Check valve for a double action pump

Details Check valve for a double action pump Check valve for a double action pump

1975-02-21

1976-12-07

Freeh, William L.

Pumps

Successive stages

Reciprocating rigid stages

417559, 417489, F04B 300, F04B 704, F04B 3910

Patent

active

039959660

ABSTRACT:
Double action piston pumps incorporate a check valve mechanism to control material flow between the pumping chambers and the pump outlet. The present disclosure includes an improved check valve mechanism which is mounted in the pump in free floating relation with the pump piston to permit more efficient closing of the check valve and therefore provide more efficient and consistent output flows. This check valve has an inner annular surface surrounding the pump piston and is separated therefrom by a clearance of between .035 and .085 inches. When the check valve is closed, during part of the pumping cycle, it seats on an improved valve plate thereby preventing a reversal of flow. The valve plate on which the check is seated is in a close dimensional tolerance with the piston rod to effectively scrape the piston rod clean thereby preventing the adhesion of the material being pumped to the piston rod.

REFERENCES:
patent: 1575250 (1926-03-01), Brittain
patent: 2122020 (1938-06-01), Barks
patent: 2636441 (1953-04-01), Woelfer
patent: 2787225 (1957-04-01), Rotter
patent: 3312178 (1967-04-01), Rotter
patent: 3814553 (1974-06-01), Hubschmann

Affiliated with

Also associated with

Rating

Check valve for a double action pump does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Check valve for a double action pump, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Check valve for a double action pump will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-376433