高压角式止回阀高压角式止回阀：PN16～45(160-450)H63HH63Y型高压角式止回阀H63F101高压角式止回阀外形及连接尺寸公称压力PN(MPa)公称通径DN(mm)尺寸(mm)L1DOD1162025852342329529544011036605012045736515558892580160721081002009013335452585234232952956401103664501204576651555889801607211410020090146高压角式止回阀)