Officine Meccaniche Gallaratesi S.p.A products

API 675 plunger metering pumps designed for water treatment and low-cost applications, for safe and cost-effective service with maximum reliability and easy maintenance:

API 675 plunger and double diaphragm metering process pumps, designed to assure the greatest reliability in heavy duties:

API 675 double diaphragm metering pumps, versatile, high efficiency precise and noiseless with intermediate hydraulic control circuit, characterized by their structural simplicity and easy maintenance:

API 675 heavy duty process metering pumps, plunger and double diaphragm type, for large capacity and high pressure services:

OMG has always shown interest in developing so-called special products, which can meet very selective technical requirements (also outside the main Oil & Gas, chemical and petrochemical markets). Thousands of units installed of the following executions deserve particular attention:

Since the early 1980’s, in answer to growing demands from the main engineering companies, OMG extended its activities to cover the design and manufacture of integrated dosing systems including OMG pumps. The market increased progressively allowing OMG to become one of the more consolidated supplier inside the major international Vendor lists.

The first patent for hollow disc rotary pumps was registered in 1918. The hollow disc is set eccentrically on the pump shaft and guided by the diaphragm separating the suction from the delivery chambers. When the shaft rotates, the disc oscillates remaining tangent in any position to the two diametrically opposite walls of the casing, thus forming two mobile fluid-tight joints. In every position the disc is radially and axially balanced . There are no radial components which could detach the disc or press it against the casing, therefore the liquid does not tend to escape. The resultant pressure force is the same in any position so that the absorbed power amount is always uniform. The elastic device acts like a spring by keeping the disc in grazing contact with the cylindrical walls of casing, thus creating an elastic coupling between the central bearing of the disc and the shaft.