Introduction
The ALTech Double Tap Nu 15x21 Chrome Brass (Model 4023000001) is designed to provide water supply to two separate devices from a single existing water inlet. This tap is ideal for installations requiring simultaneous connections, such as a washing machine and a dishwasher, to the same water pipeline. Constructed from chrome-plated brass, it ensures durability and reliable performance in plumbing applications.
Safety Information
- Always turn off the main water supply before beginning any installation or maintenance work.
- Ensure all connections are properly sealed to prevent leaks. Use appropriate sealing materials like PTFE tape or pipe sealant.
- If you are unsure about any installation steps, consult a qualified plumber.
- Do not overtighten connections, as this can damage the tap or pipes.
- Keep small parts away from children to prevent choking hazards.
Package Contents
Please verify that all components are present before installation:
- 1 x ALTech Double Tap Nu 15x21 Chrome Brass
- Sealing washers (if included)
Note: Additional plumbing tools and sealing materials are not included and must be acquired separately.
Specifications
| Feature | Detail |
|---|---|
| Manufacturer | Altech |
| Manufacturer Product ID | 4023000001 |
| Product Weight | 400 g |
| Finish | Polished |
| Material | Brass |
| Handle Material | Brass |
| Mounting Type | Deck Mount |
| Coupling Diameter | 15 x 21 (1/2 inch) |
| Special Features | Lightweight |
Setup and Installation
Follow these steps for proper installation of your ALTech Double Tap:
- Prepare the Water Inlet: Ensure the existing water inlet where the double tap will be installed is clean and free of debris. Turn off the main water supply to prevent water flow during installation.
- Apply Sealant: Apply PTFE tape (Teflon tape) clockwise around the threads of the existing water inlet pipe. This helps create a watertight seal.
- Attach the Double Tap: Carefully screw the ALTech Double Tap onto the prepared water inlet. Hand-tighten first, then use an appropriate wrench to tighten it securely. Avoid overtightening.
- Connect Appliances: Attach the water supply hoses from your washing machine and dishwasher to the two outlets of the double tap. Ensure these connections are also sealed properly with washers and tightened securely.
- Check for Leaks: Slowly turn the main water supply back on. Inspect all connections for any signs of leaks. If leaks are detected, turn off the water supply, tighten the connection slightly, and recheck.

Image 1: The ALTech Double Tap Nu 15x21 Chrome Brass, demonstrating its compact design and dual outlets for appliance connections.
Image 2: Detailed view of the tap's inlet connection, highlighting the 15x21 diameter for standard plumbing.
Operation
The ALTech Double Tap operates like a standard quarter-turn ball valve. Each outlet has an independent handle to control water flow.
- Opening Water Flow: Turn the desired handle 90 degrees (quarter-turn) counter-clockwise to open the water flow to the connected appliance.
- Closing Water Flow: Turn the desired handle 90 degrees (quarter-turn) clockwise to close the water flow to the connected appliance.
- Both outlets can be operated independently or simultaneously.
Image 3: Side profile of the double tap, illustrating the separate control handles for each water outlet.
Maintenance
Regular maintenance ensures the longevity and proper functioning of your double tap.
- Cleaning: Clean the chrome brass surface regularly with a soft cloth and mild, non-abrasive cleaner. Avoid harsh chemicals or abrasive pads, which can damage the finish.
- Leak Checks: Periodically inspect all connections for any signs of drips or leaks. Address any leaks promptly by tightening connections or replacing worn washers.
- Handle Operation: Ensure the handles turn smoothly. If they become stiff, a small amount of silicone-based lubricant can be applied to the stem (after turning off water supply and disassembling if necessary, consult a professional).
Image 4: Front view of the ALTech Double Tap, showcasing its polished chrome brass finish, which should be cleaned regularly.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Water leak at connections | Loose connection, worn washer, insufficient sealant. | Turn off water supply. Tighten connections. Replace washers if worn. Reapply PTFE tape. |
| No water flow from an outlet | Handle not fully open, main water supply off, blockage in appliance hose. | Ensure handle is fully open. Check main water supply. Inspect appliance hose for kinks or blockages. |
| Stiff handle operation | Mineral buildup, lack of lubrication. | Clean the tap. If persistent, consult a plumber for internal inspection and lubrication. |
Warranty and Support
For warranty information and customer support regarding your ALTech Double Tap Nu 15x21 Chrome Brass, please refer to the documentation provided at the point of purchase or contact your retailer. Keep your proof of purchase for any warranty claims.