Advantages: > Most economical: second stage is bypassed whenever possible > Easy to install and maintain > Most safe: Oil Monitoring device always checks effluent > Suction type: preserves pump from attrition > Most compact: suitable for newbuilds and retrofit reliably reaches 5 ppm limit confirmed by DNV GL and LR 15ppm type approved acc. to MEPC.107(49) by DGUV. confirmed by USCG, LR, MED, RMRS, ABS, BV, CCS