materials can be provided for selection.
Choose self-flow or pump extraction for proportioning operations.
Support single-step operation or automatic linking of formula components.
Available in standard, anti-corrosion, and explosion-proof models for different environments.
Human-machine interaction interface for intuitive weight and formula parameter settings.
Easy modification of parameters; no special requirements for operators.
Automatic sensing bucket restarts ingredients and completes sequential quantitative input.
Automatic reporting function for detection data supports remote reporting and printing.

SO-G40 Technical Structure
| Parameter | Specification |
|---|---|
| Filling Model | LHB Series / SO-G40 |
| Maximum Weighing Capacity | 300 KG |
| Minimum Inductance | 10 g, 20 g, 100 g |
| Filling Accuracy | ±0.1% (depending on filling speed) |
| Filling Speed | 30~50 barrels per hour (depending on the feed flow rate) |
| Applicable Containers | Small-mouthed and open-mouthed barrels with a diameter of ≤ Φ600 × H900 mm |
| Explosion-proof Grade | EXdiaIIBT4 |
| Power Supply | AC220 / 50HZ |
| Air Source | 0.4~0.8 MPa |
| Operating Temperature | -10 ℃ ~ 40 ℃ |
| Structural Material | SUS304 stainless steel |
| Gun Tip Tubing | SUS304 stainless steel and PTFE (316L optional) |
| Material Interface | DN40 quick-installation tower joint, flange joint optional |
| Air Source Interface | 8 mm air pipe connection |
Filling accuracy and output vary slightly with material viscosity, container size and feed flow rate.

SO-G40 Factory & Components
Architectural and latex coatings
Industrial coatings and resin
Wood and furniture coatings
Auto refinish paint
Solvent-based inks and printing
Adhesives and sealants
Chemical and solvent packaging
200 L drum filling and blending lines
The machine weighs up to 300 KG per filling cycle with a minimum inductance of 10 g, 20 g or 100 g, and holds a filling error of ±0.1% depending on the filling speed. Accuracy is at its best when the feed flow stays steady.
It handles both small-mouthed and open-mouthed barrels with a diameter up to ≤ Φ600 × H900 mm, and draws material directly from 200 L barrels with a pneumatic diaphragm pump — so operators no longer lift drums by hand.
Output runs from 30 to 50 barrels per hour, depending on the feed flow rate and the filling weight per barrel. The material interface is a DN40 quick-installation tower joint, with a flange joint optional.
The complete system is manufactured to explosion-proof standards with an EXdiaIIBT4 grade, which is why it suits flammable and hazardous liquids such as solvent-based coatings, inks and resins. Standard, anti-corrosion and explosion-proof builds are available for different environments.
The SO-G40 runs on AC220V / 50 Hz, needs a 0.4~0.8 MPa air supply through an 8 mm air pipe, and works in temperatures from -10 ℃ to 40 ℃. The structure is SUS304 stainless steel and the gun tip tubing is SUS304 with PTFE, with 316L optional.
2 to 6 types of ingredient materials can be selected, using either self-flow or pump extraction. The human-machine interface sets weight and formula parameters, supports single-step operation or automatic linking of formula components, and the automatic sensing bucket completes sequential quantitative input with remote reporting and printing available.
SO-G30 Explosion Proof Liquid Filling Machine — the compact explosion-proof liquid filler in the same G series.
SO-G50 Batching Filling Machine — multi-component batching and filling with automatic weighing.
SO-G20 Explosion-proof Coating Large and Small Can Lid Filling Machine — can capping and filling for small and large cans.