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Popular Cylinder Pressure Relief Valve 4.5 Bar Loose Nut (Plastic Body)

Popular Cylinder

Popular Cylinder Pressure Relief Valve 4.5 Bar Loose Nut (Plastic Body)

4.5 bar pressure relief valve with loose nut connection and plastic body for Popular Cylinder cold water inlet controls.

Manufacturer part no.
HRP0187
Showing prices

£72.00

£60.00 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 Pressure Relief Valve 4.5 Bar Loose Nut (Plastic Body) is a cylinder pressure relief valve from Popular Cylinder. It is part of the Popular Cylinder Spares cold water inlet controls group and is used to relieve excess pressure at a 4.5 bar setting. The valve has a plastic body and a loose nut connection.

Signs this part needs replacing

  • Water discharging from the relief valve outlet when the cylinder is not being heated.
  • Continuous drip or weep from the discharge pipe.
  • System pressure falling or failing to hold.
  • Visible cracking, damage or heavy scale on the plastic body.
  • The valve does not reseat after being operated.

Before you order

  • Confirm the existing valve is rated at 4.5 bar.
  • Check the connection is a loose nut type and that the plastic body is suitable for the installation.
  • Verify the appliance is listed in the Fits section above.
  • Check access to the cold water inlet controls before starting work.

Not sure which part?

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