326 Streamlined flow valve outside screw traditional type

Product catalog summary

Main Standard Features
The document outlines the main standard features of a streamlined flow valve with an outside screw traditional type. Key components include the body, yoke, seat, disc, stem, antifriction disk, gaskets, packing, handwheel, studs, and nuts. Materials used are primarily forged and cast steel, stainless steel, graphite, and carbon steel.

Applications
The valve is suitable for heat transfer systems, thermal power stations, industrial boilers and tanks, district heating plants, and diathermic oil installations. It can handle hot water, overheated water, steam, air, and diathermic fluids.

Working Conditions
The valve operates under varying temperatures and pressures, with a maximum pressure of 40 bar at temperatures between -10°C and 50°C, decreasing to 23.8 bar at 400°C.

Disc Variations
Different disc types are available, including regulating discs, balanced discs, and soft sealing interchangeable PTFE discs. The use of a balanced disc is necessary when working pressure exceeds certain values, and installation must be reversed with pressure on the disc.

Dimensions and Sizes
The document provides detailed dimensions and flow coefficients (Kv) for various nominal diameters (DN) ranging from 15 to 200 mm.

Manufacturing Variations
Various manufacturing variations are available to suit different operational requirements.

Catalog excerpts

326 Streamlined flow valve outside screw traditional type-1

Valvola a flusso avviato a vite esterna tradizionali in acciaio a baderna Streamlined flow valve outside screw traditional type Caratteristiche principali di serie Main standard features Volantino saliente Rising Handwheel Stelo rotante Rotating disc Controtenuta di sicurezza ricavata sullo stelo Backseat Otturatore rotante Rotating disc Sede saldata Welded-in seat Possibili campi di impiego Application Impianti di trasmissione calore, centrali termiche, caldaie e serbatoi, impianti di teleriscaldamento, applicazioni con olio diatermico, ecc. Heat transfer systems, thermal power stations, industrial boilers and tanks, district heating plants, diathermic oil installations, etc. Acqua calda e/o surriscaldata, vapore, aria, fluidi diatermici, ecc. Hot water and/or overheated water, steam, air, diathermic fluids, etc. Materiali Materials Material P250 GH (forged) GP 240 GH+N (cast) P250 GH (forged) GP 240 GH+N (cast) St. Steel 1.4370 St. Steel 1.4021 St. Steel 1.4021 St. Steel 1.4021 Graphite + St. Steel Graphite Pressed steel Carbon steel Carbon steel Components Body Body Yoke Yoke Seat Disc Stem Antifriction disk Gaskets Packing Handwheel Studs Nuts Componente Corpo 15-50 Corpo 65-250 Cavalletto Cavalletto Sede Otturatore Stelo Disco antifrizione Guarnizioni Baderna Volantino Prigionieri Dadi

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326 Streamlined flow valve outside screw traditional type-2

KV alla percentuale di alzata figura 326/R Kv at stroke rate item 326/R Condizioni di esercizio/ Working conditions Temperatura - Temperature [°C] -10/50 40 Pressione - Pressure [bar] E’ necessario l’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 DN Pressione - Pressure [bar] NOTA: Utilizzando una valvola con otturatore equilibrato è indispensabile installarla al contrario, cioè con la pressione sopra l’otturatore NOTE: Using a valve with balanced disc is...

Open the catalog to page 2