1. Valve design standard conform to:MSS SP-108, ANSI/AWWA C5172. Pipe connection conform to: ANSI/ASME B16.1, ANSI/AWWA C606, ANSI/AWWA C211/A21.113. Face to face conform to :MSS SP-108, ANSI/AWWA C5174. Test and inspection standard: MSS SP-108, ANSI/AWWA C517Body:Body casting is in ASTM A126 B or ASTM A536 65-45-12.Flange conforms to ANSI/ASME B16.1 CLASS125;Mechanical joint to ANSI/AWWA C111/A21.11;Grooved end meets ANSI/AWWA C606Body Sealing SurfaceA welded nickel alloy seat, corrosion resistance and high life span. Corrosion resistance epoxy seat is also available.Plug:       High integrity corrosion-free sealing is achieved by a abrasion resistant elastomers which protect the plug right up to the trunnion.Stem Seal        High integrity sealing by combining the advantages of  resilient and abrasion resistant. Self-adjusting sealing system is not affected by the change of  pressure, plug stem or external torque device.Limit Bolt      Adjust travel location of open and close, uniform the indicator on actuator with valve's opening angle.Torque: Rubber coated on plug sealing surface matches nickle alloy seat and plug stem locates in body and bonnet,this makes the relative position of upper and lower stem and sealing surface unchanged.it ensures continuous low torque operation.Flow:        The port design(round or rectangular on NPS3~NPS12,and rectangular on NPS and larger) with improved internal contours gives high capacity straight through flow in the full open position.Reducing turbulence and pressure drop. 

Eccentric plug valve