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Ravenheat Washer For Gas Valve 5018040

Ravenheat

Ravenheat Washer For Gas Valve 5018040

Ravenheat gas valve washer, part 5018040, for RSF 820/20 and RSF 820/20T natural gas boilers.

At a glance

  • Part type: washer / seal for gas valve
  • Also known as 1840203
Manufacturer part no.
5018040
GC number
372-859
Showing prices

£1.93

£1.61 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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 gas valve washer supplied by Ravenheat under part number 5018040. It seals the joint at the gas valve on Ravenheat RSF 820/20 series natural gas boilers. The washer forms part of the gas-carrying assembly and must be fitted correctly to maintain a sound joint.

Signs this part needs replacing

  • A gas smell or a detectable leak at the gas valve joint during a tightness test
  • Soap solution or leak detector fluid bubbling at the valve connection
  • The washer is visibly perished, cracked, flattened or hardened
  • Discolouration or staining around the gas valve joint
  • The washer has been disturbed or reused after the gas valve has been removed

Before you order

  • Confirm the boiler model is an RSF 820/20 or RSF 820/20T natural gas unit
  • Check the GC number on the appliance data badge against the model listed
  • Confirm the washer is required at the gas valve joint and not elsewhere on the appliance
  • Gas-carrying parts must be fitted and tested by a competent, registered engineer

Not sure which part?

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