4 Inch Class 600 Lubricated Plug Valve Class 600 Lubricated Plug Valve Class 600 WCB Check Valve API 6D WCB Lubricated Plug Valve 4 Inch Class 300 WCB Gate Valve 4 Inch Class 150 WCB Globe Valve 4 Inch Class 900 WCB Globe Valve Lubricated Plug Valve 4 Inch WCB Gate Valve 4 Inch Class 1500 WCB Pressure Seal Globe Valve