Rancilio Expansion Valve Connector Union for Silvia Compatibility
This Rancilio Expansion Valve Connector Union for Silvia is needed to connect the over-pressure relief valve to the Silvia's boiler. Solid Brass. Genuine Rancilio part number 23000256. You will need 2 of the copper washers. Rancilio recommends 1 of the 11x7x1 and 1 of the 11x7x1.5. It varies from Silvia to Silvia, so J.L. Hufford recommends purchasing 2 of each, as the cost is minimal.