◇ Overview and Features YYF hydraulic operated valves for water, oil, gas and other non-corrosive media, for cooling water systems, hydraulic operation of the valve from the fully open or fully closed for use. The valve consists of a piston, the piston-cylinder, sealing ring seat, housing and other components. Reasonable structure, easy maintenance. ◇ main technical parameters 1. Operating oil: 2.5Mpa, 4MPa, 6.3 MPa 2. medium pressure: 1.0,1.6,2.5,4.0,6.3MPa. 3. Nominal Diameter: 40,50,80,100,125,150,200,250,300mm. The medium temperature is less than 80 ℃; ambient temperature is 0.5 ~ 40 ℃. ◇ appearance and installation size models of media pressure D1 D2 nd HL YYF-40 1.0 / 1.6 / 2.5 110 145 4-18 310 200 YYF-50 1.0 / 1.6 / 2.5 125 160 4-18 315 230 YYF-80 1.0 160 195 4 -18 382 310 1.6 / 2.5 160 195 8-18 YYF-100 1.0 / 1.6 180 215 8-18 430 350 2.5 190 230 8-23 YYF-125 1.0 / 1.6 210 245 8-18 490 400 2.5 220 270 8-25 YYF-150 1.0 / 1.6 240 280 8-23 630 480 2.5 250 300 8-25 YYF-200 1.0 295 335 8-23 750 600 1.6 295 335 12-23 ◇ Model Description YYF- □ - □ / □ operating the hydraulic medium pressure Nominal diameter Type