Lees Check Valve Spring is an essential accessory for every air pump. Provides protection during a power or pump failure.

• Prevents water from back-siphoning into air pump
• Avoids potential damage to air pump, carpet, furniture, and tank drainage
• Provides protection during a power or pump failure

Lees Check Valve prevents water siphoning from the aquarium which may damage carpet, furniture and air pump or drain aquarium, killing fish or other inhabitants.