Dolphin has spent the last several years analyzing every aspect of seal failure, performance and efficiency of our most popular compact 1.5” Amp Master pump. We were so determined to create the World’s most efficient and maintenance free pump capable of circulating both freshwater and saltwater, also pumping gritty abrasive waters without failure, which will eliminate required seal replacement every year or two. It was obvious we had to pull them off the market and completely re-engineer the liquid end with all parts molded using state of the art high tolerance equipment. Re inventing the common pump seal and using fringe technology also became a prerequisite. The Amp Master Diamond Type 3 & 4 are now the World’s finest Marine and Abrasive Reef Pumps ever produced and carry a lifetime factory service guarantee.
Freshwater use with over double the life expectancy of our other style freshwater seals.
Marine all materials used to provide the life expectancy of type 1seal but composed using only materials designed for pumping clean nonabrasive marine water.
Marine Reef,Freshwater,and many other corrosive waters containing seal damaging abrasives and sand minerals.This is the one we recommend for those who want a virtually maintenance free pump with a seal designed to out last the motor.
The Diamond Seal.The hardest,slipperiest greenest seal made on Earth,with all the advantages of the best seal less pumps made without the disadvantages.Lowest friction,amp draw,life time duty,Marine,Fresh,any abrasive water,quiet and cool running.No Maintenance. When the motor finally fails add a new motor to the Type-4 Wet End and you are running again.