Cast Iron Ball Check Valve 1.Size:1-1/2"to 64" or ... 64" or larger 2) Class: PN10, PN16.125LB, 150LBSpecificationsCast Iron Flange Ball Check Valve1) Size: 1-1/2"to 64" or larger ... 2) Class: PN10, PN16.125LB, 150LB 3) Type: Cast iron ball valve, butterfly valve, gate valve, globe valve, swing check valve ...