Vertical Check Valve H42W overview of this entry is missing, the card maps, add relevant content to make entry more complete, but also the rapid escalation, hurry to edit it! Chinese name H42W vertical model H42W check valve type Overview This series valve normally is closed H42W-16P 1.6 1 Overview H42W vertical check valve, the pressure of the pipeline due to the inlet end of the media, and to overcome the resistance of the spring to make valve open. When the pressure is lower than the inlet end of the media outlet end of the spring to the seat leaving the spool valve closes to prevent backflow media, so starting and ending back role. As a result of this spring support spool valve, so the use of vertical or horizontal installation can be installed. 2 Main Performance Specifications Model Nominal pressure PN (MPa) strength test (MPa) seal test (MPa) Temperature (℃) Applicable medium Shell Seal H42W-16P 1.6 2.4 1.76 ≤200 nitric acid H42W-25R 2.5 3.75 2.75 ≤200 Corrosion media H42W-40P 4.0 6.0 4.4 water, oil corrosive media H42W-40R H42Y-40 main installation dimensions and weight GB 1.6MPa DN 15 20 25 32 40 50 65 80 100 125 150 200 L 80 90 105 110 120 140 160 185 210 275 300 380 D 95 105 115 135 145 160 180 200 215 245 280 335 Wt - - - - - 7.5 9.5 11 19.5 36.5 48 65 GB 2.5MPa DN 15 20 25 32 40 50 65 80 100 125 150 200 L 80 90 105 110 120 140 160 185 210 275 300 380 D 95 105 115 135 145 160 180 195 230 270 300 360 Wt 7.5 9.5 12 20 38 49 70 GB 4.0MPa DN 15 20 25 32 40 50 65 80 100 125 150 200 L 80 90 105 110 120 140 160 185 210 275 300 380 D 95 105 115 135 145 160 180 195 230 270 300 375 Wt 7.5 9.5 12 20 38 49 72