Pinch Valves Needle valve UNI EN 1092-1 - GRADUATE HANDWHEEL - 658250 | 4G Ghidini Needle valve UNI EN 1092-1 - GRADUATE HANDWHEEL - 658250 | 4G Ghidini The Needle Valve UNI EN 1092-1 with Graduate Handwheel (model 658250) by 4G Ghidini is a precision control valve designed for fine regulation of flow. It features a PIN valve mechanism and is operated via a graduate handwheel for precise adjustments. The valve connects using revolving threaded flanges compliant with UNI EN 1092-1:2003 standards.... View Flanged PN 40 DIN 1.4404