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Altecnic 533 Unvented Kit 3 Bar PRV 8 Bar SRV

Altecnic

Altecnic 533 Unvented Kit 3 Bar PRV 8 Bar SRV

Altecnic 533 unvented kit containing a 3 bar pressure reducing valve and an 8 bar safety relief valve for unvented control valves.

Manufacturer part no.
533118 CST
Showing prices

£164.80

£137.33 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 Altecnic 533 unvented kit pairs a 3 bar pressure reducing valve with an 8 bar safety relief valve for use on Altecnic unvented control valves. It forms part of the control valve arrangement that regulates incoming mains pressure and provides a pressure relief path on an unvented hot water cylinder. The kit is listed under the Altecnic unvented control valves range.

Signs this part needs replacing

  • Water passing from the discharge pipe or tundish when the cylinder is not heating
  • Outlet pressure drifting above the 3 bar setting, or pressure fluctuating at hot taps
  • Reduced or inconsistent hot water flow at outlets served by the cylinder
  • Dripping or weeping from the relief valve body or its connections
  • Scale, debris or hardened deposits found on the valve seat or internals during inspection

Before you order

  • Confirm the cylinder is fitted with an Altecnic unvented control valve assembly
  • Check the existing valve settings match 3 bar reducing and 8 bar relief before ordering
  • Have the cylinder manufacturer's unvented installation instructions to hand for correct setting and commissioning
  • Quote product code 533118 CST when ordering

Not sure which part?

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