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ASCO WSNF8551A421MO belongs to the ASCO 551 (8551) series under Emerson, and is a pilot operated two position five way explosion-proof wet sealed normally closed solenoid valve. It is a special control component for pneumatic circuits in hazardous chemical conditions and is produced by ASCO in the United States. Our company has a significant advantage over the ASCO product WSNF8551A421MO.<\/p>\n
WSNF8551A421MO model code disassembly<\/span><\/strong><\/p>\n WSNF:<\/strong> Wet Sealed Normal Fail abbreviation, wet sealed normally closed explosion-proof electromagnetic head, coil shell stainless steel protection, with explosion-proof structure, moisture-proof and dustproof, wet sealed design to prevent medium from infiltrating the coil chamber; physical image<\/span><\/strong><\/p>\n Standard technical parameters<\/span><\/strong><\/p>\n Introduction of Xi ‘an Lilu Trading Co., LTD<\/span> Phone: +86-18392971088 <\/p>","protected":false},"excerpt":{"rendered":" ASCO solenoidvalve Origin:USA<\/p>\n
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\n8551<\/strong>: Basic series code=551 series, valve body is a two position five way (5-port 2-position) slide valve structure, NPT1\/4 standard threaded interface, and the valve body is equipped with aluminum alloy material as standard;
\nA421:<\/strong> Valve body configuration code, A represents aluminum alloy valve body, 421 defines interface specification 1\/4 “NPT internal thread, explosion-proof rating and coil electrical reference parameters, matched with explosion-proof certification standards;
\nMO:<\/strong> Manual Override abbreviation, comes with a manual emergency button, which can manually force the valve to open and close in the event of power failure, meeting equipment maintenance and emergency start stop needs.<\/p>\n
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\n Parameter Item<\/td>\n Technical Specification<\/td>\n<\/tr>\n \n Valve Structure<\/td>\n Pilot-operated 5\/2 way, spring return normally closed (NC)<\/td>\n<\/tr>\n \n Applicable Medium<\/td>\n Dry compressed air and various inert gases (Not applicable for liquid or high-viscosity media)<\/td>\n<\/tr>\n \n Operating Air Pressure<\/td>\n 0.2~1.0MPa (2~10bar)<\/td>\n<\/tr>\n \n Port Size<\/td>\n 1\/4″ NPT female thread (DN8)<\/td>\n<\/tr>\n \n Valve Body Material<\/td>\n Hard anodized aluminum<\/td>\n<\/tr>\n \n Medium Operating Temperature<\/td>\n -25\u2103\uff5e+60\u2103<\/td>\n<\/tr>\n \n Ambient Temperature<\/td>\n -40\u2103\uff5e+75\u2103<\/td>\n<\/tr>\n \n Coil Power<\/td>\n Standard: 9~11.2W \/ Low power: 1.5W<\/td>\n<\/tr>\n \n Explosion-proof Certifications<\/td>\n ATEX, IECEx, CSA, UL, NEPSI<\/td>\n<\/tr>\n \n Ingress Protection<\/td>\n IP66\/IP67<\/td>\n<\/tr>\n \n Cv Flow Coefficient<\/td>\n 0.87<\/td>\n<\/tr>\n \n Seal Material<\/td>\n Low-temperature resistant FKM fluoroelastomer<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
<\/strong>Xi ‘an Lilu Trading Co., Ltd. is a professional import and export focus on transmitter, flow meter, positioner instrument industry provider. We have a huge advantage in the following brand ROSEMOUNT, YOKOGAWA, HONEYWELL, SMC, IMI NORGREN, ABB, ENDRESS + HAUSER, FISHER, YTC, AZBIL, SIEMENS, SCHNEIDER and some European brands.
We look forward to your inquiry and hope that we can start the best cooperation.<\/p>\n
\u0627\u0644\u0628\u0631\u064a\u062f \u0627\u0644\u0625\u0644\u0643\u062a\u0631\u0648\u0646\u064a:\u00a0inquiry@lilutrading.com<\/a><\/p>\n![\"\"](\"https:\/\/ll-transmitter.com\/wp-content\/uploads\/2026\/06\/WSNF8551A421MO-2-300x151.png\")
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\nsolenoid valve WSNF8551A421MO
\nASCO WSNF8551A421MO
\nWSNF8551A421MO<\/p>\n