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Orifice Plates and Unions
Orifice Plates and Unions
The document describes flow measurement groups that utilize a system generally composed of two piezometric rings interspersed with a diaphragm. This assembly is clamped between standard line flanges constructed according to various standards (UNI, DIN, BS, AFNOR, ANSI, GOST, etc.). Calculations and sizing are performed according to international standards ISO or AGA - ASME for corner taps.
- Carrier rings: Made from carbon steel, stainless steel in various grades, Monel, Hastelloy, Polypropylene, Teflon, etc.
- Orifice plate: Made from stainless steel in various grades, Monel, Hastelloy.
- Annular chamber with pressure taps and calibrated diaphragm.
- Monolithic design.
- Simple disc with pressure taps derived from line flanges and opening upstream and downstream of the diaphragm.
The external diameter of the rings is calculated to achieve automatic centering on the flanges using the bolts employed on the flanges themselves. The size of the pressure taps is also specified.
Catalog excerpts
PETROSYSTEM Srl Via Gaspare Spontini, 29/4 - 00043 Ciampino (Roma) – Italy Tel:+39 06 7932.1621 Fax:+39 06 7932.1160 Email: [email protected] Web: www.petrosystem.it GRUPPI TARATI PER MISURE DI PORTATA In questi gruppi la misura di portata viene rilevata attraverso un complesso formato generalmente da due anelli piezometrici intercalati da un diaframma. Il gruppo così ottenuto viene serrato tra normali flange di linea costruite secondo qualunque norma (UNI, DIN, BS, AFNOR, ANSI, GOST ecc.). Il calcolo e il proporzionamento viene eseguito secondo le norme internazionali ISO o AGA - ASME per corner taps. DESCRIZIONE GENERALE Materiali - anelli in acc. al C.; acc. inox nei vari gradi; Monel, Hastelloy, Polipropilene, Teflon ecc. - diaframma in acc. inox nei vari gradi, Monel, Hastelloy Tipi - a camere anulari con prese di pressione e diaframma calibrato - monolitico - a disco semplice con prese di pressione ricavate sulle flange di linea e sboccanti a monte e a valle del diaframma Dimensioni diametro esterno degli anelli calcolato in modo da ottenere il centraggio automatico sulle flange a mezzo della tiranteria usata sulle flange stesse. Dimensione prese di pressione BASIC DESCRIPTION Materials - carrier rings: carbon steel, stainless steel, Monel, Hastelloy, Polypropilene, teflon etc. - orifice plate: stainless steel, Monel, Hastelloy, Inconel Types - carrier rings with pressure taps and orifice plate - drop forged single piece ring and plate - simple plate with corner pressure taps drilled on pipe flanges Dimensions outside diameter of rings calculated in order to obtain automatic centering inside matching flange bolts.
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