For the 50 mbar gas equipments the Ø for gas pipes, hoses and their connection parts are 8 mm. As a result of transpositions to the lower operating pressure of 30 mbar it makes sense to increase the amount of gas which reaches the distributors ( distribution blocks), to secure a sufficient and constant supply of the single loads. That means the connection of gas tank / gas bottle to the distribution block can be provided with a 10mm Ø system. Please note: furthermore the supply from the distribution block to the single loads is to implement with a Ø of 8 mm.