Home Company Safety & Sustainability Products Engineering Certifications Contact & After Sales Double Ball One, two or three-pieces body design. Floating or trunnion design available. Bolted or fully welded body. Full or reduced bore. All forged materials available. Double Ball Valves are basically made up of two ball valves in one solid body. They provide two physical barriers against downstream leakages with a very compact pattern. A center bleed port between the balls allows testing of valve’s performance and provides a “double block and bleed” feature with maximum safety. The double block and bleed design makes it possible to reduce the pressure to zero in the body cavity, while the line is in pressure and the balls are in closed position. This procedure is possible also while the balls are in opened position if the valve is without equalization hole (Fully Double Block and Bleed). This is suitable to: Verify integrity of both seats Allow draining and/or flushing of the valve body cavity Guarantee prevention of downstream leakage to assure safety of downstream activities Application Reduced space, double block Valve design Side entry Trim design Floating or trunnion Sizes From ½” to 36” (superior sizes can be designed upon request) Pressure range Class from 150 up to API 6A 15.000 Materials grade Carbon steel, stainless steel, duplex, super duplex, incoloy, exotic material, bronze, titanium. Conforming to the latest MR 01-75 and MR 01-03. CRA weld overlays for aggressive fluids. Materials status Forged close to final shape Seats Soft or metal seated Seals O-rings, lip seals, pressure energized or mechanically loaded stem packings Design To ASME VIII or ASME B16.34 Operator Lever, gear operated, actuated Previous Next Follow us on Technical solution provider since 1962 Contact Info Viale A. Colombo, 219 21055 Gorla Minore (VA) +39 0331 602059 info@dellafoglia.it Links Company Safety & Sustainability Products Engineering Certifications Contact & After Sales © 2021 Della Foglia S.r.l. All rights reserved - Cod. Fisc. - P.IVA: 01562490126 Privacy Policy Cookie Policy Credits × Informativa Questo sito o gli strumenti terzi da questo utilizzati si avvalgono di cookie necessari al funzionamento ed utili alle finalità illustrate nella cookie policy. Se vuoi saperne di più o negare il consenso a tutti o ad alcuni cookie, consulta la cookie policy. Chiudendo questo banner, scorrendo questa pagina, cliccando su un link o proseguendo la navigazione in altra maniera, acconsenti all’uso dei cookie.