Mi-T-M Two-Stage Air Compressor / Generator / Welder – 20-Gallon, 688cc Honda OHV, Electric Start
Model: AGW-SH22-20M
Series: AGW Series
Category: Air Compressor + Generator + Welder Combo
Tank Size: 20-Gallon ASME Receiver
Starting System: Electric Start (battery not included)
Engine: Honda® GX690 OHV
The Mi-T-M AGW-SH22-20M is a powerful three-in-one solution, combining a two-stage air compressor, 5,000-watt generator, and DC welder into one rugged unit. Designed for contractors, maintenance crews, and industrial users, this all-in-one system reduces equipment clutter while delivering reliable air, power, and welding capability on demanding jobsites.
Powered by a 688cc Honda GX690 OHV engine, the AGW-SH22-20M produces up to 30.5 CFM, continuous generator output under load, and up to 220 amps of DC welding power, all in a heavy-duty, transport-ready frame.
⚠️ Electric start – battery not included
⚠️ 49-state engine – not for sale in California
Key Features
Compressor Pump
-
Two-stage cast iron compressor pump
-
Splash lubricated for durability
-
Stainless-steel braided discharge hose
-
Large canister intake filter
-
Oil level sight indicator
Generator
-
Brush-type 2-pole alternator
-
100% copper windings
-
Total harmonic distortion (THD) < 6%
-
120V / 240V output capability
Welder
-
DC welding output
-
Amperage selection switch:
-
170A
-
220A (maximum)
-
Frame & Tank
-
20-gallon ASME-certified receiver tank
-
Powder-coated steel construction
-
Powder-coated four-piece belt guard
-
Removable base plate for flexible installation
Components & Controls
-
Regulator with dual gauges (tank & outlet pressure)
-
150-PSI maximum rated regulator
-
Manual drain valves for maintenance
-
16½-inch flywheel
-
Quality pilot valve unloader
AGW Series Operating Modes
Generator Mode
-
AC current only
-
Selector switch set to idle down
-
Engine switch set to full throttle
Welder Mode
-
DC current only
-
Engine must run at full throttle
-
Selector switch set to full throttle
Performance Specifications
Air Compressor Output
| Specification | Value |
|---|---|
| CFM @ 90 PSI | 30.5 |
| CFM @ 175 PSI | 29.0 |
| Tank Size | 20-Gallon |
Generator Output
| Specification | Value |
|---|---|
| Max AC Output | 5,000 watts |
| Rated AC Output | 4,500 watts |
| Continuous (On-Load @ 90 PSI) | 4,500 watts |
| Continuous (On-Load @ 175 PSI) | 4,500 watts |
| Frequency / Voltage | 60Hz / 120V / 240V |
Electrical Capacity
| Specification | Value |
|---|---|
| Max Amps (120V / 240V) | 41.5 / 20.8 |
| Continuous Amps (120V / 240V) | 37.5 / 18.8 |
| Receptacles | (2) 120V 20A GFCI Duplex; (1) 120V/240V 20A Twist Lock |
Welder Performance
| Specification | Value |
|---|---|
| Working Range | 50–220A DC |
| Duty Cycle (10-min run) | 220A @ 40% · 190A @ 60% · 150A @ 100% |
Engine & Fuel
| Specification | Detail |
|---|---|
| Engine | Honda GX690 OHV |
| Displacement | 688cc |
| Rated Speed | 3600 RPM |
| Fuel Tank Capacity | 10 gallons |
| Starting | Electric Start (battery not included) |
Weights & Dimensions
| Measurement | Detail |
|---|---|
| Net Weight | 803 lbs |
| Shipping Weight | 870 lbs |
| Length | 47.00 in |
| Width | 24.00 in |
| Height | 50.00 in |
Compliance & Notes
-
49-state engine / fuel tank
-
Not for sale in California
-
CARB-compliant engine required for CA sales
-
Consult factory for CARB configurations
Ideal Applications
-
Welding and fabrication jobsites
-
Maintenance and repair crews
-
Utility, municipal, and fleet operations
-
Remote locations requiring air + power + welding
Warranty
-
2-Year Alternator Warranty
-
2-Year Pump Exchange Warranty
-
3-Year Honda® Engine Warranty
