PTFE Double-Layer Three-Blade Propeller Paddle, 350 mm Shaft and 57 mm Propellers (CAT#: STEM-BC-3479-ZJF)

This PTFE double-layer three-blade propeller paddle is designed for demanding overhead mixing. Its shaft is reinforced by a stainless-steel core and fully covered with PTFE. Two propeller levels act on different vertical zones of the sample. Each layer has relatively low individual resistance compared with a single larger blade. The paired three-blade propellers promote repeated upward and downward circulation. This structure is suitable for samples with some viscosity or relatively large mixing volumes. The paddle operates in an axial flow pattern at medium speed. PTFE provides chemical resistance, heat tolerance, low adhesion, and smooth operation.

Paddle type: Double-layer three-blade propeller
Shaft length: 350 mm
Shaft diameter: 8 mm
Propeller diameter: 57 mm per listed blade size
Stainless-steel core diameter: 6 mm
Flow direction: Axial
Speed class: Medium
Suitable viscosity: Low to medium, including samples with some viscosity
Blade levels: 2
Maximum working temperature: 280°C

Dual-level mixing
Three blades per layer
Reduced resistance per layer
Strong vertical turnover
Suitable for larger volumes
Viscous-sample compatibility
PTFE corrosion resistance
Stainless-steel core

STEM-BC-0197-ZJF
STEM-BC-3480-ZJF