Introduction
This manual provides detailed instructions for the safe and effective use of your Cob Male Manual Vacuum Pump. Please read all instructions carefully before first use and retain this manual for future reference.
Safety Information
Important: Statements regarding this product have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Consult a healthcare professional before using this device, especially if you have any pre-existing medical conditions.
- Do not use the pump for extended periods or with excessive pressure, as this may cause injury.
- Always monitor the pressure gauge to ensure safe operating pressure.
- Ensure the silicone sleeve creates a proper seal around the base to prevent air leakage and avoid discomfort or suction of other body parts.
- Discontinue use immediately if you experience pain, discomfort, bruising, or any adverse reactions.
- Clean the device thoroughly before and after each use to maintain hygiene.
- Keep out of reach of children.
Product Components
Your Cob Male Manual Vacuum Pump includes the following parts:
- Transparent Vacuum Cylinder with Measurement Scale
- Manual Pump Handle
- Pressure Gauge
- Flexible Hose
- Silicone Sleeves (various sizes)
- Cylinder Base

Image: The complete Cob Male Manual Vacuum Pump assembly, showing the transparent cylinder, manual pump, pressure gauge, and connecting hose.

Image: Detailed views of key components: the pressure gauge for monitoring vacuum, the ergonomic pump handle, the sealing mechanism of the cylinder, and the two included silicone sleeves.
Setup
Follow these steps to prepare your device for use:
- Unpack Components: Carefully remove all parts from the packaging.
- Assemble Hose: Connect one end of the flexible hose to the manual pump handle and the other end to the port on the top of the vacuum cylinder, ensuring a secure fit.
- Select Sleeve: Choose a silicone sleeve that provides a comfortable yet snug fit around the base. Two sizes are typically included.
- Attach Sleeve: Place the selected silicone sleeve onto the opening of the vacuum cylinder. Ensure it is seated properly to create an airtight seal.
- Lubricate: Apply a water-based lubricant to the opening of the silicone sleeve and to the area to be inserted to facilitate comfortable entry and a better seal.

Image: Two silicone sleeves of different sizes, used to create a comfortable and airtight seal with the vacuum cylinder.
Operating Instructions
Use the device as follows:
- Insertion: Gently insert into the lubricated silicone sleeve and cylinder opening. Ensure the base is fully inside the cylinder and the sleeve forms a tight seal against the body.
- Pumping: Begin to pump the handle slowly and steadily. Observe the pressure gauge as you pump.
- Monitor Pressure: Do not exceed a comfortable pressure level. The pressure gauge provides a visual indication of the vacuum created. Stop pumping if you feel any pain or excessive discomfort.
- Duration: Maintain the vacuum for a short period, typically 5-10 minutes. Do not exceed 20 minutes per session.
- Release Pressure: The pump features an advanced trigger with a pressure release valve. To release the vacuum, press the designated button or lever on the pump handle. This allows for instant pressure release for safety and comfort.
- Removal: Once the pressure is fully released, gently remove the device.
- Frequency: Limit use to once per day or as advised by a healthcare professional.

Image: A close-up of the pressure gauge, which allows users to monitor the vacuum level during operation.

Image: A detailed view of the transparent cylinder, highlighting the precise measurement scale for observing changes.
Maintenance and Cleaning
Proper cleaning and maintenance ensure the longevity and hygiene of your device:
- Disassembly: After each use, disassemble the cylinder, sleeves, and hose from the pump handle.
- Cleaning: Wash all components that come into contact with the body (cylinder, sleeves) with warm water and a mild, antibacterial soap. Rinse thoroughly to remove all soap residue.
- Drying: Allow all parts to air dry completely before reassembly or storage. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the device in a clean, dry place away from direct sunlight and extreme temperatures.
Troubleshooting
If you encounter issues with your device, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Loss of suction | Improperly seated sleeve, loose hose connection, damaged sleeve, faulty valve in pump. | Ensure sleeve is flush against the body and cylinder. Check hose connections for tightness. Inspect sleeve for tears or damage; replace if necessary. If the pump valve is faulty (e.g., air flows back), the unit may need replacement. |
| Discomfort or scrotum suction | Incorrect sleeve size, insufficient lubrication, excessive pressure, improper positioning. | Use the correct sleeve size for a snug fit. Apply ample water-based lubricant. Do not exceed comfortable pressure levels. Ensure only the intended area is within the cylinder. |
| Pressure gauge reads incorrectly (e.g., 5psi at zero) | Gauge malfunction. | The gauge may be faulty. While the pump may still function, accurate pressure monitoring will be compromised. Consider replacing the unit if precise pressure readings are critical. |
| Hose kinks easily | Hose length or material. | Adjust positioning during use to prevent kinking. Ensure the hose is not bent sharply at connections. |
Specifications
- Product Dimensions: Approximately 11.5 x 3 x 11.5 inches (L x W x H)
- Weight: Approximately 15.52 ounces
- Material: Superior medical-grade materials
- Water Resistance Level: Waterproof
- Manufacturer: cob
- Model Number: B01MRUDA0U

Image: The Cob Male Manual Vacuum Pump with key dimensions, including overall length and sleeve diameters, for reference.