Patent ID: 6158628
Filing Date: 2000-12-12
Classification: B67D

Abstract:
A viscous fluid delivery system which comprises:a reservoir for a viscous fluid;means for applying substantially uniform gas pressure to viscous fluid in said reservoir;a dual mode dispense valve having a fluid supply port connected to said reservoir for supplying fluid under said pressure to said port;said valve having a fluid dispense port and a valve head opening and closing said dispense port;said valve head including a high flow valve part and a low flow valve part;a high flow valve part seat defining said dispense port and receiving said high flow valve part for seating the valve head to close the dispense port;said high flow valve part having a low flow dispense opening extending therethrough and a low flow valve part seat defining the opening;said high and low flow valve parts being reciprocally movable together and also relative to each other for dispensing from said dispense port said fluid supplied to said supply port, alternately at a high flow rate with the high flow valve part removed from its seat for opening the dispense port, and at a low flow rate with the low flow valve part removed from its seat for opening said low flow dispense opening and with the high flow valve part seated on its seat.