... /min 2. The orifice hole diameter: dO = 8 mm, stainless steel material. 3. The venturi tube throat diameter: dV = ... 8 mm, stainless steel material. 4. The tank volume: 15 l, water storage tank: 20L 5. Fluid, water used ... model: computer, computer interface and data processing software, differential pressure sensor, the turbine flowmeter and flow integrating instrument. Can online ...