Mario
Beware that regulator relief valves often do not carry a CE mark because in the regulator manufacturers small print, they state something like the relief valve is to protect the regulator and not the downstream devices. They may also quote a restriction on line size of 25mm. I have some concern over the validity of this means of bypassing the PED.

Since the PED came into force, all of the relief valve manufacturers Technobots has dealt with, now fully certify their safety relief valves with a CE mark. My understanding is that this is a requirement within the PED.

Simon etc. If sufficient interest exists, I will get another batch of 1000psi relief valves made. Consider that it takes nearly one year for Technobots to sell a single batch and that was with RW in full swing! I can get smaller batches made but the price goes up steeply.

Paul