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Bellows valve – Item 61

Bellows valve – Item 61
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Bellows valve – Item 61

Product catalog summary
Specifications:
The document outlines the specifications for a valve system, including components and materials. The main components are the body, yoke, seat, disc, stem, bellows, antifriction disk, gaskets, packing, handwheel, and screws. Materials used include EN-GJL-250 for the body and yoke, stainless steel for several components, graphite for gaskets and packing, and carbon steel for screws.
Procedures:
Maintenance procedures are indicated as 'FREE', suggesting minimal maintenance requirements. The valve features a lubricator, backseat, double anti-friction bearings, rotating disc, and an opening index with anti-rotation function.
Standards and Approvals:
The valve is TA-Luft approved, indicating compliance with specific environmental standards.
Performance Data:
Performance metrics are provided for various valve sizes (DN 15 to DN 200), including dimensions (D, L, H, V), weight (Kg), and flow coefficient (Kv). Temperature and pressure ratings are specified, with pressure decreasing as temperature increases.
Flow Rates:
Flow rates are detailed for different valve openings (20% to 100%) across various sizes, showing the relationship between valve opening percentage and flow capacity.
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Catalog excerpts

Bellows valve – Item 61-1

Caratteristiche principali di serie Main standard features Vite di bloccaggio Stop screw I Ingrassatore Lubricator Doppia ralla antifrizione Double anti-friction bearings Indicatore di apertura con funzione antirotazione Opening index with anti-rotatinon functionOtturatore rotante Rotating disc Sede mandrinata Pressed-in seat Acqua calda e/o surriscaldata, vapore, aria, ecc. Hot water and/or overheated water, steam, air, etc. Componente Corpo Cavalletto Sede Otturatore Stelo Soffietto Disco antifrizione Guarnizioni Baderna Volantino Viti Components Body Yoke Seat Disc Stem Bellows Antifriction disk Gaskets Packing Handwheel Screws Material EN-GJL-250 EN-GJL-250 St. Steel 1.4021 St. Steel 1.4021 St. Steel 1.4021 St. Steel 1.4541 St. Steel 1.4021 Graphite + St. Steel Graphite Pressed steel Carbon steel

 Open the catalog to page 1
Bellows valve – Item 61-2

Dimensioni Size KV alia percentuale di alzata figura 61/R Kv at stroke rate item 61/R Condizioni di esercizio/ Working conditions E’ necessario I’uso dell’otturatore equilibrato quando la pressione di esercizio supera i seguenti valori It is necessary to use the balanced disc when the working pressure is over the following values 200 14 N0TA: Utilizzando una valvola con otturatore equilibrato e indispensabile installaria al contrario, cioe con la pressione sopra I'othiretore NOTE: Using a valve with balanced disc is it essential to install it in reverse my, that is with the pressure on the disc...

 Open the catalog to page 2

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.