China plug valve manufacturers, plug valve suppliers, plug valve factory. The ZGV Eccentric Plug Valves are with a welded nickel seat for corrosion and erosion resistance specially profiled low torque and extended seat life. The Plug rotates in permantly lubricated 316 grade stainless steel bearing located in body and bonnet, along with upper and lower PTFE thrust washers, which ensures consistently low operating torque. The port Design (round on 2-1/2" through 12" and rectangular on 14" and larger) with streamlined internal contours give high capacity straight through flow in the full open position, reducing turbulence and pressure drop and the effect of erosive medium. handling of sludges and slurries is the therefore enhanced.
ZGV quarter-turn valves are equipped with a position indicator marked at 10 degree increments and an open position memory stop that can be used for balancing applications. Valves 3" through 8" are available with lever actuators. Geared actuators are recommended on 6" and larger valves. It is also recommended that valves installed in pipelines with high velocity or where water hammer conditions can be caused by sudden valve shut-off that geared actuators be installed. Lever actuators can only be used for pressure ratings of 100 psi maximum and 25 psi in the reverse flow condition. ZGV Eccentric Plug valves are available in sizes ranging from 3" - 24".
THE ZGV CAST IRON PLUG VALVES DESIGNING FEATURES
» Cast or Ductile Iron Body, Disc and Gland
» W.T to AWWA C504-00 Table 2
» Flanged Ends to ANSI B16.1 Class 125 or 250
» Grooved Ends to ANSI AWWA C-606 for D.I or Steel pipes
» Machnical Joints in Accordance with AWWA C111 (ANSI 21.11)
» Plug is round up to 12" and retangular for size 14" and larger
» All valves are in accordance with MSSR-SR-108
» Optional Direct Mounting Pad to ISO 5208
» Fusion Bonded Epoxy Coating Int & Ext.
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