| cold side number of passes | Is a number of items where each item is a tube pass | Number |
| declared unit amount | Specify the amount of declared units contained within the product, eg it's capacity | Number |
| downcomer number of tubes | Is a number of items where each item is a tube | Number |
| economizer number of tubes | Is a number of items where each item is a tube | Number |
| head number of passes | Is a number of items where each item is a tube pass | Number |
| heating coil number of tubes | Is a number of items where each item is a tube | Number |
| hot side number of passes | Is a number of items where each item is a tube pass | Number |
| line shaft bearing quantity | Specify the quantity of line shaft bearings required | Number |
| number of SCSSVs | The total number of surface-controlled subsurface safety valves (SCSSV) (hydraulic and electric) | Number |
| number of accelerometers | Specify the number of accelerometers required | Number |
| number of capacity steps | Specify the number of steps in which the capacity can be regulated | Number |
| number of circuits | The number of circuit-breakers in an electrical distribution board | Number |
| number of connection | Number of lines connected to the equipment | Number |
| number of cores | The number of cores of the functional or physical object | Number |
| number of cylinder | The number of cylinders used in an engine | Number |
| number of downhole hydraulic lines | The total number of downhole hydraulic lines required (including chemical injection, hydraulic surface-controlled subsurface safety valves (SCSSV) and hydraulic IWC lines in total) | Number |
| number of electrical phases | The number of phases in an electrical distribution system | Number |
| number of electrical phases for circuit-breaker | The number of electrical phases a circuit-breaker is designed for | Number |
| number of hydraulic lines for each hydraulic SCSSV | The number of downhole hydraulic lines required for each hydraulic surface-controlled subsurface safety valves (SCSSV) | Number |
| number of junction box cable gland entries | The number of cable gland or multi-cable transit details in the junction box | Number |
| number of passes | Is a number of items where each item is a tube pass | Number |
| number of passes per shell - shell side | Is a number of items where each item is a tube pass | Number |
| number of passes per shell - tube side | Is a number of items where each item is a tube pass | Number |
| number of shafts | Specifies the number of shafts for this functional or physical object | Number |
| number of stages | The number of stages a fluid goes through from input to output (stages in a compressor, stages in a column etc) | Number |
| number of starts | The number of starts of the machine per unit of time | Number |
| number of temperature probes per radial bearing | Specify the number of temperature probes per radial bearing required | Number |
| number of units required | Specify the number of units required | Number |
| number of vanes | The number of vanes | Number |
| number of vibration probes per radial bearing | Specify the number of vibration proximity probes per radial bearing required | Number |
| superheater number of tubes | Is a number of items where each item is a tube | Number |
| wall tubes number of tubes | Is a number of items where each item is a tube | Number |
