Metering pump

Details Metering pump Metering pump

1987-08-25

1989-09-12

Smith, Leonard E.

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

417502, F04B 2100

Patent

active

048655252

ABSTRACT:
A metering pump comprises a pump chamber with a diaphragm for delivering a metering agent to a metering point. The pump chamber is adapted to be connected with the metering agent tank through a suction conduit comprising a suction valve. Moreover, a return conduit comprising a head valve is provided.
For providing an automatic bleeding or ventilation of the metering pump and the possibility of using the pump also for metering aggressive media, the outlet of the pump chamber is adapted to be connected with the metering point through a second head valve. The outlet is connected with the return conduit and a bleed valve is provided in the return conduit.

REFERENCES:
patent: 1931691 (1933-10-01), Goldberg
patent: 2308974 (1943-01-01), Harper
patent: 3680985 (1972-08-01), Ginsberg et al.
patent: 4236881 (1980-12-01), Pfleger

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