H41W|H41W-25T|H41W-40T氧气升降式止回阀氧气专用止回阀是在氧气管路上用来防止管路中的介质倒流的阀门，它在介质顺流时开启，介质逆流时自动关闭。一般使用在不允许介质朝反方向流动的管路中，以阻止逆流的介质损坏设备和机件。二、结构与特点1、选材考究，符合国内、外相关标准，材料的全面质量高。2、密封副配对先进合理，阀瓣、阀座密封面采用铁基合金或司太立（Stellite）钴基硬质合金堆焊面成，耐磨、耐高温、耐腐蚀、抗擦伤性能好，使用寿命长。3、产品按国家标准GB/T12235设计制造。4、可采用各种配管法兰标准及法兰密封型式，满足各种工程需要及用户要求。5、阀体材料品种齐全，垫片可根据实际工况或用户要求合理选配，能适用于各种压力、温度及介质工况。可按用户要求设计制造不同结构形式和连接形式的止回阀，为各种设备配套使用。三、应用规范设计制造按GB/T12235-89结构长度按GB/T12221-89法兰尺寸按JB/T79-94GB/T9113-2000检验标准按GB/T9092、GB/T13927-92四、压力试验公称压力1.62.54.06.410.016.0强度试验2.43.86.09.615.024.0水密封试验1.82.84.47.011.018.0气密封试验0.5-0.7五、主要零件材料及性能阀体、阀盖、阀板阀杆密封面垫片密封面工作温度℃适用介质WCBWCB1Cr13增强柔性石墨1Cr13/柔性石墨PTFE齿轮垫片13CrSTL本材料尼龙≤425水蒸汽油品WC6WC6≤540WC9WC9≤570ZGCr5MoZGCr5Mo≤550ZG1Cr18Ni9TiZG1Cr18Ni9TiZG1Cr18Ni9Ti≤200硝酸类ZG1Cr18Ni12Mo9TiZG1Cr18Ni12Mo9TiZG1Cr18Ni12Mo9Ti≤200醋酸类六、国标升降式止回阀规格主要尺寸和重量1.6MPaDNLDD1D2bn-ΦdHW(kg)凸面法兰RFH41HH41YH41W16C16P16R15130956545144-14582.0201501057555144-14632.7251601158565144-14713.53218013510078164-18845.44020014511085164-18966.550230160125100164-181159.165290180145120184-181451480310195160135208-1815625100350215180155208-1817040125400245210185228-1820156150480280240210248-23238902.5MPa15130956545164-14604凸面法兰RFH41HH41YH41W2525P25R201501057555164-14645251601158565164-146863218013510078184-187994020014511085184-18981250230160125100204-181101665290180145120228-181602480310195160135228-1817031100350230190160248-2319545125400270220188288-2522568150480300250210308-252551004.0MPaDNLDD1D2bn-dH重量凹凸法兰MFMH41HH41YH41W4040P40R40I15130956540164-141004201501057551164-141055251601158558164-1412063218013510066184-1813094020014511076184-18135125023016012588204-181491565290180145110228-181641880310195160121228-1816925100350230190150248-2319435125400270220176288-2522565150480300250204308-252551006.4MPa152101057540184-141007凹凸法兰MFMH41HH41YH41W6464P64R64I202301259051204-18110112523013510058224-18125133226015011066244-23152144026016512576244-23168205030017513588264-231702365340200160110288231883780380210170121308-2320546100430250200150328-2523068125500295240176368-3024593150550340280204388-3426512010.0MPa152101057540204-141007凹凸法兰MFMH41HH41YH41W100100P100R100I202301259051224-18110112523013510058244-18125133226015011066244-23140144026016512576264-23168255030019514588284-251702865340200170110328-251884280380230180121348-2520565100430265210150388-3023095125500310250176428-342451151505503502902044612-34265142)