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The Rothenberger 6 CFM (170L/MIN) vacuum pump speeds up the purging of hash oil in a desiccator, precisely removing bubbles and residual gases. This two-stage unit with a non-return solenoid valve ensures cleaner, more consistent, and safer BHO extraction processes in workshops or laboratories.

The Rothenberger 6 CFM (170L/MIN) Vacuum Pump is designed to work with methacrylate or polycarbonate desiccators in the post-processing of BHO.
The flow rate of 170 L/min (6 CFM) and the double compression stage allow a final vacuum of 25 microns / 0.034 mbar to be achieved, a figure suitable for expelling gases trapped after the extraction process.
The unit includes a non-return solenoid valve , which prevents backflow when the machine is switched off, and 1/4" SAE connections with 5/16" SAE M and 3/8" SAE M adapters for watertight joints. The 750 W motor (230 V, 50/60 Hz, 3440 rpm) provides stable traction; the reservoir holds 330 ml of oil , a critical variable for maintaining the vacuum limit.
Weighing 11.7 kg and measuring 335 × 150 × 265 mm , the unit is easy to handle on a workbench. Rothenberger oil, a power cable, and connection accessories are included for easy setup.
At Hydroponics Blanes , a trusted Grow Shop in Spain , it appears within BHO Accessories , BHO tools and BHO extraction kits , with online availability and discreet shipping throughout the peninsula and Europe.
This model integrates with desiccators, vacuum hoses, needle valves, pressure gauges, and heated beds that stabilize the temperature during purging. The resulting system forms a hermetic circuit that accelerates the evacuation of residual solvents and reduces oxidation. The 80 mm vacuum gauge, with readings in mbar/MPa , facilitates visual monitoring of the process. Lightweight materials and a compact design allow for easy assembly of the purging station in confined workspaces.
The Rothenberger 6 CFM (170L/MIN) Vacuum Pump is used to create a deep vacuum in the desiccator containing the freshly extracted hash oil. This vacuum removes unwanted gases and volatiles, reduces bubbling, and stabilizes textures (shatter, budder, crumble). The result is more homogeneous and aromatic concentrates, suitable for demanding BHO extraction standards.
As an extraction tool , it stands out for its two-stage design, high flow rate, and backflow prevention. The included SAE connections ensure compatibility with various desiccators. The oil inspection window allows for checking the level and quality; clean oil guarantees reaching the advertised vacuum limit. The combination of power and portability, along with rapid vacuum recovery, reduces cycle times and increases productivity.
Recommended sequence for purging hash oil in a desiccator:
Good practices: work in a ventilated area, use gloves and protective glasses, and respect local regulations applicable to the use of solvents and vacuum equipment.
The Rothenberger 6 CFM (170L/MIN) Vacuum Pump is competitively priced compared to similar equipment. Its two-stage design, 6 CFM flow rate, and non-return solenoid valve make it a worthwhile investment for those looking to reduce purging times and improve concentrate purity.
Available at Hydroponics Blanes , a grow shop in Spain with a wide catalog of BHO accessories , BHO extraction kits , and BHO tools . Shop online with discreet shipping and expert advice from a trusted grow shop , including a selection of compatible desiccators, hoses, and valves.
The Rothenberger 6 CFM (170L/MIN) Vacuum Pump provides a deep vacuum, anti-return safety, and easy assembly for post-processing BHO in a desiccator. Integrated with thermal control and suitable accessories, it facilitates stable, clean, and aromatic concentrates, with the peace of mind offered by Hydroponics Blanes and discreet shipping on every order.