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Altecnic Reflex Potable Water Vessel PV140W

Altecnic

Altecnic Reflex Potable Water Vessel PV140W

140 litre potable water expansion vessel manufactured by Altecnic under the Reflex name, for sealed hot water systems.

Manufacturer part no.
PV140W
Showing prices

£1,580.28

£1,316.90 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Reflex 140 litre Potable Water Vessel is a diaphragm expansion vessel manufactured by Altecnic and supplied under the Reflex name. It absorbs the expansion of heated potable water within a sealed system, limiting the pressure rise that occurs as the stored water heats. This protects other components in the installation, such as the cylinder and the pressure relief valve, from repeated high-pressure operation.

Signs this part needs replacing

  • The pressure relief valve discharges during heating cycles
  • System pressure rises sharply when the stored water heats up
  • Pressure loss or frequent top-ups are required to keep the system running
  • Water or air escapes from the vessel's air valve
  • Corrosion or weeping is visible on the vessel shell

Before you order

  • Confirm the existing vessel's stated capacity and that 140 litres matches the system requirement
  • Check the vessel is suitable for potable water use
  • Verify the connection arrangement and system pressure match the installation
  • Establish the correct pre-charge figure for the system before commissioning

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.