日本一在线中文字幕,91亚洲精品久久久电影,看东北大屁股大胖妇女操大逼

永嘉中任閥門(mén)制造有限公司

免企業(yè)未認(rèn)證證營(yíng)業(yè)執(zhí)照未上傳

經(jīng)營(yíng)模式：工廠

所在地：浙江省

進(jìn)入商鋪在線(xiàn)咨詢(xún)

導(dǎo)讀：DDC-JQ電磁真空帶充氣閥■DDC-JQ型－電磁真空帶充氣閥■DDC-JQ型電磁真空帶充氣閥是機(jī)械真空泵安全閥，安裝于機(jī)械真空泵的進(jìn)氣口，并與泵同步開(kāi)啟和關(guān)閉。當(dāng)泵?！?p>

DDC-JQ電磁真空帶充氣閥

■	DDC-JQ型－電磁真空帶充氣閥

	■	DDC-JQ型電磁真空帶充氣閥是機(jī)械真空泵安全閥，安裝于機(jī)械真空泵的進(jìn)氣口，并與泵同步開(kāi)啟和關(guān)閉。當(dāng)泵停止工作或電源突然中斷時(shí)，閥門(mén)自動(dòng)關(guān)閉。使真空系統(tǒng)保持真空并將大氣充入泵腔內(nèi)，從而避免泵油逆向流動(dòng)而污染真空系統(tǒng)。適用介質(zhì)為純凈空氣和非腐蝕性氣體。

■	DDC-JQ Electro-vacuum Charging Valve

	■	DDC-JQ electro-vacuum charging valve is a safety valve for vacuum, pump. It is mounted at the intake nozzle of vacuum pump, synchronously opened and closed with the vacuum pump. In case that vacuum pump stops working or power supply is suddenly broken off, valve will be cosed automatically to keep the vacuum system vacuum and the air charged into the cavity of vacuum pump, thus to prevent pump oil from reverse flow that can pollute the vacuum system. Applicable medium can be pure air and noncorrosive gases.

■

主要技術(shù)性能
Main Technical Performance

■

■

■

適用范圍：Applicability	10⁵～10^-2Pa
閥門(mén)漏率：Valve Leak Rate	≤6.7×10^-3Pa.L/S.
適用溫度：Applicability	-30～+50℃
線(xiàn)圍溫升：Coil Temperature Rise	≤65℃
開(kāi)閉時(shí)間：Open-close Time	≤3S
電源電壓：Mains Voltage	220V/50Hz

■	主要零件材料 Materials of Main Parts

	■ ■	閥體、閥蓋、閥板：碳鋼或鋁合金密封圈：丁腈橡膠 Body, bonnet and disc: carbon steel or aluminium alloy Seal ring: NBR

CONSTRUCTION FIGHTS(mm)

■	外形及連接尺寸(mm)(JB919) Overall and Connection Dimensions(mm)