¡El BERTOLINI Piston Pump es de alta calidad! 1 Premium oversized bearings. 2 Extended length of forged steel crankshaft for a solid coupling pump-motor/engine. 3 Oversized aluminum connecting rods (one piece unit), or brass rods on some models, for maximum strength and easier lubrication. 4 Stainless steel plunger rod nitrating treatment resulting in a harder smoother surface for increased oil seal life. 5 High quality pure ceramic pistons for years of uninterrupted highpressure performance. 6 Exclusive double “V” and “U” self-lubricating packing seals with an elastometer designed to prevent water from contaminating the oil in the crankcase. This gives you years of leak-free operation. 7 Rapid action, mirror finish stainless steel 316 check valves prevent corrosion. 8 Brass head with higher thickness to withstand high pressure.