Structure of a pump valve for concrete mixture pumping trucks

Details Structure of a pump valve for concrete mixture pumping trucks Structure of a pump valve for concrete mixture pumping trucks

1997-04-29

1999-01-12

Fox, John

Fluid handling

Systems

Multi-way valve unit

137874, 417532, F04B 1502

Patent

active

058574905

ABSTRACT:
A pump valve assembly includes a pair of pistons containing cylinder bores opening to a front wall for conveying a concrete mixture from a feed chamber to a delivery tube. A pivotal S-bend tube establishes fluid communication between two valve body wear rings and the delivery tube to cause a translational movement of the input port to the valve assembly between two operative positions in which the input port is in register with the wear rings, the S-bend tube also being engaged with a wear ring. During use, compression of the valve assembly against a positive displacement pump is achieved solely at the front wall of the assembly, with the delivery tube at the rear wall providing only alignment and support, thereby enabling rapid disassembly and access to the valve body and S-bend wear rings.

REFERENCES:
patent: 3132669 (1964-05-01), Feldsted
patent: 4296676 (1981-10-01), Andrews et al.
patent: 4382752 (1983-05-01), Schlect
patent: 4613290 (1986-09-01), Evenson
patent: 4653990 (1987-03-01), Schlecht
patent: 4979884 (1990-12-01), Letarte

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