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...
12mm Fittings
Browse reliable water filtration products, replacement cartridges and installation essentials selected for homes, businesses and specialist applications.
Filter products
Filters
John Guest Pipe Insert - 12mm
MPN:
The John Guest 12mm Pipe Insert is suitable for potable domestic and commercial water app...
John Guest 12mm Push Fit x 1/2" BSP Male Straight Adapter
MPN:
The John Guest 12mm Push Fit x 1/2" BSP Male Adapter is suitable for potable domestic and...
John Guest Shut Off Valve - 12mm Push-Fit
MPN:
A genuine John Guest shut off valve, with 12mm Push-Fit connections making it very easy t...
John Guest 12mm Push Fit Equal Tee Fitting
MPN:
The John Guest 12mm Push Fit Equal Tee Fitting is suitable for potable domestic and comm...
John Guest 12mm LLDPE Tubing
Blue
MPN:
John Guest 12mm Tubing is commonly used in conjunction with John Guest Push Fit fittings ...
John Guest Equal Elbow - 12mm Push-Fit
MPN:
John Guest Equal Elbow with 12mm push-fit connections. Suitable for potable domestic and ...
John Guest Female Adapter - 3/8" Female BSP x 12mm Push Fit
MPN:
John Guest Female Adapter to connect onto 3/8" threaded taps, appliances and fittings. Th...
John Guest Reducing Elbow - 12mm x 10mm Push-Fit
MPN:
John Guest Reducing Elbow with 12mm x 10mm Push-Fit connections. Suitable for potable dom...
John Guest End Stop - 12mm Push Fit
MPN:
The John Guest 12mm Push Fit End Stop is suitable for potable domestic and commercial wat...
John Guest Reducing Straight Connector - 12mm x 10mm Push-Fit
MPN:
The John Guest Reducing Straight Connector with 12mm x 10mm push-fit connections is suita...
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 12mm LLDPE Tubing
White
MPN:
John Guest 12mm Tubing is commonly used in conjunction with John Guest Push Fit fittings ...
John Guest 12mm LLDPE Tubing
Black
MPN:
John Guest 12mm Tubing is commonly used in conjunction with John Guest Push Fit fittings ...
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.
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.