... :brass,Stainless steel Gasket:NBR,PU,PTFE Part:VK,MK,VB,MB din28450 couplingTankwagon coupling DIN28450Stainless steel>> VK5011/2, VK50, VK80 ... ,VB80,VB100,MB50,MB80,MB100Standard>>EN14420-5, DIN28450Part>>VK,MK,VB,MBSize>>2",3",4"Gasket>>NBR,PU,PTFE We mainly ...