relief valve

• Purpose : to test operation of pressure differential relief valve
  目的：检测差压安全阀的工作性能。
• Disconnect the hose from the bottom cover plate to the relief valve
  断开底部盖板到安全阀上的软管。
• Type y3 - h * * j relief valve act as safety valve in hydaulic system
  型溢流阀宜做为液压系统安全阀使用
• Hydraulic fluid power - unloading relief valve
  液压卸荷溢流阀
• Place the screw back into the relief valve disc and tighten
  将螺丝放回到安全阀阀瓣内，并加以紧固。
• The check valve and relief valve seats shall be push - in type
  这种止回阀和安全阀阀座应该是推入式的。
• There must be no valve between the relief valve and heater
  在安全阀和热水器之间不能够安装任何阀门。
• Do not place any valve between the relief valve and the tank
  不要在安全阀和热水器之间安装任何阀门。
• Record this as the opening differential pressure of the relief valve
  将此读数记录为安全阀开启压差。
• Secondary air injection relief valve
  二次空气喷射减速压阀