品牌：RETZ瑞茨/我們一直致力于流體控制領(lǐng)域的持續(xù)創(chuàng)新，始于2005……進(jìn)口分步直動(dòng)式電磁閥是一種直動(dòng)式和先導(dǎo)式相結(jié)合的原理，結(jié)構(gòu)分為活塞式和膜片式，適于用氣、水、油、蒸汽、燃?xì)�、腐蝕性流體的控制The imported step-by-step direct acting solenoid valve is a combination of direct acting and pilot operated principles, with a structure divided into piston type and diaphragm type, suitable for controlling gas, water, oil, steam, gas, and corrosive fluids
工作原理
常閉：當(dāng)線圈通電時(shí)，電磁力先打開先導(dǎo)孔，主閥活塞上腔壓力下降，從而利用壓差和電磁力吸動(dòng)先導(dǎo)閥芯連動(dòng)主活塞，電磁閥打開。 當(dāng)線圈斷電時(shí)，靠彈簧復(fù)位關(guān)閉先導(dǎo)孔，主活塞上腔增壓，推動(dòng)主活塞向下移動(dòng)，電磁閥關(guān)閉。
Normally closed: When the coil is energized, the electromagnetic force first opens the pilot hole, causing the pressure in the upper chamber of the main valve piston to decrease. Therefore, the pressure difference and electromagnetic force are used to attract the pilot valve core and connect the main piston, causing the electromagnetic valve to open. When the coil is powered off, the pilot hole is closed by spring reset, and the upper chamber of the main piston is pressurized, pushing the main piston to move downwards, and the solenoid valve is closed.
常開：常開與常閉相反 Normally open: The opposite of normally open and normally closed
選型參數(shù)范圍Selection parameter range：
產(chǎn)品規(guī)格：DN25-DN200 （中大口徑）
閥體材質(zhì)：鑄鐵、不銹鋼304、316。（鑄鐵不能用在腐蝕流體上）
適用介質(zhì)：氣、水、油、蒸汽、燃?xì)�、腐蝕性流體。
介質(zhì)溫度：0-100-300℃。
介質(zhì)粘度：小于50CSt （大于50時(shí)需定制）。
防護(hù)性能：防水、防爆（Exd IICT5）、防腐。
閥芯材質(zhì)： 均為不銹鋼。
接線方式：接線座式、引線式、插頭式。
控制方式：常閉。
電源電壓：DC12~127V；AC36~380V。
連接方式：內(nèi)螺紋、法蘭、(外螺紋和特殊接口可定做或加轉(zhuǎn)接頭)
泄 漏 量：零
備注：特殊型可定制。
注：出口端壓力大于進(jìn)口端壓力時(shí)，介質(zhì)會(huì)反向?qū)�。可安裝止回閥或訂制帶止回功能的電磁閥
