FLOWABLE MATERIAL DELIVERY SYSTEM

摘要

A flowable material delivery system (10) comprises a working fluid valve (26); and, a pump (18) in fluid communication with the working fluid valve (26). The pump (18) is configured to hold a supply of a flowable material such as grout. The valve (26) is operable to provide fluid communication between a working fluid source and the pump (18) so that the working fluid from the fluid source operates the pump (18) to eject the grout in the pump. The valve (26) is also configured to provide fluid communication between the working fluid source and a region outside the pump (18). This provides a fluid bypass to enable relief from pressure arising from a head of the working fluid about the system (10).