Latest articles on Demo-Bloc 
Remove valve inserts for repair and cleaning or exchange without draining the system with Demo-Bloc(20/03/2009)
During a heating system refurbishment at a care home in the south east the contractor incorrectly identified unmarked radiator flow and return pipes. When installing Oventrop AV6 Series TRV/lockshield combinations on the new Autron low surface temperature radiators, almost half the 50 TRVs were wrongly fitted on to the return end of the radiators. Although the system worked, the radiators with TRVs on the return end had a serious flow reduction and considerable water hammer. It was not unt... [more]
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