美國APCO閥門系列產品：

美國APCO閘閥、美國APCO球閥、美國APCO蝶閥、美國APCO截止閥、美國APCO止回閥、美國APCO閥、美國APCO電磁閥、美國APCO過濾器、美國APCO減壓閥、美國APCO針型閥等
In 1957, VALVE AND PRIMER CORPORATION introduced it's first check valve line. Since then, there has been a steady introduction of distinctly different APCO Check Valves, Including:
SILENT CHECK VALVES-
圀愀昀攀爀 or Globe styles, pressures to 1500# cl, sizes to 42".
SLANTING DISC CHECK VALVES-
倀氀愀椀渀 or Hydraulically controlled, pressures to 2500# cl, size to 72".
SWING CHECK VALVES-
Air cushioned or Oil controlled, pressures to 300# cl, sizes to 66".
RUBBER FLAPPER SWING CHECK VALVES-
倀氀愀椀渀 or Rubber lined, rated 125# cl, sizes to 24".
AUTOMATIC CONTROL CHECK VALVES-
Manual or Motorized, pressures to 300# cl, sizes to 48".
DOUBLE DOOR CHECK VALVES-
In various styles and materials, pressures to 2500# cl, sizes to 72".