3/8" M x 3/8" M BSP Pump Fitting w/ Filter Housing classe-9-parts/classe-9-pump-and-heating-element The Steel DUO has one

The Steel DUO has one thermoblock dedicated to coffee and one dedicated to steam

If you're fitting this to a Promac Green model

Remove the chamber

Capacity: 18-20g

Fits: Rancilio S-10

3/8" M x 3/8" M BSP Pump Fitting w/ Filter Housing classe-9-parts/classe-9-pump-and-heating-element The Steel DUO has one3 8" M x 3 8" M BSP Pump Fitting w Filter Housing This 35mm long pump fitting, similar to the V_315 fittings, ships from the factory installed with, but does not include, the I. 3734 filter, which is held in place by the I. 2996 circlip. This listing is for the fitting only. Ascaso part #I. 3499. SPECIFICATIONS Dimensions: 35mm length COMPATIBILITY Fits: Ascaso machines using this pump fitting Replaces: Ascaso part #I. 3499 Works with: I. 3734 filter