Series SR type B&BR Spring Return Hydraulic Diaphragm Pump Series
Suitable in case that
– The dosed liquid contains small amounts of suspended solids
– The dosed liquid is a toxic solution
– A drip-proof/airtight application is required
Every pump is fitted with a standard gearbox reduction system and with a vertical mounted B14 shaped electric motor in accordance with the UNEL-MEC specifications.
The motor power range is from 0.18 kW up to 0.75 kW a at European standard: 3 phase voltages of 230/400V @ 50/60Hz, 4 poles, and 1 phase voltages of 230/50-60Hz or 110/60Hz.
As motors conform to UNEL-MEC specifications, there are many available alternative options, including different voltages, insulation classes, and special explosion-proof versions.
The reduction gearbox is of a standard endless screw plus worm-wheel type, supported by bearings, fully lubricated in an oil bath.
The mechanism for the variation of the stroke length is a positive fore-stroke, spring return type, that is operated by an eccentric.
| Model | Qmax l/h | Pmax bar |
| B 125 N | 108 | 60 |
| B 175 N | 418 | 60 |
| B 250 N | 1068 | 23,8 |
| BR 125 N | 108 | 40 |
| BR 175 N | 418 | 40 |
| BR 250 N | 1068 | 20,7 |
