Dreyoo 40-80 PSI Water Pump Pressure Switch Assembly
Dreyoo 40-80 PSI Water Pump Pressure Switch Assembly User Manual
Model: 40-80 PSI Water Pump Pressure Switch Assembly
1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Dreyoo 40-80 PSI Water Pump Pressure Switch Assembly. Please read these instructions carefully before use and retain them for future reference.
The Dreyoo pressure switch is designed to automatically control water pumps by starting and stopping them based on water pressure. It is compatible with various water pump brands and supports multiple voltage systems (12V, 24V, 110V, 115V).
Note: This product is not suitable for drinking water delivery systems.
2. Package Contents
Verify that all components are present in the package:
- 1 x Pump Pressure Switch
- 1 x Pressure Sensing Diaphragm
3. Specifications
| Feature | Description |
|---|---|
| Brand | Dreyoo |
| Pressure Value Range | 40-80 PSI |
| Supported Voltages | 12V, 24V, 110V, 115V |
| Material | Plastic |
| Color | Black |
| Product Style | Diaphragm |
Compatibility: This switch is compatible with most major brands of water pumps. Refer to your pump's specifications for exact compatibility.

Image: Diagram showing the dimensions (1 inch, 1.2 inch, 1.2 inch) and components of the Dreyoo pressure switch, including the switch diaphragm. It also lists support pressure (12V, 24V, 110V, 115V) and pressure value range (40-80 PSI).

Image: A graphic listing various brands compatible with the Dreyoo water pump pressure switch, including ANBULL, BORDSTRACT, DC HOUSE, DICMIC, DREYOO, ECCPP, and others.
4. Safety Information
- Always disconnect power to the water pump before attempting any installation, maintenance, or repair.
- Ensure all electrical connections are secure and properly insulated to prevent electrical hazards.
- This product is designed for water pump control only. Do not use it for purposes other than its intended use.
- If you are unsure about any installation steps, consult a qualified electrician or plumber.
- Keep children and pets away from the work area during installation and maintenance.
5. Installation
This section details the steps for replacing an existing pressure switch with the Dreyoo 40-80 PSI Water Pump Pressure Switch Assembly. Always ensure the water pump is disconnected from power before beginning.
5.1. Overview of Installation Steps

Image: A four-panel visual guide titled "Easy To Install". Panel 1 shows removing the broken pressure switch assembly. Panel 2 shows reconnecting electrical wires to the switch's two prong connectors. Panel 3 shows adjusting the pressure value. Panel 4 indicates installation is complete.
5.2. Detailed Disassembly and Installation Procedure
Refer to the detailed diagram below for specific steps on disassembling the old switch and installing the new one.

Image: A detailed instruction diagram for the Diaphragm Pump Pressure Switch. It includes sections for "Disassembling the pressure switch" (unplugging, unscrewing cover, disconnecting wires, removing switch and diaphragm) and "Installing the pressure switch" (inserting diaphragm, attaching assembly, securing screws, reconnecting wires, closing cover). Each step is accompanied by a visual reference.
5.3. Visual Installation Guide
Video: An official product video demonstrating the installation process of the Dreyoo Water Pump Pressure Switch. This video provides a visual step-by-step guide for replacing the switch components.
6. Operation
The Dreyoo pressure switch automatically controls your water pump. When a faucet is opened, the pressure drops, and the switch activates the pump. When the faucet is closed, pressure builds, and the switch deactivates the pump.
6.1. Adjusting Pressure Settings
The pressure switch is adjustable within the 40-80 PSI range. To adjust the pressure:
- Locate the center screw under the switch cover.
- Turn the screw clockwise to increase the pressure setting.
- Turn the screw counter-clockwise to decrease the pressure setting.

Image: A visual representation of adjusting the pressure switch. It shows a screwdriver turning a screw, with arrows indicating that turning counter-clockwise decreases pressure and turning clockwise increases pressure.
7. Maintenance
Regular maintenance ensures optimal performance and longevity of your pressure switch.
- Periodic Inspection: Periodically check the switch for any signs of wear, damage, or loose connections.
- Cleanliness: Keep the switch free from dirt, debris, and moisture.
- Diaphragm Check: If the pump is not cycling correctly, inspect the pressure sensing diaphragm for damage or blockages. Replace if necessary.
- Electrical Connections: Ensure all electrical connections remain tight and free from corrosion.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not start | No power; Loose electrical connections; Faulty switch | Check power supply; Secure connections; Test/replace switch |
| Pump runs continuously | Pressure leak in system; Faulty diaphragm; Incorrect pressure setting | Check for leaks; Inspect/replace diaphragm; Adjust pressure setting |
| Inconsistent pressure | Air in system; Partially clogged lines; Incorrect pressure setting | Bleed air from system; Check and clear lines; Adjust pressure setting |
If problems persist after attempting these solutions, contact customer support or a qualified technician.
9. Warranty and Support
For warranty information or technical support, please refer to the product packaging or contact Dreyoo customer service through their official channels. Keep your purchase receipt as proof of purchase.
Manufacturer: Dreyoo
Ask a question about this manual
Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.