Brass Spring Check Valve yokhala ndi Fyuluta imapangidwa ndi mkuwa wonyengedwa, womwe umatchedwanso kuti valavu yosabwerera, yopangidwa kuti izitha kuyendetsa kayendedwe ka madzimadzi, madzimadzi amayendetsedwa ndi diski ndikuyenda mbali imodzi, yomwe imagwiritsidwa ntchito kwambiri popanga mapaipi, kupopera, ndi mapaipi.