进口高温止回阀
进口高温止回阀【进口高温止回阀】详细说明:高温高压止回阀整体采用锻造工艺,是高温、高压管路中防止介质倒流,如火电厂、***站,石油化工系统的高温、高压管路上。按锻钢高温高压止回阀可按以下三个工艺:1、螺栓式阀盖,按这种设计形式设计的阀门,其阀体与阀盖用螺栓螺母连接,缠绕式垫片(316夹柔性石墨制造)密封。客户有特殊要求时也可采用金属环连接。2、焊接式阀盖,按这种设计形式的阀门,其阀体与阀盖用螺纹连接,全焊密封。客户有特殊要求时也可采用全焊透连接。3、压力自紧式阀盖,按这种设计形式设计的阀门,其阀体与阀盖用螺纹连接,内压自密环密封。Hightemperatureandhighpressurecheckvalvesareforgedtopreventmediumbackflowinhightemperatureandhighpressurepipelines,suchasthermalpowerplants,nuclearpowerplantsandhightemperatureandhighpressurepipelinesinpetrochemicalsystems.Accordingtoforgedsteelhightemperatureandhighpressurecheckvalve,thefollowingthreeprocessescanbeadopted:1.Boltedbonnet.Valvesdesignedaccordingtothisdesignformareconnectedwiththebonnetbyboltsandnuts,andsealedbywindinggaskets(316clipsofflexiblegraphite).Metalringscanalsobeusedwhencustomersh***especialrequirements.2.Weldedbonnet.Accordingtothisdesign,thebodyofthevalveisthreadedtothebonnet,andthevalveisfullyweldedandsealed.Fullpenetrationcanalsobeusedwhencustomersh***especialrequirements.3.Pressureself-tighteningvalvecover.Thevalvedesignedaccordingtothisdesignformhasathreadedconnectionbetweenthebodyandthecover,andaninternalpressureself-tighteningringissealed.【进口高温止回阀】特点:1.阀门中腔采用压力自紧式密封结构,内腔压力越高密封性能越好。2.支管两端为对焊连接,适应不同的接管要求。3.阀门耐压部件选用优质耐热合金钢制造,高温性能好,承受压力高,耐用、安全、可靠。4.阀瓣、阀座的密封面采用司太立(stellite)钴基硬质合金堆焊而成,耐磨、耐高温,抗擦伤性能好、使用寿命长。5.阀瓣围绕阀座外的销轴旋转,减少关闭时发生猛烈冲击。6.内装式的销轴结构,减小外泄漏点,使用更可靠。【进口高温止回阀】特性:阀瓣上部和阀盖下部加工有导向套简,阀瓣导向简可在阀盏导向简内自由升降,当介质顺流时,阀瓣靠介质推力开启,当介质停流时,阀瓣靠自垂降落在阀座上,起阻止介质逆流作用)
上海庆精阀门有限公司
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