- Compatibility: Applicable to 404B, 404A, 304B, and 304A models - Pipe fitment: Suitable for tubing with inner diameter of 18 mm or outer diameter of 24 mm - Fastening: Threaded pipe connection provides secure fastening - Maintenance: Easy to clean and disassemble - Application: Suitable for planting aquariums - Key benefits: - Secure threaded connection helps reduce leaks and maintain reliable flow - Simple disassembly aids routine cleaning and inspection - Use scenarios: - In a planted aquarium, connect pipes from pumps or filters that use 18 mm ID or 24 mm OD tubing for a secure, water-tight fit - During routine maintenance, disassemble the connection for cleaning or replacement of components, then reassemble - When updating or replacing plumbing in 404A/404B or 304A/304B setups, use the threaded connection for a reliable seal and simple reinstallation