Series SR type A Spring Return Plunger Pump
Plunger metering pumps are suitable in case that:
– The dosed liquid is a non abrasive solution
– A drip proof system is not essential
– High pressure is required
Each pump is fitted with a standard gearbox reduction system and with a vertical mounted B14 shaped electric motor in accordance with UNEL-MEC specifications.
The motor power range is from 0.18 Kw up to 0.75 KW as the European standard: 3 phase voltages of 230/400V @ 50/60Hz, 4 pole and 1 phase voltages of 230/50-60 Hz or 110/60 Hz.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 variation of the stroke length is a positive fore-stroke, spring return type, that is operated by an eccentric.
| Model | Qmax l/h | Pmax barg |
| A 125 N | 156 | 250 |
| A 175 N | 408 | 250 |
| A 250 N | 1042 | 250 |
| A 350 N | 1458 | 4 |
