Last Updated on 30th March 2025 by Charlie Walsh
Here is an official video explaining how to use the Hydromax model.
HOW THE HYDROPUMP WORKS
The Hydropump functions by creating a vacuum seal against the pubic area of the user, enclosing the flaccid penis.
When the pump is pushed downwards against the body, the bellows compress and water is ejected from the end of the pump via the open valve.
When released the bellows expand and the valve closes, creating a partial vacuum inside the pump. This causes the penis to expand and fill with blood, creating an erection.
Re pumping increases the vacuum, and so increases the size of the erection.
The user controls the level of vacuum by depressing the valve inwards against the spring, opening the valve and allowing air or water back into the body of the pump, thereby partially or fully releasing the vacuum.
The vacuum in Bathmate Hydropumps is created by the elastic recoil strength of the bellows pump, so the user cannot exceed the safe partial vacuum levels allowed under European and USA medical regulations.
OPERATING THE VALVE
The black pip on the top of the valve is moved by pressing inwards and moving to the right or left, where it should “click” into position, closing the valve. The closed position should only be used whilst filling the Hydropump with water in the shower.
At all other times the black pip should be in the central (open) position. Failing to ensure that the black pip is in the central position will prevent the Hydropump from operating correctly.
USING YOUR HYDROPUMP IN THE SHOWER
- Relax in the Shower for a few minutes.
- Push the black pip into the closed position with your finger, remove the comfort insert (to prevent trapped air) then invert the Hydropump under the shower head until full of water.
- Replace the comfort insert.
- Place the Hydropump over your flaccid penis tight up to your pelvic seat with the black pip in the closed position. The chamfer can be positioned facing either upwards or downwards depending on your level of comfort.
- Make a seal against your body, ensuring that the positioning is comfortable and that your testicles are well clear.
- With the Hydropump angled slightly upwards, open the valve by pushing the black pip to the central position and commence pumping.
- Ensure that the black pip is in the central (open) position when pumping.
- Pump slowly and evenly until the bellows remain depressed, indicating that optimal vacuum has been achieved.
- Ensure you follow the recommended correct use instructions.
- To remove the Hydropump, release the vacuum by depressing the valve cap inwards to activate the quick-release mechanism and slide the Hydropump off your penis.
Using your Hydropump in the bath
- Relax in the bathtub for a few minutes.
- Remove the comfort insert (to prevent trapped air) and fill the Hydropump with bathwater.
- Replace the comfort insert.
- Place the Hydropump over your flaccid penis tight up to your pelvic seat with the black pip in the central (open) position. The chamfer can be positioned facing either upwards or downwards depending on your level of comfort.
- Make a seal against your body, ensuring that the positioning is comfortable and that your testicles are well clear.
- With the Hydropump angled slightly upwards, ensure that the black pip is in the central (open) position and commence pumping.
- Ensure that the black pip is in the central (open) position when pumping.
- Pump slowly and evenly until the bellows remain depressed, indicating that optimal vacuum has been achieved.
- Ensure you follow the recommended correct use instructions.
- To remove the Hydropump, release the vacuum by depressing the valve cap inwards to activate the quick-release mechanism and slide the Hydropump off your penis.
