ASCO电磁阀的选型要领:
电磁阀选型首先应该依次遵循安全性,可靠性,适用性,经济性四大原则,其次是根据六个方面的现场工况(即管道参数、流体参数、压力参数、电气参数、动作方式、特殊要求进行选择)。 选型依据:
一、根据管道参数选择ASCO阿斯卡电磁阀的:通径规格(即DN)、接口方式
1、按照现场管道内径尺寸或流量要求来确定通径(DN)尺寸。
2、接口方式,一般>DN50要选择法兰接口,≤DN50则可根据用户需要自由选择。
二、根据流体参数选择电磁阀的:材质、温度组
1、腐蚀性流体:宜选用耐腐蚀电磁阀和全不锈钢;食用超净流体:宜选用食品级不锈钢材质电磁阀。
2、高温流体:要选择采用耐高温的电工材料和密封材料制造的电磁阀,而且要选择活塞式结构类型的。
3、流体状态:大至有气态,液态或混合状态,特别是口径大于DN25订货时一定要区分开来。
4、流体粘度:通常在50cSt以下可任意选择,若超过此值,则要选用高粘度电磁阀。
三、根据压力参数选择电磁阀的:原理和结构品种
1、公称压力:这个参数与其它通用阀门的含义是一样的,是根据管道公称压力来定。
2、工作压力:如果工作压力低则必须选用直动或分步直动式原理;最低工作压差在0.04Mpa以时直动式、分步直动式、先导式均可选用。
四、电气选择:电压规格应尽量优先选用AC220V、DC24较为方便。
五、根据持续工作时间长短来选择:常闭、常开、或可持续通电
1、当电磁阀需要长时间开启,并且持续的时间多余关闭的时间应选用常开型。
2、要是开启的时间短或开和关的时间不多时,则选常闭型。
3、但是有些用于安全保护的工况,如炉、窑火焰监测,则不能选常开的,应选可长期通电型。
六、根据环境要求选择辅助功能:防爆、止回、手动、防水雾、水淋、潜水。
FEATURES
1.Minimum operating pressure differential a??P 0,3/0,5 bar
2. Two way valves for automatic control of water, air and inert gas
and other gases/liquids compatible with the sealing materials used
3. Interchangeability of magnetic heads, AC and DC
4. The solenoid valves satisfy all relevant EC Directives
GENERAL
Differential pressure [1 bar =100kPa]
Ambient temperature range -10?°C to +60?°C
Maximum viscosity 40 cSt (mm2/s)
Response time 3/8 1/2 3/4 1 1 1/4 1 1/2 2
opening time (ms) 25 30 55 70 300 300 1500
closing time (ms) 40 90 110 200 1000 1000 2000
fluids DN a‰¤ 25: air, inert gas and water DN > 25: air and water
temperature range (TS) -10?°C to +85?°C
seal materials NBR (nitrile) FPM (fluoroelastomer)
MATERIALS IN CONTACT WITH FLUID
Ensure that the compatibility of the fluids in contact with the materials is verified
Body Brass
Internal parts Stainless steel and brass
Springs Stainless steel
Diaphragm & valve disc NBR
Seals and pilot disc FPM ( 3/8 to 1), NBR ( 1 1/4 to 2)
Shading coil Copper
ELECTRICAL CHARACTERISTICS
Coil insulation class F
Connector Spade plug (cable ?? 6-8 mm or ?? 6-10 mm)
Connector specification
for power coil : 4 W/6,9 W DIN 43650, 11 mm, industry standard B
for power coil : 5W/6,9W-8W/9W ISO 4400 / EN 175301-803, form A
Electrical safety IEC 335
Electrical enclosure protection Moulded IP65 (EN 60529)
Standard voltages DC (=) : 24V - 48V
(Other voltages and 60 Hz on request) AC (~) : 24V - 48V - 115V - 230V / 50 Hz
SCG531D002MS EFG551H401MO SCG551A066 SCG552A001
SCG551A001MS SCG551A017MS SCG552A017MS 238410-058-D
272614-155-D 238410-058-D 238710-006-D 238610-158-D
238610-032-D 238614-058-D 238510-034-D 272614-155-D
272610-132-D 238714-006-D 238710-006-D 272610-058-D
238210-058-D 064982-005-D EF8551A001MS EF8551A017MS
EFG551H465 EFG551H466 EFG552G401MO 8210G94
HT8316G64 57000014 57000103 HT8316G64
HT8344G80 WSNF8327A112 8320G174 8210G009
EF8210G201 EF8262G212 NF8327B002 8344G072
8223G027 8263G205LT 8316G066 EF8320G174
EF8320G176 8320G184 EF8320G184 8320G186
EFG551H401 238610-058-D 099257-006-D WT8551A001MS
EF8551A001MS SCG551A201 8551B401 EF8344G370
WSNF8327B112 OFSF8263G206V NFG353A043 SCG353A051
52100001 52100004 52100005 52000380
12600024 60562300 34600137 JBEF8320G174
SCG553A017 SCG551A419 18900001 NF8327b102
52100008 52000008 35500335 35500333
35500337 35500341 43004886 35500346
35500347 35500338 SCG551A005MS SCG551A017MS
SCG551A018MS SCG551A001MS SCG551A002MS EFG551H401MO
54200001 12600008 NFB370A047 NF8327B112
SCG531D001MS WSNF8551A421 SCB344A074 SC8344A074
SCE370A008MS EFG551G401M0 8215B50 E238A204
SCE238A004 SCXB320A178 EF8316G4 EF8210G4
8342G003 EFG551H401MO EF8316G54 EFG551H401MO
8344B60M0 8355A082 HT8344G44 8210G15
HT8316G74 E290A005 EF8025A224MO 8262G019
NBXB210B038 8320G200 NF327A011 SCG8551A001MS
SCG8551A017MS 43004158 8223G021 8360G071
EF8210G094 EF8210G056 EF8210G095 SCE210C094
WT8551A001 SCG353A047 SCG353A051 SCG353A060
EF8327G2 NFB327A011 8323G3 8320G202
34203087 35500333 52000008 U8325B14V
8316G66 NFB320A200 EFHC801bG1 EFHC8321G2
HB8320G200 HBXB320A200 HT8316G66 NF8320A200
EF8551A001MS EF8210D089V EFG551417MO 8316G24MO
EFHC801bG1 EFHC8321G2 HB8320G200 HT8316G66
NF8320A200 EFL8344G70 8320G13 52100004
8025D224 SCG353A044 EF8342G003 SCE238A005
8342G1 35500343 35500344 35500346
SCG238C017 8210G95HW SCG353A043 U8325B39V
8210C93N 8342G001 8316G24MO NFG551A401MS
WBIS8223A310 WBIS8262A386 WBIS8316A381VWBIS8316A384V
8262G13 8263G206V EF8308741F EF8308B40
EF8320G174 EV8327G52 EV855G455 18900001
35500382 54191006 EF8344G70 8344G72
NFG551B402MS 8210G2 54190017 13100156
EFHC8210G11 EFHC8210G13 EFHC8210G3 8290AO34
WBIS8314A300MO 88100142 EV8316G384V 8210G95
8342G001 WPTISB307A406 V8316G384V EFG551G417MO
NFB551B401 EF8320G18 54100883 55102005
55102009 55102011 EF8300D61U 43004422
U8325B39V SCE238A007 43004166 NFB316A54
55192005 E238A207 34207093 EF8025B224
HT8316G074 12100309 34203086 8345G1
19200001 8210G13 8321G1 EF8300D61U
SCG531B001MS 8262G80M0 EF8320G188 EF8342C1
43550447 55192009 55192011 EV8316G82
8210G037 SCXG327A001 EF8210G088 EF8342G3MS