DW
Series
 The
DW series is APV's latest technology rotary lobe pump range.
No other rotary lobe pump on the market today offers such
a wide range of features in one pump. The 26 DW models are
hygienic, 3-A and EHEDG approved and cover all requirements
from 3 liters /100 revs to 1016/100 revs. Maximum pressure
up to 30bar. All product contact parts are AISI 316L stainless
steel and elastomers comply with FDA-requirements.
Features
and benefits
High volumetric efficiency The new DW-range is designed according to the principle: “More
pump for your money”. Internal clearances have been minimized making
the pump so efficient that in medium viscosity applications a smaller pump
size than usual will do the job. This reduces both initial investment and running
costs.
Ultra-hygienic, accommodates harsh CIP-cycles All DW models are CIP/SIP cleanable.
The pumps are designed to withstand rapid temperature changes and can therefore
accommodate very harsh CIP-cycles.
Pulse-free
performance
When
pumping highly viscous products, the DW circumferential piston
pumps run completely pulse-free. This ensures a constant
process flow, as required for instance in connection with
filling machines, safeguards valves, and other equipment
that is liable to damage through pressure surges.
Low
NPSH-requirement
The
highly improved suction capabilities of the DW pump considerably
reduce the NPSH-requirement (Net Positive Suction Head required).In
combination with the absence of pressure pulsations, this
makes the DW pumps ideal for many applications, such as ultra-filtration.
Gentle
product handling
The
rotor designs ensure maximum product integrity and minimize
risk of potential damage to sensitive products. The circumferential
piston rotors, as well as the new twin lobe rotors are suitable
both for high and low viscosities and will also handle cheese
curds and whey, soft fruit and meat which until now required
fitting of special rotors.
Easy
Maintenance
The
easy-to-access front loaded mechanical seals reduce maintenance
time considerably. All shaft seal O-rings are identical and
access to the shaft seal is achieved by simply removing the
front cover and the rotors. Likewise, timing of rotors is
an uncomplicated procedure.
Low
noise levels
Patented rotor design
practically eliminates hydraulic noise and the helical gears
minimize gearbox noise. |
