The Expansion and Non-Return Valve Assembly is designed to regulate and maintain the optimal pressure within your espresso machine, ensuring consistent performance and longevity. By effectively controlling excess pressure, this valve helps produce perfect espresso shots every time, while protecting your machine from potential damage. Expansion and Non-Return Valve Assembly Features Enhanced Safety - Prevents overpressure to protect both the machine and the user. Precision Control - Delivers reliable pressure management for consistent espresso quality. Flexible - Compatible with various espresso machines for straightforward setup. Cost-Effective - Enhances machine life span, reducing the need for frequent replacements and repairs. This Product Includes 1 x Expansion and Non-Return Valve Assembly Specifications Expobar Material Brass Thread Size 1/4"M, 3/8"M Pressure Rating 12 Bar Compatibility Various Expobar Domestic and Commercial Coffee Machines Origin Country Italy Wega Material Brass Thread Size 1/4"M,1/4"M,3/8"M Compatibility Various models of Astoria CMA, Orchestrale and Wega Coffee Machines Origin Country Italy