(DIN, GB) lift Rückschlagventil

DIN standard check valve is apply to various kinds of working conditions pipeline such as petroleum,water and steamindustry etc.under normal pressure in the PN1.6-4.0Mpa and operating temperature at -20--350 degree. 1.This product has logical structure,reliable double seal,excellent performance and nice design. 2.Sealing face is overlayed by STL and stem heat-treatment and surface nitriding-treatment to sure functions offriction-resistanced,corrosion-resistanced to ensure a long time use life. 3.The parts material,flange and butt welding dimension may selected according to current operating condition or users' requirement to meeting the requirements of various engineering.