... 9234-2008 Combined valves,conical valve.plate valve. Low pressure accumulator,high pressure damper. Hot water, Assembly type: horizontal or ... 35CrMo, 4140,1045,QT800)Nitrogen hardening treatment is applied to attain strong strength, high hardness, durable and corrosion ... specification can be provided to the users. high pressure steam boiler feed water pump,high pressure boiler feed water pump