Filter Housing Spanners

Make filter maintenance a breeze with these genuine Davey filter housing spanners, designed to perfectly fit various generations of Davey water filter housings. Using the correct tool prevents damage to the housing ribs and ensures smooth, safe opening each time – ideal for replacing cartridges without hassle. Compatible with multiple Davey models (including pre- and post-2019 standard and jumbo housings), these durable spanners are a must-have for reliable water filtration upkeep.

Choose Your Match – Identification Guide

Use the guide below to correctly match your filter housing with the appropriate spanner. Identifying your housing by date, pressure relief button colour and spanner design will ensure correct fitment.

Standard 10" & 20" Slimline Housings

Standard 10" – Pre-July 2019 (ESPAW10-FG)
Fits Davey W10 / W10PR housings manufactured before July 2019.
Identification: Housing features a RED pressure relief button.

Standard 10" – Post-July 2019 (ESPAW10-FGG)
Fits Davey W10PR housings manufactured from July 2019 onwards, including AS10A housings.
Identification: Housing features a BLUE pressure relief button.

Standard 20" (ESPAW20-FG)
Fits W20PR housings.
Note: This housing was discontinued in July 2019.

Jumbo “Big Blue” Housings

Jumbo – Pre-February 2015 (13602)
Fits housings manufactured before February 2015.
Identification: White spanner with 4 female notches (indentations).

Jumbo – 2015 to 2019 (15559)
Fits 25mm housings (RED button) manufactured 2015–2019, and 40mm housings (RED button) manufactured 2015–present.
Identification: Black spanner with 6 male notches (teeth).

Jumbo – Post-July 2019 (WFH45)
Fits housings manufactured from July 2019 onwards, including AS20J housings.
Identification: Housing features a BLUE pressure relief button.
Visual: Blue spanner with 4 male notches (teeth).