呼吸人孔（HXF-HR型） 防爆阻火呼吸人孔（HXF-HRZ型）
Breathing Manhole Breathing Manhole with Flame Arresting
呼吸人孔、阻火呼吸人孔是安裝在儲(chǔ)罐頂上的安全應(yīng)急通氣裝置，通常與阻火呼吸閥配套使用，既然避免因意外原因造成罐內(nèi)急劇超壓或真空時(shí)，損壞儲(chǔ)罐而發(fā)生事故，又能起到安全防火作用，是保護(hù)儲(chǔ)罐的安全裝置，特別適用于貯存物料以氮?dú)夥忭數(shù)墓绊敵汗�。具有定壓排放、定壓吸入、開(kāi)閉靈活、安全阻火、結(jié)構(gòu)緊湊、密封性能好、安全可靠等優(yōu)點(diǎn)。
Breathing Man hole and Breathing Manhole With Flame Arresting is a kind of emergent venting device for safety , which shall be installed on the top of the tank roof. It is usually used together with breather valve and flame arrester. It can not only avoid sudden extra-pressure or vacuum in tank causting storage tank, especially used for normal-pressuredome roof tanks with nitrogen-covered storage fuel. The products have advantages in exhaling and inhaling under fixed pressure, opening and closinged by accidents but also arrest the flame safely. At present it has been applied very well in protecfreely, safe arresting flame, compact structure, well-performed sealing and safety reliability etc.
阻火呼吸人孔“設(shè)備材質(zhì)” Materials of construction：
NO | 1 | 2 | 3 | 4 | 5 | 6 |
構(gòu)件 Component | 殼體 Body | 閥桿 Stem Guide | 閥盤(pán) Pressure Disk | 閥座 Pressure Seat | 閥套 Coating | 阻火芯件 Fire Arresting |
材質(zhì) Material | 不銹鋼 Steel 鋁合金 Aluminums 碳鋼 Casting | 304 316 316L PTFE | 304 316 316L PTFE | 304 316 316L PTFE | 304 316 316L PTFE | 304 316 316L PTFE |
注：連接標(biāo)準(zhǔn)：HG 、GB、 ANSI、 JIS、 DIN等等.
Standard Connection：HG、GB、ANSI、JIS、DIN、ect.
操作壓力：-392pa——+1961pa （-40pammH2O——+200mmH2O）
Operating Pressure：-392pa——+1961pa （-40pammH2O——+200mmH2O）
阻火呼吸人孔“尺寸表” Dimension table：
DN | 450 | 500 | 600 | 700 | 750 |
L | 370 | 380 | 480 | 540 | 600 |
H | 658 | 708 | 808 | 908 | 955 |
阻火呼吸人孔“訂貨須知” Order Construction：
1、訂貨時(shí)請(qǐng)注明產(chǎn)品尺寸、操作壓力及材質(zhì)。
Please give clear indication of Dimension，operating pressure and material.
2、當(dāng)需要其他標(biāo)準(zhǔn)法蘭、材質(zhì)或操作壓力時(shí)請(qǐng)?jiān)谟嗀洉r(shí)注明。
Please give clear indication of flange,material and operating pressure if you need other standard.
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