大口徑旋啟式止回閥產品概述
H44H(Y)、H64H(Y)止回閥的功能是控制管道內介質單向流向的閥門，用來防止管路中的介質倒流。止回閥屬于自動閥類，啟閉件靠流動介質的力量自行開啟或關閉。止回閥只用于介質單向流動的管路上，阻止介質回流，以防發生事故。主要用于石油、化工、制藥、化肥、電力等管路上。
大口徑旋啟式止回閥特點及優點
●產品的設計制造符合美國國家標準ANSI B16.34，美國石油學會標準API6D要求
●閥門承壓件采用精密鑄造工藝澆鑄，表面質量美觀，無粘沙、冷隔等表面缺陷；內在質量穩定，無疏松、砂眼、裂紋等內在缺陷。
●旋啟式止回閥采用內裝搖臂旋啟式結構，閥門的所有啟閉件都裝于閥體內部，不穿透閥體，除了中法蘭部位用密封墊片或密封環密封外，整體沒有外漏點，杜絕了閥門外泄的可能。
●旋啟式止因閥搖臂和閥瓣連接處采用球面連接的結構，使得閥瓣在360℃范圍內有一定的自由度，有適當的微量位置補償。
●旋啟式止回閥密封副的密封面堆焊合金鋼(13Cr)或硬質合金Slite6,即使用在有細顆粒的介質中并不會因沖蝕而很快磨損。
H44W    H44H(Y)、H64H(Y)國標止回閥設計與制造標準：
●設計與制造：　GB/T12236
●法蘭尺寸：　JB/T79、GB/T9113
●壓力溫度：ASME B16.34、GB/T9131
●結構長度：　GB/T12221、ASME/ANSI B16.10
●對焊連接尺寸：ASME B16.25、GB/T12224
●檢驗與試驗：　JB/T9092、GB/T13927
主要材料明細表

注:客戶需求的其他材質也可采用.密封面材料配對客戶內件代號決定
 
H44H(Y)、H64H(Y)主要安裝尺寸及重量

http://www.zk-v.com/CV3000tiaojiefa/                    CV3000調節閥

http://www.zk-v.com/CV3000qidongtiaojiefa/        CV3000氣動調節閥

http://www.zk-v.com/cv3000diandongtiaojiefa/      CV3000電動調節閥

http://www.zk-v.com/diandongtiaojiefa/      電動調節閥

http://www.zk-v.com/dddztjf/           電動單座調節閥

http://www.zk-v.com/ddtttjf/           電動套筒調節閥

http://www.zk-v.com/ddsttjf/               電動三通調節閥

http://www.zk-v.com/ddcftjf/               電動襯氟調節閥

http://www.zk-v.com/ddwktjf/               電動溫控調節閥

http://www.zk-v.com/ddettjf/               電動二通調節閥

http://www.zk-v.com/ddgytjf/               電動高壓調節閥     

http://www.zk-v.com/qidongtiaojiefa/       氣動調節閥

http://www.zk-v.com/qdjxxtjf/              氣動精小型調節閥  

http://www.zk-v.com/qdcftjf/               氣動襯氟調節閥

http://www.zk-v.com/qddztjf/           氣動單座調節閥

http://www.zk-v.com/qdtttjf/               氣動套筒調節閥

http://www.zk-v.com/qdgytjf/               氣動高壓調節閥

http://www.zk-v.com/qdsttjf/               氣動三通調節閥

http://www.zk-v.com/qdettjf/               氣動二通調節閥

http://www.zk-v.com/tezhongtiaojiefa/    特種調節閥

http://www.zk-v.com/zilishitiaojiefa/    自力式調節閥

http://www.zk-v.com/qdVxtjf/             氣動V型調節閥

http://www.zk-v.com/qdoxtjf/             氣動O型調節閥

http://www.zk-v.com/ddtftjf/             電動通風調節閥

http://www.zk-v.com/yqzytjf/             氧氣調節閥

http://www.zk-v.com/qdtftjf/             氣動通風調節閥

http://www.zk-v.com/zlswdtjf/            自力式溫度調節閥

http://www.zk-v.com/diandongfamen/       電動閥門

http://www.zk-v.com/diandongqiufa/       電動球閥

http://www.zk-v.com/diandongdiefa/       電動蝶閥

http://www.zk-v.com/diandongjiezhifa/    電動截止閥

http://www.zk-v.com/diandongzhafa/       電動閘閥

http://www.zk-v.com/diandongdaozhafa/    電動刀閘閥

http://www.zk-v.com/ddgyzf/              電動高壓閘閥

http://www.zk-v.com/ddsfzf/              電動水封閘閥

http://www.zk-v.com/ddzkzf/              電動真空閘閥

http://www.zk-v.com/dddkjdf/             電動大口徑蝶閥

http://www.zk-v.com/ddgwdf/              電動高溫蝶閥

http://www.zk-v.com/ddtcf/               電動陶瓷球閥

http://www.zk-v.com/ddtcpz/              電動陶瓷排渣閥

http://www.zk-v.com/qidongfamen/         氣動閥門

http://www.zk-v.com/qidongqiufa/         氣動球閥

http://www.zk-v.com/qidongdiefa/       氣動蝶閥   

http://www.zk-v.com/qidongzhafa/         氣動閘閥

http://www.zk-v.com/qidongjiezhifa/      氣動截止閥

http://www.zk-v.com/qidongdaozhafa/      氣動刀閘閥

http://www.zk-v.com/qdtcqf/              氣動陶瓷球閥

http://www.zk-v.com/qdtcjlf/             氣動陶瓷進料閥

http://www.zk-v.com/qdtcclf/             氣動陶瓷出料閥

http://www.zk-v.com/taocifa/             陶瓷閥

http://www.zk-v.com/taocizhafa/          陶瓷閘閥

http://www.zk-v.com/taociqiufa/          陶瓷球閥

http://www.zk-v.com/taocizhihuifa/       陶瓷止回閥

http://www.zk-v.com/taocidiefa/          陶瓷蝶閥

http://www.zk-v.com/taocidaozhafa/       陶瓷刀閘閥

http://www.zk-v.com/taocijiezhifa/       陶瓷截止閥

http://www.zk-v.com/qieduanfa/           切斷閥

http://www.zk-v.com/qidongqieduanfa/     氣動切斷閥

http://www.zk-v.com/paizhazhihuifa/      排渣止回閥

http://www.zk-v.com/paizhazhafa/         排渣閘閥

http://www.zk-v.com/duangangfamen/       鍛鋼閥門

http://www.zk-v.com/zhixingqifujian/     執行器及附件

http://www.zk-v.com/ddzxjg/              電動執行機構

http://www.zk-v.com/qdzxjg/              氣動執行機構