Data sheet RK

Data sheet RK

Data sheet RK

Product catalog summary
Specifications
  • Design: Wafer-type swing check valves for preventing return flow in piping systems, designed for installation between DIN flanges.
  • Connection: Flange sizes range from DN32 to DN500, designed for PN16 flanges.
  • Pressure Range: DN32 to DN250 can handle up to 16 bar, while DN300 to DN500 can handle up to 10 bar.
  • Temperature Range: EPDM up to 120°C, FKM up to 150°C, PTFE up to 200°C.
  • Materials: Body and disc available in carbon steel (zinc-plated) or stainless steel 1.4408. O-rings available in EPDM, FKM, or PTFE. Springs are made of stainless steel 1.4571 and are optional.
Installation Guidelines
  • Ensure correct flow direction during installation.
  • Prefer horizontal pipeline installation.
  • Maintain a straight pipeline of at least 5 times the nominal diameter before and after the valve.
  • Do not install directly onto a pump flange.
Ordering Information
  • Product codes are structured to indicate sealing type, material, and connection size.
  • Example: RK334007 indicates a stainless steel wafer-type swing check valve with EPDM sealing for flange DN 50.
Pressure Loss and Dimensions
  • Pressure loss values are provided for water at 20°C.
  • Dimensions and weights are specified for each DN size, along with recommended flange screw torques.
Additional Options
  • Springs are optional and must be ordered separately.
Performance
  • Opening pressures are specified for various DN sizes, with and without springs.
  • A minimum back pressure of 0.3 bar is required to ensure valve tightness.
See more

Catalog excerpts

Data sheet RK-1

BAUFORM Rückschlagklappen zur Rückussverhinderung in Rohrleitungssystemen für den Einbau zwischen DIN Flanschen. DESIGN Swing check valves for return ow prevention in piping systems to be mounted directly between anges acc. to DIN. ANSCHLUß Flansch DN32 … DN500 bemessen für Flansch nach PN16 CONNECTION Flange DN32 … DN500 dimension for ange acc. to PN16 MEDIUMTEMPERATUR EPDM bis max. +120°C FKM bis max. +150°C PTFE bis max. +200°C TEMPERATURE RANGE EPDM up to max. +120°C FKM up to max. +150°C PTFE up to max. +200°C WERKSTOFFE Gehäuse: Stahl, verzinkt Edelstahl 1.4408 Scheibe: Stahl, verzinkt Edelstahl 1.4408 O-Ring: EPDM FKM PTFE Feder: Edelstahl 1.4571 (Feder nur auf Anfrage) MATERIALS Body: Carbon steel, zinc-plated Stainless steel 1.4408 Disk: Carbon steel, zinc-plated Stainless steel 1.4408 O-ring: EPDM FKM PTFE Spring: Stainless steel 1.4571 (spring only on request) ZUSATZAUSSTATTUNGEN Federbelastete Klappe auf Anfrage. OPTIONS Disc with spring on request. EINBAULAGE Die Durchussrichtung ist zu beachten. Der Einbau in eine waagerecht verlaufende Rohrleitung ist zu bevorzugen. Vor und hinter der Rückschlagklappe muss eine gerade Rohrstrecke von min. 5x dem Nenndurchmesser vorgesehen werden. Die direkte Montage auf einen Pumpenansch ist nicht zulässig. INSTALLATION Pay attention to the ow direction. Preferably mounting into a horizontal running pipeline. Make sure to install a minimum of 5 x nominal diameter of straight pipeline in front of and behind the dual plate check valve. Do not install the valves directly onto a pump ange. Alle Angaben sind freibleibend und unverbindlich! Dok.-Nr.: KAT-RK-klappe - 1/5 21.02.2013 - Änderung: DN500 hinzugefügt Technische Daten The above information is intended for guidance only and the company reserves the right to change any data herein without prior notice! Artikel: RK Zwischenansch Rückschlagklappe PN 16 / PN 10 Stahl Edelstahl Type: RK Wafer-type Swing check valve PN 16 / PN 10 Carbon steel Stainless steel Art. RK - Seite 1/5 END-Armaturen GmbH & Co. KG Postfach (PLZ 32503) 100 341 · Oberbecksener Str. 78 · D-32547 Bad Oeynhausen · Telefon (05731) 7900-0 · Telefax (05731) 7900-199 · http://www.end.de

 Open the catalog to page 1
Data sheet RK-2

Artikel- u. Bestellangaben: z.B. RK334007 = Zwischenansch-Rückschlagklappe, Edelstahl, EPDM-Dichtung, Edelstahl-Scheibe, für Flansch DN 50 1.+ 2. Stelle Produkt RK = ZwischenanschRückschlagklappe 3.+ 4. Stelle Werkstoffe Gehäuse / Scheibe 33 = Edelstahl / Edelstahl 45 = Stahl verzinkt / Stahl verzinkt 5. Stelle Dichtung 1 = PTFE 3 = FKM 4 = EPDM Ordering example: e.G. RK334007 = Wafer-type Swing check valve, stainless steel, EPDM-sealing, stainless steel disc, for ange DN 50 1.+ 2. Digit Product RK = Wafer-type Swing check valve 3.+ 4. Digit Material Body / Disc 33 = Stainless steel / Stainless...

 Open the catalog to page 2
Data sheet RK-3

Abmessungen / Dimension Dok.-Nr.: KAT-RK-klappe - 3/5 21.02.2013 - Änderung: DN500 hinzugefügt Anziehmoment der Flanschschrauben / Flange screw torques Gewinde / Thread Anziehmoment / torque [Nm] Art. RK - Seite 3/5 END-Armaturen GmbH & Co. KG Postfach (PLZ 32503) 100 341 · Oberbecksener Str. 78 · D-32547 Bad Oeynhausen · Telefon (05731) 7900-0 · Telefax (05731) 7900-199 · http://www.end.de

 Open the catalog to page 3
Data sheet RK-4

Stückliste * / Parts list * * : Die in den Zeichnungen dargestellten Feder sind eine Zusatzausstattung, die extra bestellt werden muss. * : The springs shown in the drawings are options, which have to been ordered in addition to the ap. Art. RK - Seite 4/5 END-Armaturen GmbH & Co. KG Postfach (PLZ 32503) 100 341 · Oberbecksener Str. 78 · D-32547 Bad Oeynhausen · Telefon (05731) 7900-0 · Telefax (05731) 7900-199 · http://www.end.de Dok.-Nr.: KAT-RK-klappe - 4/5 21.02.2013 - Änderung: DN500 hinzugefügt

 Open the catalog to page 4
Data sheet RK-5

Stahl, verzinkt Edelstahl 1.4408 steel, zinc-plated stainless steel 1.4408 Stahl, verzinkt Edelstahl 1.4408 steel, zinc-plated stainless steel 1.4408 Ring screw Feder (Option) Spring (Option) Haltebolzen (Option) Name plate Stift für Feder (Option) Feder rechts (Option) Spring right (Option) Feder links (Option) Spring left (Option) Öffnungsdruck / Opening pressure DN Kv-Wert Kv-value Öffnungsdruck [mbar] bei Durchussrichtung opening pressure [mbar] at ow direction mit Feder with spring ↑ ohne Feder without spring ohne Feder without spring mit Feder with spring Dok.-Nr.: KAT-RK-klappe - 5/5 21.02.2013...

 Open the catalog to page 5

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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.