Treat every accessory as part of the working point
A check valve can stop reverse flow, a filter can protect pump valves and a solenoid can route the circuit. Each part also adds pressure loss, dead volume, leakage risk and response delay.
The integration review should list port size, cracking pressure, filter grade, expected contamination load, valve duty cycle and the pressure or vacuum available after every component.
Design for test and maintenance
Add measurement points before and after high-loss components. This makes it possible to separate pump performance drift from filter loading, valve sticking or tubing damage during field investigation.
If the filter is expected to be replaced, keep it accessible without disturbing the calibrated pump mount or critical tubing length. Service operations should not change the validated fluid path.
Frequently asked questions
Should a filter be placed before or after a miniature pump?
For protection, inlet filtration is common, but the pressure or vacuum loss must be included in pump selection and validated at end-of-life loading.
Related products and engineering resources
Continue with the products, application material and engineering support related to this topic, or submit project conditions for a selection review.