The SYNTESI® V3V series manual shut-off valve is a reliable and versatile solution designed to ensure maximum safety and efficiency in pneumatic systems. This three-way, two-position, normally closed valve effectively isolates the supply air while simultaneously venting the system, making it an ideal choice for maintenance operations and downtime management. Engineered with flexibility in mind, it offers the option to secure the valve with two padlocks (size SY1) or three padlocks (size SY2) with a 3 mm diameter, as well as an alternative version with a Ø 7 hole for a single padlock, ensuring enhanced protection against unauthorized use. The valve is equipped with practical auxiliary connections on both the front and rear surfaces (1/8” for SY1 and 1/4” for SY2), allowing easy integration of pressure gauges, sensors, or additional air intakes. Available in sizes SY1 and SY2, it supports BSP threaded connections of 1/8” and 1/4”, operates with supply pressures up to 15 bar, and withstands temperatures from -10°C to +50°C. With an impressive nominal flow capacity of up to 4000 l/min (at 6 bar inlet pressure and Δp = 1 bar), the V3V series guarantees dependable performance, making it a perfect choice for industries seeking safety, durability, and efficiency in their pneumatic applications.