We have changed the order numbers for articles with set pressure, i.e. all blow-off and safety valves. The ordering code for the component-tested safety valve 351 illustrates the systematics.
If you previously ordered the safety valve DN 8 with connection G ¼ with 10 bar with 351.227, then this now corresponds to 351.227-10.0. If you additionally require a test certificate (works certificate 2.2 to EN 10204:2004), this would be order number 351.227-10.0E.