Patent Number: 6,250,889

Title: Pump with improved priming

Abstract: A pump assembly having a pump with an inlet duct and an outlet duct, the inlet duct including an air separation chamber, which is communicable with a vent of an ejector head in which is provided a venturi to suck air from the air separation chamber and eject it to atmosphere, the ejector head also having a valve member for controlling communication of the vent to atmosphere. A valve member controls communication between the air separation chamber and the ejector head, and the valve members are carried on a common shaft of a float valve assembly which also includes a float carried by said shaft in the air separation chamber, the valve assembly operating so that air in the air separation chamber is sucked into said ejector head and ejected to atmosphere to prime or re-prime the pump, whilst liquid in the air separation chamber is prevented from entering the ejector head.

Inventors: Shepard; John P. C. (Gloucestershire, GB)

Assignee: Godwin Pumps Limited

International Classification: F04D 9/00 (20060101); F04D 9/06 (20060101); F04B 023/08 ()

Expiration Date: 06/26/2018