Lees Check Valve Spring

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.