JB/T 8811.2-1998 This standard specifies the model, basic parameters and dimensions, technical requirements, test methods, inspection rules and markings, packaging, transportation and storage of manual fuel pumps 2.5MPa. This standard is applicable to manual refueling pumps that add grease and oil to lubrication pumps and have a nominal pressure of 2.5MPa. (Note: JB/ZQ 4542-86 "Manual Fuel Pump (3.15MPa)" will be invalidated from the date of implementation of this standard.)