1.Direct -} na-eme ihe
Ndị otu sonoid nwere mkpụrụ osisi na-emeghe valvụ na ntinye aka, na-eme ka aro ahụ na oche nke valve na-agbanwe. Direct -}}}}}} na-eme ihe ukwe na - eme ka ike mepụta magnetik ubi nke solenoid ka ọ rụọ ọrụ ahụ. Mgbe ewepụrụ eletriki ugbu a, mmiri na-arụ ọrụ na-alaghachi valvụ valve na ọnọdụ mbụ ya.
2.pilot - rụọ ọrụ na-arụ ọrụ
Na Pilot- ma na-arụ ọrụ na-emeghe oghere ọ na-emeghe mgbe nrụgide na-eme ka valve mepere emechi. In spite of the fact that pilot-operated valves require less electrical energy to work, need to keep up full power with a specific end goal to stay in an open state, and they perform at a slower rate than direct-acting solenoids. Direct -}}}}}}}}}}}}}}}}}}}}}} Ghaa ike zuru oke mgbe ha na-emeghe valvụ, dịka ha nwere ike ijide ọnọdụ ha na-enweghị ike mgbe ha na-arụ ọrụ dị ala.
3.To -
Nke a bụ ụdị valvụ Solenoid. Abụọ-}}}}}}} Watth nwere ọdụ ụgbọ mmiri abụọ, nke a na-ejikarị ekwe ka ọ ga-aga ya Uzo abuo-}}}} ch} "na-emeghe" ma ọ bụ "emechiela" n'ọrụ ya. Site na valvụ mepere emepe, valvụ ka na-emeghe ruo ugbu a na-etinye ugbu a iji mechie valvụ ahụ. Mgbe kwụsịtụrụ eletriki, valvụ na-emegharị ya na steeti ya. A na-emechi vaịlị mechiri emechi ruo mgbe ike isi na-eme ka ọ mepee.
