Ivalvu yedamper ye-bypass eneendlela ezintathu iquka umzimba wevalvu ezimbini, idiski ezimbini zevalvu, isihlalo sevalvu ezimbini, i-tee enye, kunye neesilinda ezi-4. Umzimba wevalvu wahlulwe waba ziimbobo ezintathu u-A, u-B, kunye no-C eziqhagamshelwe ngaphandle yisitulo seplate yevalvu. Izinto zokutywina zifakelwe phakathi komzimba wevalvu kunye nesihlalo seplate yevalvu. Ipleyiti yedamper yomoya ekwimbobo iqhagamshelwe kwisilinda ngeshafti yokudibanisa. Ngokutshintsha indawo yeplate yevalvu, indlela yokuhamba kwegesi kwipayipi inokutshintshwa; Ngenxa yokutshintshana kobushushu emzimbeni wokugcina ubushushu, ubushushu bokusebenza bevalvu yokubuyisela umva buphantsi kakhulu, kwaye akukho mfuneko ikhethekileyo yezinto zevalvu yokubuyisela umva.

Nangona kunjalo, ngenxa yeemfuno zemveliso eqhubekayo, ivalvu yokubuyisela umva kufuneka yoyise ukuguguleka okubangelwa luthuli kwigesi yomoya kunye nemiphumo yokubola. Iindawo zoomatshini kufuneka ziqinisekise ukuguguleka okubangelwa kukutshintsha rhoqo kwezinto, nto leyo eye yafuna ukuthembeka okuphezulu kunye nobomi bokusebenza.