進(jìn)口氨用止回閥，氨氣逆止閥慨述 Express with regret

氨用止回閥（氨氣逆止閥）適用于城市燃?xì)猓喊保夯瘹獾裙艿溃彩褂糜跓捰蛷S，石油化工廠，火力發(fā)電廠的冷卻系統(tǒng)，作為控制介質(zhì)逆流的啟閉裝置 RETZ Ammonia check valve (ammonia check valve) is applicable to urban gas, liquid ammonia, liquefied gas and other pipelines, and also used in the cooling system of refineries, petrochemical plants, and thermal power plants as the opening and closing device to control the reverse flow of the medium

技術(shù)參數(shù) Technical paramete

通徑:2”~12” (DN50~300)

壓力等級(jí)：ANSI/ASME 150Lb~300Lb(PN1.6~4.0 Mpa)

適用溫度：-40~120℃

連接方式：法蘭

進(jìn)口氨用止回閥，氨氣逆止閥結(jié)構(gòu)特點(diǎn)StructureFeatures

1、旋啟式結(jié)構(gòu)：閥瓣利用流體壓差和自身重力實(shí)現(xiàn)旋轉(zhuǎn)運(yùn)動(dòng)，流阻系數(shù)小，適用于大部分的貯罐區(qū)垂直管路上，自動(dòng)阻止介質(zhì)逆流，保證上游設(shè)備 Swing structure: the valve clack uses the fluid pressure difference and its own gravity to realize rotary movement, with small flow resistance coefficient, which is applicable to most vertical pipelines in the tank area, automatically prevents the medium from flowing backward, and ensures the upstream equipment

注∶本閥可垂直水平安裝，垂直安裝介質(zhì)必須有下向上 Note: The valve can be installed vertically and horizontally, and the vertical installation medium must be downward and upward

2、升降式結(jié)構(gòu)：閥瓣利用流體壓差和自身的重量實(shí)現(xiàn)升降，適用于水平管路上，自動(dòng)阻止介質(zhì)逆流，保護(hù)上游設(shè)備 Lifting structure: the valve clack uses the fluid pressure difference and its own weight to achieve lifting, which is suitable for horizontal pipelines, automatically prevents the medium from flowing backward, and protects upstream equipment

注∶本閥在管路上，只能水平安裝 Note: This valve is installed horizontally on the pipeline only

3、立式結(jié)構(gòu)：閥瓣利用流體壓差和自身的重量實(shí)現(xiàn)升降，適用于大部份的罐區(qū)垂直管路上，自動(dòng)阻止介質(zhì)逆流，保護(hù)上游設(shè)備 Vertical check structure: the valve clack uses the fluid pressure difference and its own weight to achieve lifting and lowering, which is applicable to most of the vertical pipelines in the tank farm. It can automatically prevent the reverse flow of media and protect upstream equipment

注∶本閥只能垂直安裝，介質(zhì)有下向上 Note: The valve can only be installed vertically, and the medium is downward and upward

密封材料特點(diǎn)說(shuō)明 Description of sealing material characteristics

聚四氟乙烯（PTFE） 優(yōu)點(diǎn)∶耐溫（-196~120℃），耐腐∶耐強(qiáng)酸強(qiáng)堿、水和各種有機(jī)溶劑。無(wú)毒害/不粘附/高潤(rùn)滑/耐氣候。機(jī)械性質(zhì)較軟，有“塑料王”之稱	巴氏合金 特點(diǎn)∶因其呈白色，又稱白合金，低硬度軸轉(zhuǎn)動(dòng)的材料。 熔點(diǎn)∶固相點(diǎn)溫度為240℃，液相點(diǎn)溫度為370℃，僅限使用溫度不得超過(guò)100℃，摩擦系數(shù)在有油時(shí)為0.005，無(wú)油時(shí)為0.28

主要零件與材質(zhì)Main Parts and Materials

旋啟式結(jié)構(gòu)

升降式結(jié)構(gòu)

立式結(jié)構(gòu)