Waɗannan bawuloli suna ba da damar rarraba kwararar mashigarwa zuwa sassa biyu daidai(50/50) kuma suna haɗa shi zuwa ga jujjuyawar al'amura, ba tare da la'akari da shi bakowane bambance-bambancen matsa lamba da kwarara. Ana amfani da waɗannan bawuloli lokacinguda biyu daidai actuators, waɗanda ba a haɗa su da injiniyoyi ba, an kawo suta hanyar famfo guda ɗaya da sarrafawa ta hanyar rarraba guda ɗaya, dole nemotsawa lokaci guda duka a shigarwa da fitarwa.
Jiki: karfe da aka yi da zinc
Sassan ciki: ƙarfe mai tauri da ƙasa
Seals: BUNA N misali da Teflon
Tightness: ta hanyar haɗin diamita. Karamin yabo
Haƙurin kuskuren bugun silinda na ± 3% Duk wani aiki tarebambance-bambancen suna cike da madaidaicin matsayi nabugun jini.
Haɗa P zuwa matsa lamba da A da B zuwa masu kunnawa.