... : 1.0--2.5MPa or Class: 150--300lbs Material: Cast iron, cast steel, carbon steel, stainless steel. Technical standard: APT 6D ... : PN: 1.0--2.5MPa or Class: 150--300lbsMaterial: Cast iron, cast steel, carbon steel, stainless steel. Technical standard: APT 6D ... .10, ANSI B 16.5Applicable Medium: Oil, water, etc. Wafer swing check valve