低温阀门>>低温止回阀>>低温止回阀产品名称：低温止回阀产品型号：DH61Y、DH44Y产品口径：DN50-300产品压力：0.6~6.4Mpa产品材质：铸钢、不锈钢等产品概括：生产标准：国家标准GB、机械标准JB、化工标准HG、美标API、ANSI、德标DIN、日本JIS、JPI、英标BS生产阀体材质：铜、铸铁、铸钢、碳钢、WCB、WC6、WC9、20#、25#、锻钢、A105、F11、F22、不锈钢、304、304L、316、316L、铬钼钢、低温钢、钛合金钢等工作压力1.0Mpa-50.0Mpa工作温度：-196℃-650℃连接方式：内螺纹、外螺纹、法兰、焊接、对焊、承插焊、卡套、卡箍驱动方式：手动、气动、液动、电动 产品详细信息【低温止回阀用途】低温止回阀是指依靠介质本身流动而自动开、闭阀瓣，用来防止介质倒流的阀门，又称逆止阀、单向阀、逆流阀、和背压阀止回阀属于一种自动阀门，其主要作用是防止介质倒流、防止泵及驱动电动机反转，以及容器介质的泄放止回阀还可用于给其中的压力可能升至超过系统压的辅助系统提供补给的管路上止回阀主要可分为旋启式止回阀（依重心旋转）与升降式止回阀（沿轴线移动）。
低温止回阀主要外形和连接尺寸公称通径尺寸mminLDD1D2bfn-ΦdHDH44Y-150Lb502203152120.592161.64-19180803241192152.5127191.64-191901004297229190.5157241.68-192031255330254216186241.68-222291506356279241.5216261.68-222572008495342298.5270291.68-2229225010622406362324311.612-2535530012698483432381321.612-25396DH44Y-300Lb50226716512792231.68-19178803318210168.5127291.68-222161004356254200157321.68-222411255400279235186351.68-222671506444318270216371.612-223052008533381330270421.612-2536825010622445387324481.616-2939430012711521451381511.616-32445DH44Y-600Lb50229516512792336.48-19203803359210168127366.48-222351004435273216157456.48-252861255511330266.5186526.48-292921506562356292216556.412-293302008664419349270636.412-3238125010791510432324716.416-3545730012842559489381746.420-35584止回阀系列价格供用户或设计院工程项目做预算止回阀H41W-16P口径4Ni8Ni316普料DN15187.5225315DN20202.5262.5352.5142.5DN25225292.5412.5157.5DN32292.5375502.5217.5DN40367.5465637.5262.5DN50442.5585825322.5DN65622.5757.51125435DN1807809751432.5540DN1009601207.51762.5705DN1251597.519352857.51260DN1502100277540351642.5DN20039455377.56772.53105DN25074259600DN3001080014400止回阀H42W-16P止回阀H44W-16P口径4Ni8Ni316普料4Ni8Ni316普料DN15157.5307.5127.5255285367.5187.5DN20187.5248 337.5142.5255300367.5187.5DN25195278 367.5157.5270322.5420202.5DN32225323 457.5202.5337.5382.5525240DN40270405 540240390465652.5277.5DN50367.5473 637.5277.5457.5585825345DN65495623 892.5360630757.51095457.5DN180607.5758 1072.5457.5787.59751425555DN100757.5975 1312.55709601207.51845705DN1251312.51598 2152.59751507.521002857.51260DN1501597.52100 28201207.5235527753997.51650DN2002943698 4702.523553952.54702.567202940DN25058507425 960064508100DN30067509150 11775780010650型号H41HH44HH41HH41HH41HH41HH41HH41HH41H16C25C1BC25C16C25C40C64C100C普通（沙铸）中型（精铸）重型材质(15-200口径均为精铸）15120120120120127.5127.5127.519519520127.5127.5127.5127.5135135135240240250135135142.5142.5142.5142.5247.5247.532202.5202.5202.5202.5210217.5217.540540540255255255255285285285570570502852852852853153153156456756537537542042046546546576582580480480502.5502.560060060011251200100600645645682.5780825825142515001258559309009751125120012002025217515010801155117012451620169517252775292520018001950192020252475262527754725495025031503375352537204200697575003004800510052505550645011250120003507200780079508250870014250180004009450990001020045012000127505001950020250600型号H44H-16CH44H-25CH44H-40CH44H-16CH44H-25C普通型（沙铸）中型（精铸）15157.5157.5157.5157.5157.52016516516516516525172.5172.5172.5172.5172.532217.5217.5217.5217.5217.540247.5247.5247.5247.5247.55028528528528528565382.5382.539042042080480480495510510100600637.566063067512585590093090097515010801155117011701275200165017251875172518752502550270030003003600390046503505250600063004006750795045097501095050011250127506002175024000型号H44H-16CH44H-25CH44H-40CH44H-64CH44H-100C重型材质重型材质（15-200口径均。
