Product development SealPro KR series BG4-5 | new mechanical seals

As described above for the BG2-3 series the new seal configuration offers for the larger pump models of the BG 4 and 5 an increased system pressure to 6 bar. This due to the positive balancing of the seal. For applications with poor suction conditions (self-priming pumps, bad NPSHa, too small suction pipe diameters etc) we now can apply impellers without the pressure release bores.

However, we will continue to supply the impellers with the bores in order to  guarantee the optimum flushing of the seal faces. This is an important feature for liquids with sludge.