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Bronze Circ vs. Bronze Cartridge Circ

Eric_8 Member Posts: 66
What's the dif?

Can the bronze cartridge circ be used in non-barrier applications?


  • Doug Bird
    Doug Bird Member Posts: 22

    Bronze cartridge 00 circs have non-ferrous internal moving parts with a cast iron casing which can quickly load up with rust in non-barrieir tubing systems. We recommend all-bronze circs with non-barrier tubing.
  • Eric_8
    Eric_8 Member Posts: 66

    So what is the point of the bronze cartridge circs?
  • Doug Bird
    Doug Bird Member Posts: 22

    It helps to slow down the rusting process on the rotor in open atmospheric heating systems, like outdoor wood boilers. It's also a good idea for non-barrier radiant systems,drain-back solar jobs, factory wet testing by boiler OEM's or any non-potable application that is open, unpressurized and prone to air in solution.
    The best choice for these applications is an all-bronze circ but a lower cost alternative is an iron pump with a bronze cartridge to keep the moving parts rust free.
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