The DW series is SPX FLOW'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 litres /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 minimised 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, thismakes the DW pumps ideal for many
applications, such as ultra-filtration.
·
Gentle product handling The rotor
designs ensure maximum product integrity and minimise 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.