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72700 Check Valve

72700 Check Valve

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Check Valve

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A check valve, or non return valve, is a valve that prevents the fluid from flowing backwards and ensures that it flows in only one direction. It can be used to prevent the loss of prime of the pump and water hammer.

It is used in the food-processing, cosmetics, pharmaceutical and chemical industries as well as in the beverage, wine and oil production.

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72700 Check Valve

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Operating principle

The check valve opens when the pressure of the fluid exceeds the pressure exerted by the spring. When the two pressures are compensated, the valve closes. A higher counterpressure will ensure the valve closes.

When there are two pumps operating alternately, the check valves are installed at the outlet of each pump to prevent the backflow when the pump is stopped. The obturation disc is provided with a perforation for a minimal circulation flow to avoid water stagnancy.

Design and features

Available sizes: DN 25/1" to 100/4".
Easy assembly/disassembly with the clamp.
Reduced size design.
Connections: Male DIN 11851.

Materials

Parts in contact with the product: AISI 316L (1.4404)
Other stainless steel parts: AISI 304 (1.4301)
Spring: AISI 302 (1.4319)
Gasket: EPDM according to FDA 177.2600
Internal surface finish: Ra ≤ 0,8 μm
External surface finish: Machined (turned)

Options

Gaskets: NBR, FPM or PTFE.
Connections: Weld DIN 11850, Weld OD ASME BPE, Clamp DN 32676, Clamp OD ASME BPE, Clamp, SMS, RJT, FIL-IDF, etc.
Perforation in the obturation disc.
ATEX version available.

Documents

Operating principle

The check valve opens when the pressure of the fluid exceeds the pressure exerted by the spring. When the two pressures are compensated, the valve closes. A higher counterpressure will ensure the valve closes.

When there are two pumps operating alternately, the check valves are installed at the outlet of each pump to prevent the backflow when the pump is stopped. The obturation disc is provided with a perforation for a minimal circulation flow to avoid water stagnancy.

Materials and Options

Parts in contact with the product: AISI 316L (1.4404)
Other stainless steel parts: AISI 304 (1.4301)
Spring: AISI 302 (1.4319)
Gasket: EPDM according to FDA 177.2600
Internal surface finish: Ra ≤ 0,8 μm
External surface finish: Machined (turned)

Gaskets: NBR, FPM or PTFE.
Connections: Weld DIN 11850, Weld OD ASME BPE, Clamp DN 32676, Clamp OD ASME BPE, Clamp, SMS, RJT, FIL-IDF, etc.
Perforation in the obturation disc.
ATEX version available.

Document № FT.72700.2_ES
Title Válvula de Retención 72700
File type .pdf
Summary La válvula de retención es una válvula para evitar el retorno del fluido y asegurar que sólo fluya en una dirección.
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Document № FT.72700.2_EN
Title Check Valve 72700
File type .pdf
Summary A check valve, or non return valve, is a valve that prevents the fluid from flowing backwards and ensures that it flows in only one direction.
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Document № FT.72700.2_FR
Title Clapet Anti-retour 72700
File type .pdf
Summary Le clapet anti-retour est conçu pour éviter le retour du fluide et bloquer le débit dans une seule direction.
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Document № FT.72700.2_IT
Title Valvola di Ritegno 72700
File type .pdf
Summary La valvola di ritegno è una valvola per evitare il ritorno del fluido e assicurare che vada solo in una direzione.
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Document № FT.72700.2_DE
Title Rückschlagventil 72700
File type .pdf
Summary Ein Rückschlagventil verhindert einen Rückfluss und stellt somit sicher, dass nur in eine Richtung durchflossen wird.
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Document № FT.72700.2_DA
Title Kontraventil 72700
File type .pdf
Summary Kontraventilen sikrer at væsken ikke løber tilbage i rørsystemet, samt sørger for at væsken kun kan løbe i en retning.
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Document № FT.72700.2_RU
Title Обратный Клапан 72700
File type .pdf
Summary Обратный клапан - это разновидность самосрабатывающих предохранительных устройств, предназначенных для предотвращения обратного потока рабочей среды в трубопроводе.
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Document № FT.72700.2_CN
Title 止回阀 72700
File type .pdf
Summary 止回阀能防止液体倒流,确保液体只向一个方向流动。止回阀能用来预防液体倒流 造成对泵的损坏和水锤。 止回阀应用于食品加工,化妆品,生物制药和精细化工等行业,也在饮料、啤酒和 油脂的生产流程中使用.
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Document № 10.501.30.00ES_RevB
Title INSTRUCCIONES DE INSTALACIÓN, SERVICIO Y MANTENIMIENTO VÁLVULA DE RETENCIÓN
File type .pdf
Summary Este manual de instrucciones contiene aquellas indicaciones básicas que se deberán cumplir durante la instalación, puesta en marcha y mantenimiento.
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Document № 10.501.30.00EN_RevB
Title INSTALLATION, SERVICE AND MAINTENANCE INSTRUCTIONS CHECK VALVE
File type .pdf
Summary This instruction manual contains basic indications which should be fulfilled during the installation, starting and maintenance.
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Document № 10.501.30.00FR_RevB
Title INSTRUCTIONS D’INSTALLATION, DE SERVICE ET D’ENTRETIEN CLAPET ANTI-RETOUR
File type .pdf
Summary Ce manuel d’instructions contient les indications de base à appliquer pendant l’installation, la mise en service et l’entretien.
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Document № 10.501.30.00IT_RevB
Title ISTRUZIONI D’INSTALLAZIONE, USO E MANUTENZIONE VALVOLA DI RITEGNO
File type .pdf
Summary Questo manuale di istruzioni contiene quelle indicazioni esenziali che si devono compiere durante l’installazione, avviamento e manutenzione.
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Document № 10.501.30.00DE_RevB
Title INSTALLATIONSANLEITUNG, SERVICE UND INSTANDHALTUNG RÜCKSCHLAGVENTIL
File type .pdf
Summary Diese Betriebsanleitung enthält die grundlegenden Anweisungen, die bei der Installation, Inbetriebnahme und Instandhaltung zu beachten sind.
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Document № 10.501.30.00PT_RevB
Title INSTRUÇÕES DE INSTALAÇÃO, SERVIÇO E MANUTENÇÃO VÁLVULA DE RETENÇÃO
File type .pdf
Summary Este manual de instruções contém as indicações básicas que deverão ser cumpridas durante a instalação, colocação em funcionamento e manutenção.
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Document № V.V72 ES-EN-FR_0315
Title Válvula de Retención, Check Valve, Clapet Anti-Retour
File type .pdf
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