Portable engine-pump assembly
First Claim
1. In a centrifugal pump having a pump shaft and an impeller mounted for rotation on said pump shaft within a volute chamber, said pump having a pump body split into two separable pieces defining said volute chamber and providing a pump inlet passage and a pump discharge passage, said pump body including a first body portion and a second body portion, the improvement comprising a ball valve for controlling flow through said discharge passage, the said first body portion forming one piece of said two piece pump body and being constructed to define a discharge passage having a housing for receiving and supporting said ball valve therein, and said second body portion forming the other piece of said two piece pump body and being constructed to provide a cover portion closing said ball valve housing, said first and second body portions being secured together at mating faces extending around said impeller.
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Accused Products
Abstract
A portable engine-pump assembly for use in firefighting applications is constructed of a high-speed, lightweight engine and a double-suction pump. The engine is arranged with a vertical crankshaft for driving the pump which is mounted adjacent thereto with a vertical pump shaft coupled to the crankshaft. The assembly is designed to provide high lift, high efficiency and a steady high flow volume and to be compact and light in weight.
12 Citations
6 Claims
- 1. In a centrifugal pump having a pump shaft and an impeller mounted for rotation on said pump shaft within a volute chamber, said pump having a pump body split into two separable pieces defining said volute chamber and providing a pump inlet passage and a pump discharge passage, said pump body including a first body portion and a second body portion, the improvement comprising a ball valve for controlling flow through said discharge passage, the said first body portion forming one piece of said two piece pump body and being constructed to define a discharge passage having a housing for receiving and supporting said ball valve therein, and said second body portion forming the other piece of said two piece pump body and being constructed to provide a cover portion closing said ball valve housing, said first and second body portions being secured together at mating faces extending around said impeller.
Specification