Internal filter replacement for PETRO-PIPE® filter (set of 4)
Even without hydrocarbon or ester pollution, the PETRO-PIPE® filter can sometimes be clogged by too many impurities in the drainage water. The internal pre-filter installed in the head of the SPI® filter is made of foam and a black diffuser; it must be changed regularly to ensure optimal drainage of the wasterwater.
In order for PETRO-PIPE® filters to maintain sufficient flow, the internal pre-filter must be kept as clean as possible. If there are too many impurities in the drainage water and even with an external pre-filter box type PFB, the foam and black mesh in the cartridge must be changed. Sold by sets of 4, excluding filter.
Steps to follow:
Unscrew the top of the PETRO-PIPE® cartridge,
Remove all internals,
Place the replacement foam inside the cartridge,
Add the black mesh over the foam,
Close the top part and tighten strongly.