John Guest Male Adapter - 3/8" Male NPTF x 3/8" Push Fit (Polypropylene)
MPN:
The John Guest Male Adapter - 3/8" Male NPTF x 3/8" Push Fit is suitable for potable dome...
John Guest
Browse reliable water filtration products, replacement cartridges and installation essentials selected for homes, businesses and specialist applications.
Filter products
Filters
John Guest Tube to Hose Stem - 3/8" Stem X 5/16" Hose Barb
MPN:
John Guest Tube to Hose Stem with 3/8" Stem x 5/16" Hose Barb connections. Suitable for ...
John Guest 3 Way Stop Valve - 3/8" F x 3/8" M x 3/8" Push Fit
MPN:
The John Guest 3 Way Stop Valve with 3/8" Female x 3/8" Male x 3/8" Push Fit connections ...
John Guest Tube to Hose Stem - 8mm Stem X 6mm Hose Barb
MPN:
John Guest Tube to Hose Stem with 8mm Stem x 6mm Hose Barb connections. Suitable for pot...
John Guest Speedfit Equal Straight Connector - 15mm x 15mm Push Fit
MPN:
John Guest Speedfit Equal Straight Connector with 15mm x 15mm push-fit connections. Suita...
John Guest Speedfit Equal Elbow - 15mm Push Fit
MPN:
John Guest Speedfit Equal Elbow Connector with 15mm push-fit connections. Suitable for po...
John Guest Superseal Pipe Insert - 15mm
MPN:
The John Guest 15mm Superseal Pipe Insert is suitable for potable domestic and commercial...
John Guest Bulkhead Connector - 5/16" Push Fit
MPN:
John Guest Bulkhead Connector with 5/16" Push Fit connections, produced in a grey acetal...
John Guest Collet Cover 1/4" - Blue
MPN:
The John Guest 1/4" Blue Collet Cover helps to prevent the accidental removal or tamperin...
John Guest Tube to Hose Stem - 3/8" Stem X 1/4" Hose Barb
MPN:
John Guest Tube to Hose Stem with 3/8" Stem x 1/4" Hose Barb connections. Suitable for p...
SPECTRUM Aqualyze 10 Inch Filter Housing with PRV
3/4
MPN:
The SPECTRUM Aqualyze 10 Inch filter housing is a hugely popular choice for under-sink fi...
SPECTRUM Aqualyze 10 Inch Filter Housing with PRV
3/8
MPN:
The SPECTRUM Aqualyze 10 Inch filter housing is a hugely popular choice for under-sink fi...
SPECTRUM Aqualyze 10 Inch Filter Housing with PRV
1/2
MPN:
The SPECTRUM Aqualyze 10 Inch filter housing is a hugely popular choice for under-sink fi...
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 Tube to Hose Stem - 6mm Stem X 4mm Hose Barb
MPN:
John Guest Tube to Hose Stem with 6mm Stem x 4mm Hose Barb connections. Suitable for pot...
John Guest Equal Two-Way Divider - 12mm Push Fit
MPN:
The John Guest Two-Way Divider with Equal 12mm Push Fit connections is suitable for pot...
John Guest 1/2" Push Fit x 5/16" Push Fit Reducing Straight Connector
MPN:
John Guest 1/2" Push Fit x 5/16" Push Fit Reducing Straight Connector is suitable for pot...
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 Shut Off Valve Elbow - 1/4" Push Fit x 1/4" NPTF Female
MPN:
Genuine John Guest shut off valve elbow with 1/4" Push Fit x 1/4" NPTF Female connections...
John Guest Speedfit Equal Straight Connector - 10mm Push Fit
MPN:
John Guest Speedfit Equal Straight Connector with 10mm push-fit connections. Suitable for...
John Guest Reducing Elbow - 3/8" x 1/4" Push-Fit
MPN:
John Guest Reducing Elbow with 3/8" x 1/4" push-fit connections. Suitable for potable dom...
John Guest 1/4" Push Fit Equal Tee Fitting (Polypropylene)
MPN:
John Guest 1/4" Push Fit Equal Tee Fitting is suitable for potable domestic and commerci...
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...
Aqua Prime 20" Big Blue Filter Housing with PRV
MPN:
The Aqua Prime 20" Big Blue Filter Housing with PRV is a hugely popular choice for under-...
Aqua Prime 10" Big Blue Filter Housing with PRV
MPN:
The Aqua Prime 10" Big Blue Filter Housing with PRV is a hugely popular choice for under-...
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.
How do I know which water filter fits my system?
Check the model reference on your current cartridge, appliance or system. If you are unsure, contact us with a photo and we will help identify the correct replacement.
Can businesses order in volume?
Yes. Trade and repeat-order customers can request support for volume pricing, scheduled replenishment and specification advice.