ship pump / transfer / lubrication / oil
ZN pumps are designed to handle diathermic fluids up 350°C temperature. Pumped fluids should contain neither abrasive particles nor chemicals which may attack the pump materials. No cooling of the seal chamber required.
ZN serie pumps are of centrifugal, single stage, horizontal shaft type. Self-balancing impeller by rear impeller blades.
The main dimensions of the pump are according to ISO 2858. The bearing housing has been specially designed to dissipate the heat originating from the pump casing and does not require a cooling circuit.
The shaft is supported by two roller bearings, the pump side bearing is lubricated by oil and the coupling side bearing by grease.
The mechanical seal is mounted in the bearing housing between the bearings and its excellent performance is guaranteed by the shaft rigidity.
The standard construction provides the outlet flanges according to UNI 2223/2229 NP 16.
Upon request UNI NP 25 or ANSI 150 RF can be supplied.