Remote foaming system and liquid repellent prevention mechanism for such a system

摘要

An exemplary remote foam system includes a foam generator having a suck back mechanism located within the spout, vessel, and spout.The system includes a liquid pump chamber, an air pump chamber, a liquid conduit and an air conduit.The foam generator has a differential bore housing.The differential bore housing has a second portion comprising a first portion having a first inner bore and a second inner bore, and the first inner bore has a smaller diameter than the second inner bore.A piston having a seal extending from the piston contacting the second inner bore is also included.The mixing chamber is located within the large bore.The upstream movement of the seal provides negative pressure to the second mixing chamber and draws the fluid from the outlet.