Skip to content
John Guest Reducer - 3/8" Stem x 1/4" Push Fit
MPN:
The John Guest Reducer with 3/8" Stem x 1/4" Push Fit is suitable for potable domestic a...
Stem Adapters
Browse reliable water filtration products, replacement cartridges and installation essentials selected for homes, businesses and specialist applications.
Narrow your search
Filters
John Guest 15mm Stem x 12mm Push Fit Reducer
MPN:
The John Guest 15mm Stem x 12mm Push Fit Reducer is suitable for potable domestic and co...
John Guest Reducer - 10mm Stem x 6mm Push Fit
MPN:
The John Guest Reducer with 10mm Stem x 6mm Push Fit is suitable for potable domestic an...
John Guest Stem Adapter - 3/8" Stem x 3/8" Male BSP
MPN:
The John Guest Stem Adapter - 3/8" Stem x 3/8" Male BSP thread is suitable for potable do...
John Guest Reducer - 3/8" Stem x 5/16" Push Fit
MPN:
The John Guest Reducer with 3/8" Stem x 5/16" Push Fit is suitable for potable domestic ...
Stem Adaptor 3/8" Stem x 3/4" Male BSP
MPN:
Stem Adaptor – 3/8″ Stem x 3/4″ Male BSP. Suitable for Everpure Claris filter head.
John Guest Reducer - 8mm Stem x 6mm Push Fit
MPN:
The John Guest Reducer with 8mm Stem x 6mm Push Fit is suitable for potable domestic and...
John Guest Stem to Stem Adapter - 15mm Stem x 3/8" Stem
MPN:
The John Guest Stem to Stem Adaptor with 15mm Stem x 3/8" Stem is suitable for potable do...
John Guest Reducer - 15mm Stem x 3/8" Push Fit
MPN:
The John Guest Reducer with 15mm Stem x 3/8" Push Fit is suitable for potable domestic an...
John Guest Reducer - 1/2" Stem x 3/8" Push Fit
MPN:
The John Guest Reducer with 1/2" Stem x 3/8" Push Fit is suitable for potable domestic a...
John Guest Stem Adaptor - 1/2" Stem x 15mm Push Fit
MPN:
The John Guest Stem Adaptor with 1/2" Stem x 15mm Push Fit is suitable for potable domes...
John Guest Stem Reducer - 5/16" Stem x 1/4" Push Fit
MPN:
The John Guest Reducer with 5/16" Stem x 1/4" Push Fit is suitable for potable domestic ...
John Guest Stem Adapter - 3/8" Stem x 1/4" Male BSP
MPN:
The John Guest Stem Adapter - 3/8" Stem x 1/4" Male BSP thread is suitable for potable do...
John Guest Stem Adapter - 8mm Stem x 3/8" Male BSP
MPN:
The John Guest Stem Adapter with 8mm Stem x 3/8" Male BSP thread is suitable for potable ...
John Guest Stem Adapter - 10mm Stem x 1/4" Male BSP
MPN:
The John Guest Stem Adapter with 10mm Stem x 1/4" Male BSP thread is suitable for potable...
John Guest Reducer - 5/16" Stem x 3/16" Push Fit
MPN:
The John Guest Reducer with 5/16" Stem x 3/16" Push Fit is suitable for potable domestic...
John Guest Stem Adaptor - 1/2" Stem x 1/2" Male BSPT
MPN:
The John Guest Stem Adaptor with 1/2" Stem x 1/2" Male BSPT is suitable for potable domes...
John Guest Stem Adapter - 3/8" Stem x 1/4" Male BSPT
MPN:
The John Guest Stem Adapter - 3/8" Stem x 1/4" Male BSP thread is suitable for potable do...
John Guest Reducer - 1/2" Stem x 5/16" Push Fit
MPN:
The John Guest Reducer with 1/2" Stem x 5/16" Push Fit is suitable for potable domestic ...
John Guest Stem Adapter - 12mm Stem x 3/8" Male BSP
MPN:
The John Guest Stem Adapter with 12mm Stem x 3/8" Male BSP thread is suitable for potable...
Need help choosing the right filter?
Our UK-based team can help match your appliance, system or application to the correct replacement or filtration setup.