Site
London
Job Type
Reactive Maintenance
Equipment
Grundfos 3-Stage Booster Set
Components
3 x DN32 Composite NRVs
Pressure Verified
6.0 bar
BACKGROUND
The Challenge
Aquaflow Services attended a site in London following reports of reduced system performance and erratic pump behaviour on the building’s cold water booster set. The installation is a three-stage Grundfos unit responsible for maintaining cold water pressure across the premises.
On arrival, our engineers identified the root cause, the composite non-return valves on the discharge side of all three pumps were sticking internally. This was allowing backflow between cycles, disrupting pump sequencing and causing inconsistent discharge pressures, a serious reliability concern for a busy commercial site of this scale.
OUR APPROACH
How We Fixed It
RESULTS
Outcomes at a Glance
Downtime
Single attendance. Same day return to service
Safety
Full LOTO procedures implemented throughout
Components
3 genuine Grundfos DN32 NRVs with new seals
Pressure
6.0 bar discharge confirmed and stable
Verification
Pump sequencing, NRV function and leak integrity confirmed
Handover
Fully operational. Zero defects at sign-off
ABOUT AQUAFLOW SERVICES
Specialist Water System Engineers
Aquaflow Services specialise in the maintenance, repair and commissioning of commercial and industrial water systems. Our engineers carry a comprehensive range of genuine manufacturer components, enabling us to diagnose and resolve system failures efficiently, keeping disruption to building operations to a minimum.
From reactive callouts to planned preventative maintenance contracts, we deliver a professional, reliable service across London and the South East. All work is carried out to current industry standards and manufacturer specifications.
Got a water system problem?
Our engineers are ready to respond. Get in touch to discuss your requirements.
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