... tank and recovery tank for CNG station buffer tank,sewage tank and recovery tank, sewage vacuum ... tank for CNG station5 M3 buffer tank with DN1200, design pressure 3.8Mpa;2 M3 ... buffer tank with DN1000, design pressure 4.9Mpa;2M3 recovery ... to us at any time,we'll quote ASAP. buffer tank,sewage tank and recovery tank for CNG station