Describe the finished pack, not only the machine you think you need.
A useful pump-capping enquiry starts with the bottle, neck finish, pump collar, actuator and dip tube. State whether the pump is supplied locked or unlocked, whether the actuator must finish in a particular direction and how closure security is checked. Those details determine whether the main risk is feeding, insertion, pre-threading, tightening or bottle control.
Use the most difficult production format
Identify the longest or softest tube, the least stable bottle and the closure most likely to arrive tangled or curved from bulk packaging. Include labelled or decorated bottles where cosmetic contact matters. The easiest format should not be allowed to hide a handling problem that appears on the rest of the range.
Separate cycle rate from sustained output
Define the required rate over an agreed production-style run, including normal pump replenishment, bottle supply and permitted operator tasks. Record stops and interventions by cause. This gives a practical basis for comparing a semi-automatic pump capper, an automatic inline pump capper or a separate pump feeding and placement system.
Agree how the finished closure will be accepted
Torque or removal torque may form part of the quality plan, but it should be considered with closure height, thread engagement, actuator direction, leakage, cosmetic condition and reject handling. Use the pump cap torque and quality guide to define a repeatable inspection method before the machine trial.