标准或Nonstandard |
标准 |
结构 |
控制 |
压力 |
吸尘器 |
权力 |
气压 |
材料 |
橡胶 |
温度的媒体 |
低温度 |
出生地 |
Sichuan China (Mainland) |
Vacuumvalve Intheautomobileairconditioningsystem,vacuumvalveisusedforthecontrollingofvariousventilationoutlets,i.e.fortheheaterandblower. SPECIFICATIONS♦Standardairtightness Byvacuumpumpingtheinnerchamberofitsassembly,thevacuumpressureshallreach500mmHgat66.7Kpa,andtheleakageshouldbewithin0.53KPafor4mmHg/min. ♦RotatingArmPerformance Thestrokeisnolessthan29mmwhentheinnerchamberisvacuumizedby200mmHg Theroundtripstrokeshouldbenolessthan27mm,whentheupperandlowerairtapforvacuumassemblyisvacuumizedunder50mmHg. ♦Impactresistance Itsappearanceshouldstillbefineafterfreefallingfrom1meterhightotheground,whilemaintainingitsstandardairtightness. ♦High-temperaturetolerance Itshallstillbefineandkeeptoitsstandardairtightnessaftersustainingthetemperatureof88-92°Cfor96hoursandtheroomtemperaturefor6hours. ♦DurabilityandReliability Thevacuumpumpingtestshallbefrom0mmHgto400mmHg,andthenfrom400mmHgto0mmHg,underthetemperatureof28-32C.Abovetestingcycleshallbeoperatedformorethan25000times,whichisinaccordancewith10times/minfrequency.Thevacuumvalveshouldstillkeeptoitsstandardairtightnessaftersuchtests. ♦Thermoshockresistance Afterbeingtestedforsolong,thevalveassemblyshouldtakeanotherfivecycles,andonecyclestandsforfourhoursstayingat78-82°Ctemperatureandanother4hoursstayingat38-42 C temperature. Theexchangetimeshallbewithin1minute.Oncefinished,thevalveassemblyshallappearnoharmandkeeptoitsstandardairtightness.