API 6D Expanding Gate Valves

Key Application(s)

• Pipeline/Transmission lines
• Tank farms
• Custody transfer
• Any application that reliable positive shut-off is required

Design Features

• Sizes from NPS 2” to 30”(DN50 to DN750)
• CLASS 150 to 2500 (PN20 to PN420)
• Operating temperature -196℃ to 593℃(the range of service temperature may vary for different materials)
• The sealing faces of the valve seat and valve face are hard-faced to improve the erosion resistance and extend the service life of the valve
• SS+graphite (spiral-wound) or metallic seal (RTJ) or pressure seal bonnet is used to provide a reliable bonnet seal
• Rising stem position for visual indication of disc position
• The valve stem thread is isolated from the pipeline media to reduce corrosion
• The expanding gate design reacts to thermal cycling while maintaining a seal.
• High CV due to full port design
• Optional Class A sealing testing available to meet the fugitive emission standard ISO 15848 FE