835
835
The document details stainless steel ball valves with a full port design, available in sizes G 1/4 to G 2. The valves are constructed with a two-piece screwed design, featuring a blow-out proof stem and adjustable stem packing. The body and ball are made from stainless steel 1.4408, while the stem is stainless steel 1.4401. The ball seal and stem packing are made from PTFE. The handle is stainless steel with a green plastic cover.
Temperature and Pressure:
The working temperature range is from -20°C to a maximum of +180°C, depending on the working pressure. The valves are suitable for cold and hot water, and can handle water, oil, compressed air, fuels, solvents, steam, aggressive mediums, food, and beverages.
Standards and Approvals:
The valves are registered for drinking water use according to DIN EN 13828 and DVGW W 570. They feature a female thread according to ISO 228-1 and include a vent bore from DN25-DN50.
Usage and Maintenance:
The valves are suitable for use in drinking water installations with a pressure rating of PN10. It is noted that the gland nut must be adjusted at regular intervals.
Dimensions and Ordering:
The document provides detailed dimensions in millimeters for various sizes, along with a pressure-temperature diagram. An example of ordering is provided for a ball valve with female threads and a T-handle.
Catalog excerpts
Baureihe 840 835 Kugelhähne aus Edelstahl stainless steel ball valves mit vollem Durchgang full port design Stand: Februar 2009 - Technische Änderungen vorbehalten - subject to change (without notice) - 1.4.40.5 G 1/4 - G 2 Trinkwasser NW-6102BO0271 Gehäuse: Edelstahl 1.4408 Kugel: Edelstahl 1.4408 Kugeldichtung: PTFE Schaltwelle: Edelstahl 1.4401 Schaltwellendichtung: PTFE Griff: Edelstahl mit grüner Kunststoffummantelung Konstruktions-Merkmale • zweiteiliges Gehäuse, verschraubt • voller Durchgang • ausblassichere Schaltwelle • einstellbare Stopfbuchse • Innengewinde nach ISO 228-1 • Entlastungsbohrung von DN25-DN50 Material Temperaturbereich - 20° C bis max. + 180° C ( abhängig vom Betriebsdruck ) Kalt- und Warmwasser Verwendung Wasser, Öl, Druckluft, Kraftstoffe, Lösungsmittel,Dampf, aggressive Medien, Lebensmittel, Getränke Trinkwasserinstallation PN10 Bemerkung Stopfbuchsmutter muß in zeitlichen Abständen nachgezogen werden. Trinkwasserzulassung nach DIN EN 13828 und DVGW W 570 Design features • two - piece ball valve "screwed design" • full port design • blow out proof stem design • adjustable stem packing • female thread acc. to ISO 228-1 • vent bore from DN25-DN50 materials body: stainless steel 1.4408 ball: stainless steel 1.4408 ball seal: PTFE stem: stainless steel 1.4401 stem packing: PTFE handle: stainless steel with green plastic cover working temperature - 20° C to max. + 180° C ( depending on working pressure ) cold and hot water suitable for water, oil, compressed air, fuels, solvents, steam,aggressive mediums, food, beverages tube system for drinking water PN10 remark gland nut must be adjusted in intervals. drinking water registrated acc. to DIN EN 13828 and DVGW W 570 PED
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