For this tank should be installed toroidal 250mm multi-valve 30-degree
Data sheet
Seal for multivalve Tomasetto / BRC
Approval: E20 67R-011038
E20 67R-010916
630/180 Internal Toroidal Tank
Full (centre-filled) toroidal tank
GZWM 55L 680/200
Approval: E7 67R-016027.04
BORMECH 40L 580/200