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Swing check valve

Model: H44H
Nominal diameter: 2"~50"
Operating temperature: -196℃~593℃
Operating pressure: 150-2500 CLASS
Material: A216 WCB,WCC;A217 WC6,etc.
Design standard: API 6D,API 594,BS 1868,ASME B16.34,GB 12236,GB 12224
Structural length: ASME B16.10
Connecting end: ASME B16.5,ASME B16.25,GB 9113,GB 12224
Test standard: API 598,ISO 5208,JB/T9092,GB/T 13927
Operation method: non-elevating hand wheel, bevel gear, motor drive unit, pneumatic drive unit
Application fields: For application in fields such as electric power industry, petroleum refining, petrochemical engineering, offshore oil, tap water engineering in urban construction, chemical engineering, etc.
Product features

1.The sealing faces of valve seat and valve clack are build-up welded with hard alloy to improve the erosion resistance and extend the service life of valve.

2.SS+ graphite or metallic seal or pressure self-sealing is adopted between valve body and bonnet for reliable sealing.

3.Suitable for medium backflow prevention in pipeline or device

4.Large check valves are designed with hydraulic damping cylinder to prevent the valve clack from bumping the valve seat, damaging the valve or causing pipeline vibration due to fast closing.

5.In case of pigging requirement, API 6D swing check valve can be manually operated to fix the opening position of valve clack, so as to achieve the pigging objective.