H44W swing check valve of the lack of an overview of entry, card maps, add relevant content to make entry more complete, but also the rapid escalation, hurry to edit it! Chinese name H44H / W swing check valve standard GB12236 structure built-in structural applications in petroleum, chemical, pharmaceutical and a swing check valve details H44H / W swing check valve design and manufacturing standards in strict accordance with GB12236, pin the valve shaft and connected by a built-in structure, excellent performance, more reliable seal. Products are widely used in pipeline in petroleum, chemical, pharmaceutical, power industry, and other conditions. 2 swing check valve main performance specifications Nominal test pressure (MPa) 1.6 2.5 4.0 6.4 10.0 2.4 3.8 6.0 9.6 Shell test Seal test 1.8 2.8 4.4 15.0 7.1 11.0 body material WCB (C) CF8 (P) CF 8M (R) WC6 WC9 operating temperature ≤ 425 ≤ 100 ≤ 100 ≤ 550 ≤ 550 For medium water, steam, oil, nitric acid and acetic acid type water, steam water, steam swing check valve 3 to perform design and manufacturing standards: GB12236 Structure length : GB12221 connecting flange: JB / T79-1994 test and inspection: JB / T9092-1999 four, swing check valve main connection size Nominal diameter PN1.6 / 2.5MPa PN4.0MPa PN6.4 / 10.0MPa LHLHLH Series 1 Series 2 Series 1 Series 2 DN40 200 200 130 200 200 130 260 160 DN50 230 230 135 230 230 135 300 170 DN65 290 290 145 290 290 145 340 180 DN80 310 310 175 310 310 175 380 245 DN100 350 350 200 350 350 200 430 290 DN125 400 400 255 400 400 255 500 320 DN150 480 480 320 480 480 320 550 360 DN200 495 550 380 533 550 380 650 430 DN250 622 650 440 622 650 440 775 505 DN300 698 750 480 711 750 520 900 555 DN350 787 850 530 838 850 540 1025 595 DN400 864 950 560 864 950 590 1150 680 DN450 978 1050 620 978 1050 650 1275 780 DN500 978 1150 655 978 1150 720 1400 970 [1]