By-Pass connection for manual bilge pump PN 01-01-001, or bulk packed PNs 01-31-045/ 01-31-046.
It allows for connecting both the manual pump with an electric submersible bilge pump* in- line using the same hose and connctors.
Reduces the overall cost of a complete bilge pump system by facilitating the installation and reducing the material needed.
*Only to be used with submersible centrifugal type bilge pumps because the electric pump needs to act as strainer without blocking the water when operating the manual bilge pump.