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Glow-worm Pressure Relief Valve 0020039576

Glow-worm

Glow-worm Pressure Relief Valve 0020039576

Pressure relief valve for Glow-worm Clearly Solar appliances, used to discharge excess pressure from the system.

At a glance

  • Part type: pressure relief valve
  • Appliance family: Clearly Solar
  • Also known as 1338551
Manufacturer part no.
0020039576
Showing prices

£240.83

£200.69 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

The pressure relief valve is a safety component manufactured by Glow-worm for use on Clearly Solar appliances. It opens automatically when system pressure rises above the valve's set point, discharging water to relieve the excess and protect the appliance and associated components from over-pressurisation.

Signs this part needs replacing

  • Water continually dripping or running from the discharge pipe when the system is at normal pressure
  • System pressure repeatedly rising and requiring manual topping down
  • The valve failing to reseat after it has operated
  • Scale, debris or corrosion visible around the valve seat or outlet
  • Weeping from the valve body or its connections

Before you order

  • Confirm your appliance model against the manufacturer's parts list for the Clearly Solar range
  • Check the set pressure and connection size of the existing valve against the manufacturer's specification for your appliance
  • Inspect the discharge pipework and expansion vessel, as pressure faults are not always caused by the valve alone
  • Have the system depressurised and drained as required before fitting

Not sure which part?

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