DN80 Insulation Jacket

This Greenlife DN80 insulation jacket is shaped to fit the largest housing in the Greenlife closed circuit filter range, the DN80 (3in) size, reducing heat loss and preventing condensation on its casing. WrekinWater supplies it as a proper replacement for a damaged or missing jacket on larger commercial and plant-room installations, sized around the DN80 housing's union and valve fittings rather than generic lagging. It's intended specifically for the DN80 housing and won't fit the smaller sizes in the range.

Signs you need this part

• The jacket on a DN80 housing is torn, flattened or missing entirely.
• Condensation is forming on the exposed casing of a larger plant-room filter.
• The pipework around the housing feels noticeably warm, suggesting heat loss.
• A replacement DN80 housing has arrived without its insulation cover.

As the largest housing in the range, the DN80 unit has the most surface area exposed to the plant room and carries the greatest flow of heating water, so an uninsulated DN80 housing loses more heat and is more prone to condensation than the smaller sizes. The jacket is shaped around the DN80 housing's union and valve fittings, giving it proper coverage that generic pipe lagging can't match on a housing this size. Leaving it bare doesn't stop the filter working, but it does mean ongoing heat loss and a greater risk of damp forming in a larger plant room.

WrekinWater is a family-run water treatment company based in Bettisfield, Shropshire, with 15 years of trading and more than 50,000 customers served, and an Excellent rating on Trustpilot. Ordering the DN80-specific jacket here ensures it's shaped for the largest Greenlife housing rather than a generic cover that won't fit properly.

How to fit it

1. Isolate the heating system fully before removing any old, damaged jacket.
2. Wipe down the DN80 housing casing so the new jacket sits against a clean, dry surface.
3. Fit the jacket around the housing, matching its cut-outs to the union and valve fittings.
4. Secure the straps or fastenings so the jacket sits tight with no gaps on the larger housing.
5. Confirm the union stays accessible through the jacket for the next service.
6. Return the system to normal use and check for condensation once it's back up to temperature.