Andrews
Andrews Seal Sight Glass Window Z488
A sight glass window seal for Andrews Fastflo LWHI49 and WHI49 water heaters.
At a glance
- Also known as 1824428
Showing prices
£8.48
£7.07 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
The Andrews Z488 is a sight glass window seal for Andrews Fastflo water heaters. It seals the sight glass viewing port to prevent water leaks. This part is used on Andrews hot water appliances.
Signs this part needs replacing
- Water weeping or dripping from around the sight glass
- Visible cracks, hardening or deterioration of the seal
- Staining or corrosion around the sight glass area
- Difficulty achieving a watertight seal when refitting the sight glass
Before you order
- Check your appliance model against the fit list above
- Confirm the existing seal is the correct type for your sight glass assembly
- Inspect the sight glass and surrounding components for damage
- Ensure you have the necessary tools and access to the sight glass
Compliance
| Alternative numbers | 1824428 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ANDREWS WATER HEATERS ANDREWS HOT WATER SPARES | — | — | — | |
| ANDREWS WATER HEATERS FASTFLO LWHI49 | — | — | — | |
| ANDREWS WATER HEATERS FASTFLO WHI49 | — | — | — |
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.