Brass Spring Check Valve tare da Tace an yi shi da tagulla ƙirƙira, wanda kuma ake kira bawul ɗin da ba zai dawo ba, wanda aka ƙera don sarrafa tsarin sarrafa ruwa, ana sarrafa ruwan ta diski kuma yana gudana ta hanya ɗaya, ana amfani da shi sosai don aikin famfo, famfo, da bututun mai.