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原裝美國紐曼帝克氣動閥

美國ASCO防爆電磁閥在選型時的注意事項一、適用性
美國ASCO防爆電磁閥的選型依據(jù)電磁閥選型首先應(yīng)該依次遵循安全性，可靠性，適用性，經(jīng)濟性四大原則，其次是根據(jù)六個方面的現(xiàn)場工況（即管道參數(shù)、流體參數(shù)、壓力參數(shù)、電氣參數(shù)、動作方式、特殊要求進行選擇）。
美國ASCO防爆電磁閥管路中的流體必須和選用的電磁閥系列型號中標定的介質(zhì)*。流體的溫度必須小于選用電磁閥的標定溫度。電磁閥允許液體粘度一般在20CST以下，大于20CST應(yīng)注明。工作壓差，管路zui高壓差在小于0.04MPa時應(yīng)選用寧波艾爾派克公司如ZS,2W,ZQDF,ZCM系列等直動式和分步直動式；zui低工作壓差大于0.04MPa時可選用先導(dǎo)式（壓差式）電磁閥；zui高工作壓差應(yīng)小于電磁閥的zui大標定壓力；一般電磁閥都是單向工作，因此要注意是否有反壓差，如有安裝止回閥。流體清潔度不高時應(yīng)在電磁閥前安裝過濾器，一般電磁閥對介質(zhì)要求清潔度要好。注意流量孔徑和接管口徑；電磁閥一般只有開關(guān)兩位控制；條件允許請安裝旁路管，便于維修；有水錘現(xiàn)象時要定制電磁閥的開閉時間調(diào)節(jié)。注意環(huán)境溫度對電磁閥的影響電源電流和消耗功率應(yīng)根據(jù)輸出容量選取，電源電壓一般允許±10%左右，必須注意交流起動時VA值較高。
原裝美國紐曼帝克氣動閥

	Description	Media	Pipe Size	Function	Series
	Pneumatic Valve - Numatics Series ISO 15407-2 (18mm)	Air, Inert Gas;Vacuum	1/8;1/4;6 mm;8 mm	4 way - 5/2;4 way - 5/3;4 way - 5/3 - Closed Center;4 way - 5/3 - Open Center;4 way - 5/3 - Pressure Center;Dual 3 - Way 2 X Normally Closed;Dual 3 - Way 2 X Normally Open	iso-15407-2-18
	Pneumatic Valve - Numatics Series ISO 15407-2 (26mm)	Air, Inert Gas;Vacuum	1/4;3/8;8 mm;10 mm	4 way - 5/2;4 way - 5/3;4 way - 5/3 - Closed Center;4 way - 5/3 - Open Center;4 way - 5/3 - Pressure Center	iso-15407-2-26
	Pneumatic Valve - ISO Valve - 4 Way: 5/2, 5/3 - Numatics Series 5599/1	Air, Inert Gas;Vacuum	1/4;1/2;3/8;3/4	4 way - 5/2;4 way - 5/3;4 way - 5/3 - Closed Center;4 way - 5/3 - Open Center	iso-5599-1
	Pneumatic Valve - ISO Valve - 4 Way: 5/2, 5/3 - Numatics Series 5599/2 (Size 1)	Air, Inert Gas;Vacuum	1/4;3/8	4 way - 5/2;4 way - 5/3;4 way - 5/3 - Closed Center;4 way - 5/3 - Open Center;4 way - 5/3 - Pressure Center	5599/2-1
	Pneumatic Valve - ISO Valve - 4 Way: 5/2, 5/3 - Numatics Series 5599/2 (Size 2)	Air, Inert Gas;Vacuum	1/2;3/8	4 way - 5/2;4 way - 5/3;4 way - 5/3 - Closed Center;4 way - 5/3 - Open Center;4 way - 5/3 - Pressure Center	5599/2-2
	Pneumatic Valve - ISO Valve - 4 Way: 5/2, 5/3 - Numatics Series 5599/2 Size 3	Air, Inert Gas;Vacuum	1/2;3/4	4 way - 5/2;4 way - 5/3 - Closed Center;4 way - 5/3 - Open Center;4 way - 5/3 - Pressure Center