1. Introduction
This manual provides essential information for the safe and efficient operation of your KATSU 200W Automatic Water Pressure Booster Pump, Model 151434. Please read these instructions carefully before installation and use. Keep this manual for future reference.
1.1 Safety Information
- Ensure the power supply matches the pump's specifications (220V/50Hz).
- Do not operate the pump without water to prevent damage.
- Always disconnect power before performing any maintenance or installation.
- Installation should be performed by a qualified professional if you are unsure.
- Protect the pump from freezing temperatures.
- Keep children and unauthorized persons away from the pump during operation.
2. Product Overview
The KATSU Automatic Self-Priming Water Pressure Booster Pump is designed for efficient and low-noise operation, suitable for household water supply, well water, tap water boosting, garden irrigation, and hot water circulation. It provides a consistent water supply, especially in conditions of insufficient water pressure.

Figure 2.1: Front view of the KATSU 200W Automatic Water Pressure Booster Pump. This image shows the main body of the pump, including the motor housing and the pump head with inlet and outlet connections.
2.1 Key Features
- Automatic Self-Priming: Designed to automatically prime itself, simplifying initial setup.
- Intelligent Flow Control: Microcomputer control system detects water flow and automatically manages pump operation.
- Adjustable Pressure Control: Allows for customization of pressure settings.
- Delayed Start: A 3-second delay upon startup protects the motor and ensures user safety.
- Dry Run Protection: Automatically shuts off if running without water for 6 minutes, restarting after an hour to check water supply.
- Low Noise Operation: Operates at approximately 65dB.

Figure 2.2: Close-up view of the control panel and specifications label on the KATSU pump. This shows the model number, voltage, flow rate, and other technical details, along with the pressure switch settings. Note that the label on this specific unit indicates 120W power.
3. Specifications
| Parameter | Value |
|---|---|
| Model | 151434 |
| Voltage / Frequency | 220V / 50Hz |
| Power | 200W (Please verify the specific power rating on your product's label, as variations may exist.) |
| Max Head (Strike) | 25 meters |
| Rated Head (Strike) | 12 meters |
| Max Flow Rate | 2.0 m³/h (33.33 Liters per minute) |
| Max Suction | 8 meters |
| Applicable Floors | Up to 3 floors, 1-2 taps per floor |
| Switch-on Pressure | 1.6 bar |
| Inlet / Outlet | 90 degrees, 25 mm (1 inch) |
| Cable Length | 20cm (without plug) |
| Installation Size (L x W x H) | 28 x 21 x 29 cm |
| Weight | 9.02 kg |
| Protection Level | IPX4 |
4. Setup and Installation
Proper installation is crucial for the pump's performance and longevity. Follow these steps carefully:
- Location: Install the pump in a dry, well-ventilated area, protected from direct sunlight, rain, and freezing temperatures. Ensure sufficient space around the pump for ventilation and maintenance.
- Mounting: Secure the pump on a stable, level surface to minimize vibration and noise.
- Piping:
- Connect the inlet pipe (suction side) to your water source. Ensure the pipe diameter is adequate (25mm / 1 inch recommended) and that the pipe run is as short and straight as possible.
- Install a foot valve with a filter at the end of the suction pipe if drawing water from a well or tank to prevent debris from entering the pump and to maintain prime.
- Connect the outlet pipe (discharge side) to your household or irrigation system.
- Use appropriate sealants (e.g., PTFE tape) on all threaded connections to prevent leaks.
- Priming: Before first use, the pump must be filled with water. Locate the priming plug (usually on top of the pump housing) and remove it. Fill the pump casing completely with water until it overflows. Replace the priming plug securely.
- Electrical Connection: Connect the pump to a grounded 220V/50Hz power outlet. Ensure the electrical circuit is protected by a residual current device (RCD) for safety. The pump comes with a 20cm cable without a plug, requiring professional wiring.

Figure 4.1: Top view of the KATSU pump, highlighting the priming plug (brass cap) and the inlet/outlet ports for water connections. This view is essential for understanding how to prime the pump and connect plumbing.
5. Operating Instructions
Once installed and primed, the pump operates automatically based on water demand.
- Initial Start-up: After priming and connecting to power, the pump will initiate a 3-second delayed start. It will then run to build pressure in the system.
- Automatic Operation: The pump will automatically turn on when a tap is opened or water is demanded, and turn off when the tap is closed and pressure is restored.
- Adjusting Pressure: The switch-on pressure is set at 1.6 bar. The cut-off pressure can be adjusted using the screw on the pressure switch. Refer to Figure 2.2 for the location of the pressure switch. Caution: Adjustments should only be made by a qualified person with the power disconnected.
- Dry Run Protection: If the water supply runs out, the pump will automatically shut down after 6 minutes to prevent damage. It will attempt to restart after one hour to check if the water supply has returned.
- Low Flow Mode: For very low water flow, the microcomputer control system will automatically switch to a "small flow control mode" to ensure stable operation and prevent rapid cycling ("pops pops" noise), extending the life of the pressure switch.
6. Maintenance
Regular maintenance ensures optimal performance and extends the life of your pump.
- Regular Inspection: Periodically check for leaks, unusual noises, or vibrations.
- Clean Filter: If a foot valve with a filter is installed, clean it regularly to prevent clogging and maintain efficient suction.
- Winterization: In areas prone to freezing, drain the pump completely and store it in a warm place, or insulate it adequately to prevent ice damage.
- Electrical Connections: Ensure all electrical connections are secure and free from corrosion.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not start | No power; tripped circuit breaker; motor fault. | Check power supply; reset breaker; consult a technician. |
| Pump runs but no water | Pump not primed; air leak in suction line; clogged foot valve/filter; water source empty. | Re-prime the pump; check suction line for leaks; clean filter; check water level. |
| Low pressure or flow | Partially clogged filter; air in system; worn impeller; too many taps open. | Clean filter; check for air leaks; reduce water demand; consult technician for impeller. |
| Pump cycles on and off frequently | Small leak in system; pressure switch needs adjustment; faulty check valve. | Check for leaks in plumbing; adjust pressure switch (professional only); inspect check valve. |
| Excessive noise | Air in pump; cavitation; loose mounting; foreign object in impeller. | Re-prime; ensure adequate water supply; tighten mounting bolts; inspect impeller. |
8. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact KATSU Tools directly. Keep your proof of purchase for warranty claims.
Manufacturer: KATSU Tools
Contact: Refer to KATSU Tools on Amazon for further information or visit the official KATSU Tools website.



