Valavu iwiri isanu ndi iwiri yomwe imagwiritsidwa ntchito kawirikawiri pakuwongolera ma pneumatitititic.
Nayi kuwonongeka kwa magwiridwe ake:
Molunjika solenoid: Izi zikutanthauza kuti valavu imakhala ndi zisoti ziwiri za solenoid, imodzi panjira iliyonse yoyenda. Pamene wina sonnoid ali ndi mphamvu, imasuntha valavu ku udindo umodzi, kulola kuyenda kwa mpweya mbali imodzi. Pamene enawo a Sokonoid ali ndi mphamvu, imasuntha valavuyo pamalo ena, kulola kutuluka kwa mpweya kumbali ina. Izi zimathandiza kuti azilamulira molondola.
5/2-mkono: "5" Mwa 5/2-njirayi amatanthauza kuchuluka kwa madontho, pomwe "2" amatanthauza kuchuluka kwa mavawo, madoko awiri omasulira, ndi doko limodzi. Valavuyo ili ndi maudindo awiri, omwe amazindikira madoko omwe amalumikizidwa wina ndi mnzake. Kusintha kumeneku kumalola kuwongolera kuwongolera kwa mpweya kupita ku penauctic sewero (mwachitsanzo, kuwonjezera kapena kubwereza silinda).
Mwachidule, valavu yowirikizayo imagwiritsidwa ntchito kuwongolera kuwongolera kwa ma pneumatititic.
