Schaerer 3370073220 Coffee Machine Upper Piston Sieve 30G

The Schaerer 3370073220 Coffee Machine Piston Sieve 30G is a perforated filtration part placed within the assembly to regulate liquid passage during brewing cycles using a mesh structure designed to modulate particle size flow and stabilize pressure through the upper piston chamber interface during operation. It operates by allowing water flow through accurate openings while retaining fine coffee particles and directing uniform distribution across the extraction chamber during piston movement. It is installed within the upper piston housing of compatible coffee machines, aligning with the piston shaft and working in conjunction with sealing and compression elements to ensure consistent brew flow.