METER TUBE WITH CENTRIC ORIFICE PLATE OF 50 UP TO DN 150

This meter tube is a complete set consisting of the centric orifice plate and straight lengths of piping on the inlet and outlet. The meter tube design is divided into three sections: inlet, in which the fluid flow is straightened, measuring section (orifice plate) and outlet.

Straight lengths of piping in the meter tube comply with all conditions of dimensional and geometric accuracy defined by ISO 5167 standard that are related to pipe sections adjoining the orifice plate. This layout guarantees entrance of stabilized fluid flow into the primary element and accurate measurement of flow rate. Conception of meter tubes also minimizes nonconformities during the orifice plate assembly and their subsequent operation. Division of meter tubes to individual sections also enables easier maintenance inspection and subsequent verification of the meter.

There are chamber differential pressure tapping. These are incorporated in the body of flanges, between which the disc is placed and sealed. The disc is thoroughly centred between the flanges by a simple construction placement. The set of the meter tube consists of stainless steel distance bolts embedded in the flanges clutching the disc. These distance bolts greatly facilitate dismantling and subsequent assembly of the disc. The pressure tapping is led out of the flanges. Upon agreement with the customers outlets of differential pressure are always customized to various options of primary element attachment to the metering circuit.

The meter tube with centric orifice plate is manufactured in the range of nominal diameters DN 50 up to DN 1,000.

Meter tube with centric orifice plate in nominal dimensions DN 50 up to DN 150 is manufactured with straight lengths of piping 10D “downstream” the orifice plate and 5D “upstream” it. Section 2 D “downstream” the orifice plate is separated by a flange joint and it is removable for the purposes of its comfort accessibility and subsequent inspections.

Process connection of the meter tube is ensured by a preparation for weld on both ends as a standard. Upon agreement with customers there can be made a flange.

Carbon, stainless or refractory alloyed steel are the most used steels for the production of meter tubes. The disc of the centric orifice plate is made of stainless steel as a standard. Upon agreement the meter tube can be made of plastic materials, too.

The meter tube with centric orifice plate is manufactured either as a working meter or, as a specified meter with metrological verification complying with the technical particulars and conditions of pattern approval.

Upon agreement the meter tube with centric orifice plate can be manufactured with extended straight lengths of piping or, in DN range different than stated above. The meter tube can be incorporated both in vertical and in horizontal piping.

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