德國奧萊斯OLES進(jìn)口高溫止回閥

【進(jìn)口高溫止回閥】詳細(xì)說明:

高溫高壓止回閥整體采用鍛造工藝，是高溫、高壓管路中防止介質(zhì)倒流，如火電廠、核電站，石油化工系統(tǒng)的高溫、高壓管路上。按鍛鋼高溫高壓止回閥可按以下三個工藝：

1、螺栓式閥蓋，按這種設(shè)計(jì)形式設(shè)計(jì)的閥門，其閥體與閥蓋用螺栓螺母連接，纏繞式墊片（316夾柔性石墨制造）密封?？蛻粲刑厥庖髸r(shí)也可采用金屬環(huán)連接。

2、焊接式閥蓋，按這種設(shè)計(jì)形式的閥門，其閥體與閥蓋用螺紋連接，全焊密封?？蛻粲刑厥庖髸r(shí)也可采用全焊透連接。

3、壓力自緊式閥蓋，按這種設(shè)計(jì)形式設(shè)計(jì)的閥門，其閥體與閥蓋用螺紋連接，內(nèi)壓自密環(huán)密封。

High temperature and high pressure check valves are forged to prevent medium backflow in high temperature and high pressure pipelines, such as thermal power plants, nuclear power plants and high temperature and high pressure pipelines in petrochemical systems. According to forged steel high temperature and high pressure check valve, the following three processes can be adopted:

1. Bolted bonnet. Valves designed according to this design form are connected with the bonnet by bolts and nuts, and sealed by winding gaskets (316 clips of flexible graphite). Metal rings can also be used when customers have special requirements.

2. Welded bonnet. According to this design, the body of the valve is threaded to the bonnet, and the valve is fully welded and sealed. Full penetration can also be used when customers have special requirements.

3. Pressure self-tightening valve cover. The valve designed according to this design form has a threaded connection between the body and the cover, and an internal pressure self-tightening ring is sealed.

【進(jìn)口高溫止回閥】特點(diǎn)：

1.閥門中腔采用壓力自緊式密封結(jié)構(gòu)，內(nèi)腔壓力越高密封性能越好。

2.支管兩端為對焊連接，適應(yīng)不同的接管要求。

3.閥門耐壓部件選用優(yōu)質(zhì)耐熱合金鋼制造，高溫性能好，承受壓力高，耐用、安全、可靠。

4.閥瓣、閥座的密封面采用司太立（stellite）鈷基硬質(zhì)合金堆焊而成，耐磨、耐高溫，抗擦傷性能好、使用壽命長。

5.閥瓣圍繞閥座外的銷軸旋轉(zhuǎn)，減少關(guān)閉時(shí)發(fā)生猛烈沖擊。

6.內(nèi)裝式的銷軸結(jié)構(gòu)，減小外泄漏點(diǎn)，使用更可靠。

【進(jìn)口高溫止回閥】特性：

閥瓣上部和閥蓋下部加工有導(dǎo)向套簡，閥瓣導(dǎo)向簡可在閥盞導(dǎo)向簡內(nèi)自由升降，當(dāng)介質(zhì)順流時(shí)，閥瓣靠介質(zhì)推力開啟，當(dāng)介質(zhì)停流時(shí)，閥瓣靠自垂降落在閥座上，起阻止介質(zhì)逆流作用