Australia's Sprintex gains most in nearly 4-weeks on UK water utility procurement progress
** Sprintex SIX.AX rises as much as 1.6% to A$0.064; marks biggest intraday pct gain since February 25 ** Clean-air tech firm says progressed through selection stage of procurement process with UK water utility for specialist blower technologies ** YTD, SIX falls 31.9% (Reporting by Roshan Thomas in Bengaluru) ((Roshan.Thomas@thomsonreuters.com;))