Professional Blind Filter Basket for Espresso Machine Maintenance
The 58 mm Blind Filter Basket is an essential maintenance accessory for professional and semi-professional espresso machines equipped with a three-way solenoid valve. Because the basket has no holes, it allows pressure to build inside the brew group during the Backflush cleaning process, helping remove coffee oils, residues and internal deposits.
Regular Backflushing is considered one of the most important maintenance procedures for preserving espresso quality and extending the service life of the brew group components.
What is Backflushing?
Backflushing is a cleaning process in which the blind filter completely blocks the water outlet. The pump generates pressure inside the group head, forcing the three-way solenoid valve to discharge water together with accumulated coffee oils and residues from the internal brewing circuit.
This procedure helps keep the brew group clean while maintaining consistent espresso flavour and extraction quality.
Use together with Puly Caff cleaning powders
For maximum cleaning efficiency, the blind filter basket should be used together with professional espresso machine cleaning powders such as Puly Caff Plus® or Puly Caff Verde®. These detergents dissolve stubborn coffee oils while the Backflush cycle removes them from the group head and solenoid valve.
This combination is the standard cleaning method used by cafés, restaurants and professional coffee service technicians worldwide.
How often should Backflushing be performed?
For busy cafés and commercial coffee shops, daily Backflushing is generally recommended. Home baristas typically achieve excellent maintenance by performing the procedure once or twice per week, depending on machine usage.
Compatibility
Designed for 58 mm portafilters used with espresso machines equipped with a three-way solenoid valve.
Compatible with many commercial espresso machines, including:
- Cimbali
- Faema
- Rancilio
- VBM
- Astoria
- Bezzera
- Wega
- BFC Royal
- Elektra
- SV
- Sanremo
- Brasilia
- Grimac
- and many other 58 mm commercial espresso machines.
Benefits of using a Blind Filter Basket
- Essential for professional Backflush cleaning.
- Removes coffee oils and brewing residues.
- Helps maintain consistent espresso flavour.
- Supports preventive espresso machine maintenance.
- Easy to use with professional cleaning powders.
- Reusable stainless steel construction.
Technical Specifications
- Product: Blind Filter Basket
- Compatible Portafilter Size: 58 mm
- Outer Diameter: 68 mm
- Height: 17 mm
- Material: AISI 430 Stainless Steel
- Application: Espresso Machine Backflushing
Frequently Asked Questions
What is a Blind Filter Basket used for?
It is used exclusively for Backflush cleaning of espresso machine group heads and is not intended for brewing coffee.
Can I use it without cleaning powder?
Yes, but professional cleaning powders such as Puly Caff Plus® or Puly Caff Verde® are strongly recommended for removing coffee oils and stubborn deposits effectively.
Will it fit every espresso machine?
It is designed for 58 mm portafilters used with espresso machines equipped with a three-way solenoid valve. Always verify compatibility before purchasing.
Why is regular Backflushing important?
Routine Backflushing removes coffee residues from the brew group, helps maintain espresso flavour, improves hygiene and supports the long-term reliability of your espresso machine.