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Popular Oil Spares Nipple 3/8M Taper x 1/4M Cone

Popular OIL

Popular Oil Spares Nipple 3/8M Taper x 1/4M Cone

Threaded nipple with a 3/8" male taper thread at one end and a 1/4" male cone thread at the other, for Popular Oil Spares oil boiler assemblies.

Manufacturer part no.
HRP9055
Showing prices

£2.48

£2.07 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

A threaded nipple manufactured by Popular Oil Spares for oil-fired boiler assemblies. It joins a 3/8" male taper thread to a 1/4" male cone thread, allowing two ports with different thread forms to be connected. It forms part of the Popular Oil Spares oil spares range.

Signs this part needs replacing

  • Oil weeping or a damp film around the threaded joint
  • Visible corrosion or pitting on the threads
  • Cross-threaded or flattened thread crests preventing a seal
  • The nipple will not tighten down cleanly into either port
  • Persistent oil residue at the union after re-making the joint

Before you order

  • Confirm both thread sizes and forms — 3/8" male taper and 1/4" male cone — match the ports you are joining
  • Check the mating port threads for damage before fitting a new nipple
  • Verify your appliance model against the manufacturer's parts list

Not sure which part?

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