Locking valves type Kuhnke 47. For setting flow rates and cylinder speeds, very fine regulation, optimum agreement from spindle rotation to setting characteristic; pressure range: Max. 8.0 bar, nominal width: 2.0 mm, material housing: Brass, throttle needle: Stainless steel, installation position: Any, Pressure medium connection: M 5, Medium: filtered, oiled or filtered non-oiled compressed air or other gaseous media with a permissible viscosity according to ISO-VG 10, ambient temperature: â10 to +70 °C. Choke check valve with fixed aperture type 47,251. Can be used where a reduction to low and constant flow values is required (e.g. timing control); pressure range: 0.5 to 8.0 bar. Type 47.251.16, with fixed aperture 0.16 mmThis text is machine translated.