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Check valve 4s-3-4
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Description
Reverse valves are used in pipeline systems as uncontrolled, automatically acting protective devices, serving to prevent the reverse flow of the working medium in case of emergency. In working state check valve under the influence of the flow of the working medium is open. When in the absence of medium flow or in the event of flow in the opposite direction.
the valve is closed. It is allowed to install the valves with the cover upwards, only on horizontal pipeline sections in places convenient for maintenance. The valves may be installed with the cover upwards only on horizontal pipeline sections in places convenient for maintenance.
Connection to pipeline - under welding. Gate tightness: according to class D of GOST 9544-2015. Climatic design: U, T according to GOST 15150-69.
Placement category: 1, 2, 3 according to GOST 15150-69. Manufacturing and delivery according to TU 3740-001-86921904-2013. When ordering it is necessary to specify the name and designation of the product, climatic execution and placement category according to GOST 15150-69.
Manufacturing and delivery according to TU 3740-001-86921904-2013.
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