Supply Of Directional Control Valve To Model No.f3 Directional Control Valve To Model No.f3-dg4v5-2c-mu-a6 20 Of M/s Vickers Or Model No.4we10e 33/cw110n9k4 Of M/s Rexroth Only For Hydraulic Power Pack Of Electric Arc Furnace No.1&2 Slew In/out.the Valve Seals Shall Be Of Viton Material Only..