Pulsafeeder DC3 Guia de Resolução de Problemas descarregar pdf (Página 4)

72-001-02 Rev A

1. Introduction

The BLACKLINE

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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