Regulation G3 is regarded as the legal requirement for unvented water storage cylinders within the UK and covers the safety aspects. The testing conducted includes the following tests featured within the EN12897 test requirements; hot water draw off, pressure test of coils, pressure test of shell, KW rating of coil, heat loss test, performance testing, durability test (long-term pressure pulse). Join NSF expert, Ian Broad, to learn more about these testing protocols and gain access to an independent test lab with a UKAS accredited test method.