Design and features Close-coupled design. Helicoidal impeller. Pump casing with drain port. Pump casing with eccentric volute. High efficiency ( > 70% ) , low power consumption. Motor: IEC B35 1500 rpm. Mechanical seal: EN 12756 ( DIN 24960 L1K) . Connections: DIN 11851. Bearing support integrated into the lantern ( RVS-80R and RVS-100R) . Maximum particle size: ø 75mm. Materials Parts in contact with the product : AISI 316L Lantern  : AISI 316L Other st.st. parts      :   AISI 304 Bearing support ( RVS_ XXR)     : GG 25 Gaskets :   EPDM Mechanical seal  : SiC/ SiC/ EPDM Internal surface finish  : Ra d 0, 8 ¼ m External surface finish    : mirror polish I Technical specifications Max.flow : 180 m³ / h 793 US GPM Max.differential head : 22 mwc 72 ft Max.working pressure : 10 bar 145 PSI Max.working temperature : -10 º C to + 120 º C ( EPDM) 14 º F to 248 º F + 140 º C ( SIP, max. 30 min) 284 º F Max.speed : 1800 rpm