Series REG pressure reducing valve, SYNTESI® series, without end connections, is used to regulate working pressure and maintain it at a constant level, ensuring proper operation in the connected installation, regardless of the changing consumption of the medium. The valve uses a shaped diaphragm instead of a flat diaphragm, which provides higher nominal flow values due to a greater diaphragm stroke, as well as greater sensitivity and response speed to changes in settings, by reducing static and kinetic friction of components and increasing accuracy in maintaining the set output pressure with changes in flow and supply pressure values. The “push-lock” mechanism allows the knob to be locked in any position by pressing it. The locking plate enables the installation of a padlock to prevent unauthorized changes to the output pressure setting. They are designed to draw air from connections at the front and back of the body, which can be used to connect a pressure gauge, pneumatic-electric relay, or plug couplings, with direct connection of input and output connections. This allows for the installation of any number of pressure reducing valves next to each other, supplied from a single source, independently adjustable. Size: SY1, SY2. Output pressure range: 0÷2, 0÷4, 0÷8, 0÷12 bar. Supply pressure: up to 15 bar, depending on size. Operating temperature: from -10°C to +50°C. Additional connection for pressure gauge or couplings: BSP 1/8″ for size SY1, BSP 1/4″ for size SY2. Flow: 500 l/min – size SY1, 1000 l/min – size SY2 (at input pressure 6 bar Δp = 1 bar).