Ol valv bilong Solenoid em ol samting bilong elektro-mekanikal ol i save yusim bilong kontrolim ron bilong ol wara, planti taim long ol aplikesen olsem ol wara pawa sistem, irigasen, hatim, na mekim ol sistem bilong mekim ol i kol i kol i save ron . Ol tok "4V" na "3V" ol i save yusim long tok klia long ol solenoid valv i bihainim namba bilong ol posisen na namba bilong ol rot we valv i ken mekim wok bilong. Yumi inap long mekim wok bilong. yumi ken mekim wok bilong. yumi ken mekim wok bilong ol.
1. **Namba bilong ol Posisen (3V na 4V):**
- **3V Solenoid Valve:** Dispela valv i gat tripela posisen - planti taim, ol dispela i op, pas, na eksos.
- **4V Solenoid Valve:** Dispela valv i gat 4-pela posisen, we planti taim i gat tupela op posisen, wanpela posisen i pas, na wanpela eksos posisen.
2. **Namba bilong ol Rot (3V na 4V):**
- **3V Solenoid Valv:** Dispela valv ol i save kolim olsem 3-we valv. Em i gat tripela port: wanpela inlet, wanpela autlet, na wanpela eksos port{{4} valv inap long daunim ron namel long inlet na autlet, o pasim ron bilong en, larim wara i go aut long pinis bilong en.
- **4V Solenoid Valv:** Dispela valv ol i save kolim olsem 4-we valv. Em i gat 4-pela port: tupela inlet, wanpela autlet, na wanpela eksos{{4} valv inap kontrolim ron namel long ol inlet na ol autlet, o pasim ron bilong wara, larim wara i go aut long eksos{5}} .
