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Caleffi Multibloc 28mm 3.5/8 Bar Circlip Style PRV HRP0551

Popular Cylinder

Caleffi Multibloc 28mm 3.5/8 Bar Circlip Style PRV HRP0551

Caleffi Multibloc 28mm cold water inlet control with 3.5/8 bar circlip-style pressure reducing valve, for Popular Cylinder Spares cold water inlet controls.

Manufacturer part no.
HRP0551
Showing prices

£312.56

£260.47 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 3.5/8 Bar is a cold water inlet control assembly for cylinders, supplied with a circlip-style pressure reducing valve (PRV). It sits on the 28mm cold water inlet side of the cylinder and controls the incoming mains supply. This unit is listed for Popular Cylinder Spares cold water inlet controls.

Signs this part needs replacing

  • The pressure reducing valve no longer holds its set outlet pressure
  • Water discharging from the PRV relief or drain point
  • Inconsistent or reduced flow at outlets fed from the cylinder
  • Scale, corrosion or mechanical damage around the inlet control body
  • Weeping or dripping at the 28mm connections or the circlip housing

Before you order

  • Confirm the cylinder cold water inlet connection is 28mm
  • Check the existing PRV is the circlip style
  • Verify the required pressure setting is 3.5/8 bar
  • Compare the markings on the existing valve body before ordering

Not sure which part?

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