... gun,tip, suction hose Replacement Frequency Inlet valve—500hour, outlet valve—500hour, Agitation film—500hour, Tip—500 hour ... and competition.company & products profileFuzhou Hvban Mechanical Equipments Co.,Ltd engaged in researching, developing, producing and selling series ... , Plunger Rod, Agitation Film, Tungsten, Silicon, Inlet/Outlet Valve, Pressure Senor, Transformer, Link, Carbon Brush, SCR, Pump ...