Portable Petrol Inverter Generator with Welding Function

Model:JL-4000IWCategory:Petrol Generators
  • Portable petrol inverter generator with built-in welding function
  • Rated 3800W, max 4200W (LPG/Petrol), 230V single-phase
  • Pure Sine Wave output, safe for sensitive devices
  • Inverter welding up to 160A, 100% duty cycle
  • Max electrode Ø4.0mm (Ø8.0mm in parallel)
  • Insulation Class H, Protection Class IP21
  • Engine: JL172F, 7.5HP, OHV, 223cc displacement
  • 7.5L fuel tank with level indicator
  • Clearly labeled rear control panel & welding terminals
  • Compact roll-cage frame for easy transport
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Technical Parameters

Rated Power

3800 W
Max. Power (LPG / Petrol)

4200 W
AC Voltage

230 V
Phase

Single-phase
Output Waveform

Pure Sine Wave
Max. Welding Current

160 A
Duty Cycle

100% @ 160 A
Max. Electrode Diameter

Ø 4.0 mm (up to Ø 8.0 mm in parallel)
Insulation Class

H
Protection Class

IP21
Engine Model

JL172F / 7.5 HP / OHV
Displacement

223 cc
Fuel Type

LPG / Petrol
Fuel Tank Capacity

7.5 L (with level indicator)

Product Description

Power your work and welding needs anywhere with GRETECH JL-4000IW portable petrol inverter generator — a professional-grade dual-function machine built for demanding environments.

⚡ Generator Performance

  • Rated power 3800W, max power 4200W (LPG/Petrol)
  • 230V AC, single-phase, Pure Sine Wave Output — safe for sensitive electrical devices

🔧 Welding Capability

  • Inverter welding output up to 160A with 100% duty cycle @ 160A — stable, professional-grade performance
  • Max electrode diameter Ø 4.0 mm (up to Ø 8.0 mm when connected in parallel)
  • Insulation Class H, Protection Class IP21

🏎️ Engine Specs

  • Engine model: JL172F / 7.5 HP / OHV
  • Displacement: 223 cc
  • Fuel tank: 7.5 L with level indicator for easy monitoring

🎛️ Design & Usability

  • Compact, portable roll-cage frame for easy transport
  • Clearly labeled rear control panel & welding terminals for safe, efficient operation
  • Easy connection designed for demanding working environments

✅ Key Highlights

  • Dual-function: power generation + inverter welding in one unit
  • Pure sine wave ensures compatibility with electronic equipment
  • Parallel connection capability doubles welding electrode capacity
  • Ideal for construction sites, farms, and off-grid professional use

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GRETECH hybrid generators powered by LPG will have the same power output with the gasoline, as our mixing valve of our hybrid generators automatically adjusts air intake and LPG/NG to air ratio, allowing the generators to output same power as do gasoline generators. More importantly, when the LPG/NG generators are in use, their engines rotate steadily, allowing stable power output.

GRETECH LPG/NG generators’ expected life expectancy are more than 2 times longer than that of gasoline generators.

Leakage-Proof: GRETECH hybrid generators’ mixing valve is uniquely designed so that even if the gas regulator or switch is kept on, the gas will never leak.

Easy Start: GRETECH hybrid generators, no matter brand new or not being used in a while, can always be immediately turned on by pulling the recoil rope up to 3 times.

Cost-effective: The fuel consumption costs of GRETECH, LPG (0.36 kg/kw.h) and NG (0.35 m³/kw.h) generators are much lower than gasoline generators (0.5 L/kw.h).

Compatible with source pressure ranging from 2.0 to 6.0 kPa (0.29-0.87PSI), our generators are suitable in almost all environments, including at home.

GRETECH generators use perfect amount of LPG/NG to meet output power, so the gas is always burnt completely, producing clean emissions.

The noise of GRETECH generators is 5dB quieter, as own patented muffler.

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