Gaugeable Tube Fittings and Adapter Fittings (MS-01-140;rev_AH;en-US;Catalog)
Stainless Steel General Utility Service Needle Valve, 1/2 in. FNPT, 0.31 in. (8.0 mm) Orifice | General Utility Needle Valves, GU and F10 Series | Needle and Metering Valves | Valves | All Products | Swagelok
Micro-orifice single-phase liquid flow: Pressure drop measurements and prediction - ScienceDirect
China Custom Flow Control Orifice Fittings Manufacturers, Suppliers - Stainless Steel Flow Control Orifice Fittings - JIAYUAN