First Stage Xstream Deep MK3 G 5/8" Compressed Air by Poseidon

Poseidon first stage for regulator Xstream Deep MK III from Poseidon. What is the difference between the regulator MK3 and the previous version? The first stage of the Xstream MK3 has a safety valve built in. This was necessary because the safety valve in the regulator shell has been removed.
445,95 €
incl. VAT , plus shipping costs
Piece