ED1 ED2 ED3 ED5 ED6 ED8 Plunger Siab Relay

ED: Ib qhov chaw nres nkoj, lub ntiaj teb-style tswj valve nrog lub tawb coj, sib npaug valve ntsaws, thiab thawb-down-rau-kaw valve ntsaws ua haujlwm (daim duab 1) EAD: Lub kaum sab xis ntawm ED tswj valve, siv los pab tswj cov kav dej lossis hauv cov ntawv thov qhov twg xav tau tus kheej-draining valve (daim duab 2) EDR: Zoo ib yam li ED tswj valve tshwj tsis yog nrog thawb-down-rau-qhib valve plug ua haujlwm (daim duab 3)