VERTICAL PUMP EVFA-N
EXTERNAL VERTICAL FLUSHED PUMP EVFA-N
- External vertical flushed to solve the problems of large racking and huge quantities of corrosive liquids to be recycled at low head built in polypropylene (PP), high flow rate for decanting and/ or recycling.
- The advantage of this pump lies in the low speed of the engine (1450) that allows it to operate in continuous service ensuring less wear and tear of the transmission components and mechanical seals that washed with clean water maintain their integrity and functionality over time even in the presence of particularly aggressive liquids, realizable also to single seal without external washing.
- No metal part is in contact with the pumped liquid
- Motor
- Attachment Plate
- Upper Lantern
- Lower Lantern
- Sealing Ring
- Bearing
- Fixed Ring On Water Side
- Mechanical Seal On Water Side
- Bush
- Ogive
- Impeller
- Pump Housing
- Semi-Coupling On Motor Side
- Coupling Sleeve
- Semi-Coupling On Pump Side
- Bearing
- Shaft
- Mechanical Seal On Acid Side
- Fixed Ring On Acid Side
TECHNICAL DATA
MORE INFO?
EVFA-N: external flushed vertical pump for large transfers
The EVFA-N was developed for a specific job: transferring or recirculating large quantities of corrosive liquid at low head. It is an external flushed vertical pump in polypropylene (PP) with a high flow rate, and no metal part comes into contact with the pumped liquid. The motor runs at 1450 rpm. The low speed allows continuous duty and reduces wear on the transmission and mechanical seals, which are flushed with clean water and keep their integrity over time even with particularly aggressive liquids.
Unlike the VSK, VGA and VL, the EVFA-N works with acid-side and water-side mechanical seals separated by a flushing circuit. Compared with the horizontal PMC-2 for high flow rates, it is aimed at continuous low-head recirculation. A single-seal version without external flushing is also available.
- Recirculation in scrubbers and gas washing towers
- Acid transfer pump for large volumes between tanks
- Continuous recirculation of process baths
- High-flow water treatment plants
- Continuous-duty services in the chemical and energy sectors
Frequently asked questions
Why a 1450 rpm motor?
A lower speed reduces wear on bearings, coupling and seals. This makes the EVFA-N suitable for continuous duty, typical of recirculation loops that run for long periods.
What does flushed mean?
The mechanical seals are flushed with clean water. Flushing keeps the aggressive fluid away from the seal faces and cools them, so the seals stay intact even with particularly aggressive liquids.
Is there a version without external flushing?
Yes, the EVFA-N can be built with a single seal and no external flushing. The choice depends on the fluid and operating conditions, which we assess together at quotation stage.