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AK/DVGW

Product catalog summary

Series and Type: The document discusses the AK/DVGW series 049 butterfly valves, which are suitable for various gases as per DVGW-Arbeitsblatt G 260, flammable gases according to EN 437, and other neutral gases. These valves can be manually, pneumatically, or electrically operated and are designed for safety shut-off applications in gas pipelines to burners, complying with EN 161 class A standards.

Applications: The valves are applicable for use in safety-related systems as a single safety-related subsystem according to DIN EN IEC 61508 and DIN EN IEC 61511, supporting up to SIL 3. They are suitable for all gaseous media and can be used as safety shut-off valves with a closing time of less than 1 second.

Characteristics: The valves feature a one-piece body with a tightly closing, centric disc, and a blow-out proof stem. They are designed to fit between flanges according to DIN EN 1092-1 form A, B, E – PN 10, with face-to-face dimensions according to DIN EN 558-1-R20. The actuator adaption follows DIN EN ISO 5211 standards, and the valves have a replaceable lining with a leak rate A according to DIN EN 12266-1. The maximum working pressure is 10 bar, reducing to 1.5 bar from DN 350.

Technical Specifications: The document provides detailed technical specifications for butterfly valves ranging from DN 50 to DN 400 with a pressure rating of PN 10. It includes dimensions, materials, and weights for each valve size. The body is made of ductile iron EN-JS 1049 with an epoxy resin coating, and the disc is fluoropolymer coated. The shaft is made of material 1.4021, and the lining is NBR-DVGW. The shaft sealing consists of an acetal resin with internal and external NBR-O-rings.

Materials and Construction: The valves are constructed with high-quality materials, including ductile iron for the body and disc, and acetal resin for the shaft sealing. The design ensures durability and reliability in various applications.

Additional Information: The document notes that technical data changes and developments are reserved, with the effective date being July 2016. Contact information for Herberholz is provided for further inquiries.

Catalog excerpts

ABSPERRKLAPPEN BUTTERFLY VALVES DN 50 – DN 400 • PN 10 AK/DVGW AK/DVGW-SSK BAUREIHE SERIES --Für alle Gase nach dem DVGW-Arbeitsblatt G 260, brennbare Gase nach EN 437 und andere neutrale Gase. --Kann als hand-, pneumatisch- oder elektrisch-betätigte Klappe eingesetzt werden. --Als Sicherheitsschnellschluss-Absperrklappe nach EN161 Klasse A (Schließzeit < 1s) für Gaszuleitungen zu Brennern oder Brennergruppen einsetzbar. --Geeignet zur Verwendung als einkanaliges Subsystem in sicherheitsgerichteten Systemen nach DIN EN IEC 61508, bzw. DIN EN IEC 61511, bis einschließlich SIL 3. --For all gaseous media acc. to DVGW-Arbeitsblatt G 260, flammable gas acc. to EN 437 and other neutral gas. --May be manually, pneumatically or electrically controlled. --May be used as Safety shut-off valve acc. to EN 161 class A for pipes to burner or multiple burners (closing time < 1s). --Suitable for use in safety related systems as a single safety related subsystem acc. to DIN EN IEC 61508 and DIN EN IEC 61511 for up to and including SIL3. --Einteiliges Gehäuse, dichtschließend, zentrische Klappenscheibe. --Mit ausblassicherer Welle. --Ausführung zum Einklemmen zwischen Flansche nach DIN EN 1092-1 Form A, B, E – PN 10. --Baulänge nach DIN EN 558-1-R20. --Anschlussflansch für Antriebe nach DIN EN ISO 5211. --Auswechselbare Manschette. --Leckrate A nach DIN EN 12266-1. --Max. zul. Betriebsdruck 10 bar, ab DN 350 ≤ 1,5 bar. --Prüfgrundlagen: DIN EN 13774, DIN EN 161-Ventilklasse A, Ventilgruppe 2 --One-piece body, tightly closing, centric disc. --Blow out proofed stem --Wafer type body for flanges acc. to DIN EN 1092-1 form A, B, E – PN 10. --Face to face dimensions acc. to DIN EN 558-1-R20. --Actuator adaption acc. to DIN EN ISO 5211 --With replaceable lining. --Leak rate A acc. to DIN EN 12266-1. --Max. working pressure 10 bar, from DN 350 ≤ 1,5 bar. --Basis of type examination: DIN EN 13774, DIN 3394-1-class A, DIN EN 161-class Valve class A, valve group 2

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HERBERHOLZ INDUSTRIE ARMATUREN TYP TYPE AK/DVGW AK/DVGW-SSK BAUREIHE SERIES TECHNISCHE DATEN TECHNICAL DATA TEIL NR. PART NO. Technische Weiterentwicklung und Anderung der Daten vorbehalten. Technical data changes and developments reserved. [email protected] - www.herberholz.com Stand Juli 2016. Effective July 2016.

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