Amavalvu ephampu enziwe ngamabhola nezihlalo futhi ayisici esibalulekile uma usebenza ngaphansi kwengcindezi ephezulu ye-hydraulic ngenxa yokujula. Umklamo ophelele kuphela kanye nokukhetha okufanele kwezinto kungaqinisekisa impilo yazo yokusebenza.

Amabhola e-valve nezihlalo ze-valve zisetshenziswa kabanzi emikhakheni kawoyela, ukusebenza kwazo kuthinta ngqo umphumela wokusetshenziswa kanye nempilo yesevisi yamaphampu. Inhlanganisela ngayinye yebhola nesihlalo ihlolwa nge-vacuum ukuqinisekisa ukuthi kutholakala uphawu oluphelele kuzo zonke izikhundla zokuthintana.

Ibhola le-tungsten carbide kanye nesihlalo, ezenziwe ngezinto zokusetshenziswa ezingavuthiwe, zinobulukhuni obuphezulu, ukumelana nokuguguleka, ukumelana nokugqwala, kanye nokumelana nokugoba. Siyakwazi ukuhlinzeka ngamabhola e-Carbide ngezinhlobo ezahlukene zezinto ezifunwayo okuhlanganisa i-TC Cobalt, i-TC Nickel kanye ne-TC Titanium, kanti amabhola e-TC akhiqizwa ngokwezindinganiso ze-ISO kanye ne-Anti-Friction Bearing Manufacturer Association (AFMBA).

Ibhola le-tungsten carbide valve kanye nesihlalo kuzosetshenziswa kabanzi ku-valve engashintshi futhi ejikelezayo ephampini yokumunca uwoyela yohlobo lwe-tube ngenxa yobunzima bayo obuphezulu, ukumelana nokuguguleka kanye nokugqwala kanye nezinhlamvu ezinhle zokulwa nokucindezela kanye nokushaqeka kokushisa okunomphumela ophezulu wokupompa kanye nomjikelezo omude wokuhlola iphampu wokuphakamisa isihlabathi, igesi kanye ne-wax equkethe uwoyela ojiyile emithonjeni.

Amabhola angenalutho namabhola aqediwe anganikezwa. Amabhola ajwayelekile nalawo angajwayelekile ayatholakala.