Bosch Rexroth Z2FS 6-2-42 1QV Hydraulic Valve

The Bosch Rexroth Z2FS 6-2-42/1QV is a sandwich-plate, double throttle check valve designed to meter flow in one direction while permitting free reverse flow in hydraulic circuits. As part of the Z2FS family, the 6-2-42/1QV designation identifies a size-6 valve with two throttling points and the 1QV flow-version, optimized for precise unidirectional throttling in compact installations. The valve uses a sandwich-plate construction and follows ISO 4401 porting patterns (NG6 interfaces), enabling straightforward integration into modular manifolds. It provides two throttling elements in a single unit, allowing metering of main-line flow and/or pilot flow with predictable backflow control while preserving reverse flow when throttling is not engaged. The Z2FS architecture supports published ∆p–qV characteristic data for its 1Q and 2Q variants, giving designers predictable flow-versus-pressure behavior across operating ranges. The device is specified for hydraulic fluids across a wide operating temperature range from –30 to +80 C, making it suitable for demanding industrial environments. Typical applications include speed control and backflow management in cylinder circuits, actuator manifolds, and other hydraulic circuits where compact, plate-style throttling and check behavior are required.