Spare Part – Out Check Valve for ULTRAMAX External Filters
The Out Check Valve is a dedicated spare part for AquaEL’s ULTRAMAX external filter series, designed to be installed on the outlet (return) side of the filter. It ensures unidirectional water flow and prevents reverse siphoning or leakage when the filter is powered off or disconnected during maintenance.
Key Features
- Non-return function: Prevents backflow from the aquarium into the filter system.
- Essential during servicing: Maintains water in the outlet hose when the filter is removed or opened for cleaning.
- Perfect fit: Designed specifically for ULTRAMAX 1000, 1500, and 2000 models.
- Robust build: Manufactured from durable, aquarium-safe materials suitable for both freshwater and marine use.
Installation Instructions
- Identify the outlet hose (return line to the aquarium).
- Cut the hose at the desired location and insert the check valve, ensuring the arrow on the valve body points towards the tank (in the direction of water flow).
- Secure with hose clamps if needed for leak prevention.
Benefits of Using an Out Check Valve
- Prevents siphoning accidents and loss of water during disconnection.
- Helps retain prime in the filter, making restarts faster and easier.
- Improves the safety and cleanliness of filter maintenance.
Specifications
- Product name: Out Check Valve – ULTRAMAX
- Compatible with: ULTRAMAX 1000, 1500, 2000
- Hose compatibility: 16/22 mm outlet tubing
- Material: High-quality plastic
- Installation: In-line on outlet hose
AQUAEL Tip
For optimal performance and long life of your filter system, inspect the check valve regularly and replace it if signs of wear or blockage appear. Use original AquaEL parts for the best compatibility and safety.


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