Pumps – Expansible chamber type – Having pumping chamber pressure responsive distributor
Patent
1976-04-16
1977-06-28
Vrablik, John J.
Pumps
Expansible chamber type
Having pumping chamber pressure responsive distributor
137512, F04B 3910, F16K 2104
Patent
active
040322661
ABSTRACT:
A valve device for controlling fluid flow into and out of the working chamber of a reciprocating pump. A valve body axially receives the pump connecting rod and includes circumferentially extending, alternately arranged, intake ports and exhaust passageways. Seats are formed on opposed sides of the main body, and a spring-loaded plate abuttingly engages the seats.
An outwardly directed annulus circumferentially extends about a central,, marginal portion of the main body and communicates with the inlet port by means of an outwardly directed cavity which is formed by milling a crescent-shaped portion of a cylinder having an outer peripheral edge portion which intersects the centerline of a vertically disposed, constant diameter port, while the centerline of the axial passageway, port, and cylinder lie along a common line drawn normally to the longitudinal central axis of the valve body.
This configuration of a valve assembly provides a main body having increased structural integrity and improved flow characteristics.
REFERENCES:
patent: 2081222 (1937-05-01), Coberly
patent: 2932312 (1960-04-01), Roeder
patent: 3370545 (1968-02-01), Waibel
Bates Marcus L.
LaPointe G. P.
Vrablik John J.
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