Picarro uses the same type of KNF pump in some of our systems but they might be in different housing:
* Inside a CPVU of a G1000 series analyzer
* G2000 pump (p/n S2000 or A2000)
* Vaporizer pump (p/n S1100)

This video shows one for the S2000 pump housing but the diaphragm replacement part is applicable for all pumps above.