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Caleffi Multibloc 28mm 3/8 Bar Circlip Style PRV HRP0550

Popular Cylinder

Caleffi Multibloc 28mm 3/8 Bar Circlip Style PRV HRP0550

Caleffi Multibloc 28mm 3/8 bar circlip style PRV for Popular Cylinder cold water inlet controls.

Manufacturer part no.
HRP0550
Showing prices

£252.00

£210.00 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 Caleffi Multibloc 28mm 3/8 bar (circlip style PRV) is a cold water inlet control component used on Popular Cylinder appliances. It forms part of the multibloc inlet assembly and incorporates a pressure reducing valve with a circlip style fitting. Its role is to regulate the pressure of the incoming cold water supply as it enters the cylinder.

Signs this part needs replacing

  • Outlet water pressure noticeably higher or more erratic than the set pressure
  • Dripping or continuous discharge from the PRV or its relief pipework
  • Reduced or interrupted cold water flow into the cylinder
  • Leaks or weeping around the multibloc body or its connections
  • Noise or water hammer through the inlet control when taps or valves are operated

Before you order

  • Confirm the existing valve is 28mm and rated at 3/8 bar
  • Check the valve uses the circlip style fixing on the multibloc assembly
  • Confirm the appliance falls within the Popular Cylinder Spares cold water inlet controls range
  • Check the part code on the existing valve or assembly against HRP0550

Not sure which part?

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