Valve ya Brass Straineramapangidwa ndi mkuwa wonyengedwa, womwe umatchedwanso valavu yazitsulo zamkuwa, zomwe zimapangidwira kuti zisefe zonyansa mu kayendetsedwe ka madzimadzi, madzimadzi amayenda mbali imodzi ndi fyuluta ndi s / s fyuluta chophimba cha valve, chomwe chimagwiritsidwa ntchito kwambiri popanga mabomba, kupopera, ndi mapaipi.