Even in small shapes, it is possible to produce a large flow. This valve allows air to flow in one direction only and does not flow in the opposite direction. Connection diameter: Rc1; Effective cross-section: 8.9 inches (225 mm); Width: 1.9 inches (49 mm); Depth: 1.9 inches (49 mm); Height: 3.1 inches (80.0 mm); Fluid: Hydraulic oil for air, non-corrosive gas, and low viscosity (250 x 10 - 3 square meters); Fluid temperature: 0.80 °F (0 °C); Working pressure: 0.80 - 80 °C 05-1MP a. Air flow rate: 23.8 - 39.4 gal/min (1,000 - 1,4900 L/min); Country of Origin: Japan; Weight: 16.9 oz (500 g).