Two named foul pumps remain an equivalent-product proposal
Application proposal; permission, procurement and installation unverified · Proposed foul pumping package for the mixed-use application
What the evidence says
The May proposal specifies two Flygt NP3085 1.6 kW submersible pumps or similar, a precast pump sump, 25 m³ holding tank and valve chamber. Its design uses a 160 m rising main in 90 mm HDPE SDR17 at 4 l/s and 7.14 m total head. Emergency storage is approximately 31,400 litres across the sump and holding tank. Ground conditions can require an added slab or concrete surround.
Why it may matter — interpretation
A pump and precast supplier should confirm hydraulic duty, ground conditions and equivalent-product acceptance before pricing.
What is not established
Selected pump, final tank design, award and installation are unknown; no duty/standby mode is inferred.
Inspect the evidence
Foul Water Pump Sump Proposal · p.4
90mm HDPE SDR17 · Issued 2026-05-25 · Pump-sump proposal dated 25 May 2026, received 13 August; catalogue upload 14 August · Checked 2026-09-06
90mm HDPE SDR17
Foul Water Pump Sump Proposal · p.5
Flygt NP3085 1.6kW · Issued 2026-05-25 · Pump-sump proposal dated 25 May 2026, received 13 August; catalogue upload 14 August · Checked 2026-09-06
Flygt NP3085 1.6kW