Walnut Blasting With Simultaneous Recovery and HEPA Filtration
The HTS728 blasts fine walnut-shell media with compressed air while recovering media and carbon residue through HEPA and dust filtration. It cleans intake ports and valves, and the combustion chamber through the spark-plug hole where the vehicle service procedure supports it. An external compressor is required and not included.
- Blast + Recover Together
- HEPA Filtration
- Recovery / Filling Modes
- 0.4–0.6 mm Media
- Combustion-Chamber Capable
Key Features
-
Integrated Recovery and Filtration
The machine sprays and recovers at the same time; a filter cartridge and screen separate carbon from walnut media so suitable media can be reused.
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Recovery and Filling Modes
Dedicated switches for recovery and media filling, with power and filling indicator lights on the control panel.
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Dual-Mode Nozzle Handle
Switch between blasting mode for carbon removal and air-only mode for clearing residual media and deposits.
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Pressure Control
A pressure gauge and regulating knob let you monitor and set blasting pressure per the manual.
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Intake, Valve and Combustion-Chamber Cleaning
Work port by port across intake manifolds and intake valves; combustion-chamber, exhaust-valve or other extended-area cleaning only where the vehicle procedure supports it.
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Workshop Mobility
Handle and 360° swivel casters move the unit between bays.
Highlights
Control Panel
Mode switches, indicator lights, pressure knob and gauge in one row.
Nozzle Handle
Blasting and air-only buttons on the handle.
Filtration and Reuse
Built-in filter cartridge and screen separate carbon from recovered media.
Before and After
Results depend on the engine and the cleaning area its service procedure supports.
More Specifications
| Product size | 1110 × 590 × 535 mm |
|---|---|
| Hose length | 2.5 m |
| Blasting time per intake port | About 2 minutes before inspection |
HTS728 vs HTS678
| HTS728 | HTS678 | |
|---|---|---|
| Rated power | 1400 W | 1500 W |
| Walnut media size | 0.4–0.6 mm | 0.6–1.2 mm |
| Adapter types | 5 | 23 |
| Modes | Recovery / Filling | Standard / Expert |
| Combustion-chamber cleaning | Yes | No |
| Storage box / telescoping handle | No / No | Yes / Yes |
What’s in the Box
- HTS728 walnut blasting machine
- 5 vehicle adapters and blasting nozzles
- Recovery hose, transparent hose and blasting hose
- Elbow connectors and connection parts
- Safety goggles
- User manual
Walnut media inclusion and quantity depend on the selected package option.
How to Use
- Set up the machineConnect the recovery hose and elbow, the blasting tube or nozzle, the external air supply and AC power.
- Load walnut mediaSet Recovery off and Filling on, add compatible media within the load limit, then switch Filling off and build pressure.
- Prepare the vehicleRemove spark plugs or the intake manifold as the procedure requires, close the target valves and seal the other ports.
- Clean intake portsMake a sealed recovery connection, switch Recovery on, set nozzle depth and pressure, and clean each port in sequence.
- Clean the combustion chamberOnly where supported: work through the spark-plug hole with valves closed and recover media throughout.
- Clear residueStop media and air, complete final vacuum recovery and inspect with good lighting or a borescope.
- Reassemble and checkRefit parts, then complete leak checks, diagnostic scanning and idle checks.
Media loading, air setup, combustion-chamber procedures and maintenance: HTS728 user manual (PDF).
Good to Know
Caution
- Requires an external compressor supplying dry, filtered air; check that the tank, hose, fittings and duty cycle support the required airflow.
- Never blast with the target valve open, and do not clean an area just because the nozzle can reach it.
- The adapters and nozzles fit multiple port shapes but are not universal; confirm fit and seal on each engine.
- Remove all visible residual media before starting the engine rather than relying on it to burn away.
- Walnut-shell dust may trigger allergies; wear goggles and respiratory protection, ventilate the area and follow the media supplier’s SDS.
Care
- Keep media dry and replace it if it becomes contaminated or clumped or cleaning performance drops.
- Decide when to clean through inspection and diagnosis, not a fixed mileage interval.
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