API 594 Dual Door Wafer Check Valves

Key Application(s)

• For application in fields such as the electric power industry, petroleum refining, petrochemical engineering, offshore oil, tap water engineering in urban construction, chemical engineering, and others.

Design Features

• Sizes from NPS 2” to 48” (DN50 to DN1200)
• CLASS 150 to 2500 （PN20～PN420）
• Operating temperature -29℃ to 593℃ (the range of service temperature may vary for different materials)
• The sealing faces of the valve seat and valve clack are built-up welded with hard alloy to improve the erosion resistance and extend the service life of the valve.
• Short closing travel of valve clack, and small impact at valve closing; short structural length, most suitable for positions with limited mounting space
• Suitable for medium backflow prevention in pipeline or device
• Built-in pin roll, without external leakage point
• Due to the loading of the spring, the valve clack can move flexibly without jamming and has a good sealing performance.