Supply QZF-89 all-weather Fire breathing valve

QZF-89 all-weather Fire breathing valve performance and features:? All-weather Fire breathing ventilation valve is installed in a fixed roof tank, from reducing evaporation loss of oil control tank pressure and prevent incoming external flame effect. ? The valve has a ventilation volume, small amount of leakage, corrosion resistance and other characteristics, and a static ground wire, so that the valve and the tank to keep such potential. ? The valve has antifreeze properties, suitable for cold regions. First, the weather Fire breathing valve performance and features: QZF-89 all-weather Fire breathing ventilation valve is installed in a fixed roof tank, from reducing evaporation loss of oil control tank pressure and prevent the outside flame Afferents . The valve has a ventilation volume, small amount of leakage, corrosion resistance and other characteristics, and a static ground wire, so that the valve and the tank to keep such potential. The valve has antifreeze properties, suitable for cold regions. Second, all-weather Fire breathing valve main technical parameters: positive pressure 353Pa (36mmH2O), 980.7Pa (100mmH2O) negative 294.2Pa (36mmH2O) three all-weather Fire breathing valve parts material: Body material carbon steel WCB, stainless steel 304 316, aluminum positive pressure valve plate material stainless steel 304, aluminum vacuum valve plate material stainless steel 304, PTFE PTFE Ambient temperature ℃ -30 ~ 60 four, QZF-89 all-weather Fire breathing valve GB Act Lan connection Dimensions: GB, JB standard installation dimensions (mm) D1 DLH Nd DN50 110 140 362 360 4 × 14 DN80 170 185 513 445 4 × 18 DN100 170 205 513 445 4 × 16 DN150 225??????? ? 260 640 610 8 × 18 DN200? 280? 315 770 700 8 × 18 DN250? 335? 370 918 828 12 × 18 DN300? 395? 435 1050 910 12 × 23 five, QZF-89 all-weather Fire breathing valve American Standard flange dimensions: ANSI, API, ASME for JIS standard mounting dimensions (mm) D1 DLH Nd 2 "; 120.5 152 362 360 4 × 14 3"; 152.5 190 513 445 4 × 18 4 "; 190.5 229 513 445 4 × 16 6 "; 241.5 254 640 610 8 × 18 8"; 298.5 343 770 700 8 × 18 10 "; 362 406 918 828 12 × 18 12"; 483 432 1050 910 12 × 23