9800000161 DN200 PN10-40 999-ZRK ZRK 1-S ZRK1, Valve 999-ZRD/API hart ZRD 3 999-3.1.B VK 999-PK VK ZRD 1 9800064952 alternative 9800069245 SR 30.40 DN 50 9800001644 SR 30.40 DN 50 PN 6 - 40 "DN 50 "DN 100 9800000153, ZRK 1 DN50 PN10-40;Zwischenflansch-Rückschlagklappe 9800000156, ZRK 1 DN100 PN10-40;Zwischenflansch-Rückschlagklappe P/N: 9800000101 Type: SR 34.40 ZRK 1 DN200 PN10-40