Vacuum Valve for automobile air conditioning syste
Zoe Liao
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Basic Information
| Standard or Nonstandard | Standard |
|---|---|
| Structure | Control |
| Pressure | Vacuum |
| Power | Pneumatic |
| Material | Rubber |
| Temperature of Media | Low Temperature |
| Place of Origin | 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.
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