Description
Plastic shop vacuums crack and drop suction when tossed into commercial service trucks. The MetroVac CHV-B4 Black Steel 3-Speed cordless handheld vacuum packs 250 Watts of motor draw inside an all-steel canister drum. It pulls 60 CFM on cordless lithium power. Vacuuming large wood chips or sod clumps plugs the narrow metal nozzle intake neck.
The canister body uses heavy-gauge carbon steel finished with an electrostatic black powder coat that resists chips and shop chemical corrosion. Inside, a 250-watt brushless motor drives a solid aluminum fan impeller balanced to eliminate shaft wobble. Neoprene O-rings seal the canister rim against internal vacuum leakage under full pull. A dual-stage cloth filter sits in front of a fine micro-foam exhaust ring to shield the motor bearings from abrasive grit.
Steel Handheld Hardware Configuration Matrix
Cold-rolled steel housing construction shields internal components from rough jobsite impacts. Technicians swap between three distinct suction speeds via an electronic thumb switch.
- 250-watt brushless motor delivers 60 CFM and 55 inches of water lift.
- All-steel canister drum resists denting and cracking during heavy tool truck transit.
- 3-speed electronic selector regulates motor current to balance suction with battery endurance.
- 14.4 Volt lithium-ion battery pack slides onto the rear motor plate with positive latching pins.
- Washable cloth filter bag traps fine dust particles before air reaches the motor fan.
- Detachable shoulder strap supports canister weight during ladder work and vehicle detailing.
- Flexible 3-foot crush-proof hose connects solid steel extension wands for reach into tight corners.
Dyno Bench Vacuum Telemetry Metrics
On speed three, electrical current draw measures 17.2 Amps from the 14.4 Volt lithium pack under full airflow load. The brushless turbine runs at 28500 RPM, producing 54 inches of static water lift on our sealed manometer. Motor casing temperatures rise by 28°F over a full 15-minute high-speed discharge cycle, leveling at 122°F. Sound meter instrumentation reads 72 dBA at 1 meter distance. Battery output drops past 12 minutes of continuous run time, reducing air volume from 60 CFM to 48 CFM.
Shop Handling Field Boundaries
Weighing 4.5 pounds with battery, this steel canister balances in one hand during vehicle cab cleanouts. Never deploy this dry vacuum for water extraction, radiator fluid spills, or wet plumbing cleanup. Ingesting liquids dissolves the cloth filter, rusts the steel canister interior, and shorts the brushless motor armature.
- Empty the steel canister bucket whenever collected dirt reaches the half-full mark.
- Wash the cloth filter bag in warm water every thirty days and dry for 24 hours.
- Inspect battery terminal blades for dust buildup before locking packs in place.
Commercial Warranty Delivery Manifest
MetroVac backs this cordless steel vacuum with a 1-Year commercial warranty covering the brushless motor and canister body. The kit includes the black steel vacuum, one 14.4 Volt lithium battery, a wall charger, a flexible hose, two extension wands, a crevice tool, and a shoulder strap.
