BUZZ-Spirax-Sarco: top UK midcap loser on lacklustre H1
** Spirax-Sarco Engineering, a manufacturer of steam control valves and pumps down c.3.4 pct, top midcap loser & on track for sharpest one-day fall in nearly 3 mnths
** Co posts a 1 pct fall in H1 adj pretax profit, citing slowing growth rates in industrial markets in Asia and South America
** Investec (LSE: INVP.L - news) analyst says consensus likely to be trimmed post results, and puts brokerage's estimates, TP of 3340p and "hold" recommendation under review
** 4 of 14 brokerages rate the stock "buy" or higher, 10 "hold" and none as "sell" or lower; their median PT is 3415p
** Taken from Tuesday's close, stock trading at c.27 pct premium to StarMine intrinsic value estimate
** Stock up 18 pct YTD vs 4.9 pct fall in broader FTSE-350 Industrial Engineering Index (RM (LSE: RM.L - news) : esha.vaish.thomsonreuters.com@reuters.net)