Introduction, Principles of operation, Ntroduction – Pulsafeeder OMNI Series DC2-6 EN User Manual
Page 5: Rinciples, Peration

1
1. Introduction
The OMNI
®
metering pump is positive displacement, mechanically operated reciprocating diaphragm
pump. Each pump consists of a power end and a process end separated by a PTFE faced diaphragm.
Individual pumps will vary in appearance due to various liquid ends and accessories; however, the basic
principles of operation remain the same.
2. Principles Of Operation
Figure 1, reagent head operation
A diaphragm reciprocates at a preset stroke length, displacing an exact volume of process fluid.
Diaphragm retraction causes the product to enter through the suction check valve. Diaphragm advance
causes the discharge of an equal amount of the product through the discharge check valve.
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