EN12334 PN25 CAST IRON,SWING CHECK VALVES,BOLTED COVER,FLANGED ENDS.,END TO END:EN 558-1 Series4,END CONNECTION:EN 1092-2 PN25,WALL THICKNESS:MANUFACTURERS STANDARD,TEST STANDARD:MANUFACTURERS STANDARD
,Non-shock water-10~120℃/0.7MPa Air,water,oil-10~120℃/0.5MPa Gas-10℃~120℃/0.2MPa Steam~171℃/0.2MPa