Iyini ivalvu?
Ivalvu, kobunjiniyela bemishini, idivayisi yokulawula ukugeleza koketshezi (uketshezi, amagesi, ama-slurries) epayipini noma kwenye indawo evalekile. Ukulawula kwenziwa kusetshenziswa into ehambayo evula, ivale, noma ivimbe kancane imbobo endleleni. Amavalvu anezinhlobo eziyisikhombisa eziyinhloko: i-globe, isango, inaliti, ipulaki (i-cock), uvemvane, i-poppet, kanye ne-spool.

Ama-valve asebenza kanjani?
I-valve iyithuluzi elenziwe ngomshini elivimba ipayipi kancane noma ngokuphelele ukuze lishintshe inani loketshezi oludlula kulo.

Kusetshenziswa kuphi ama-valve okulawula impahla?
I-valve yokulawula iyi-valve esetshenziselwa ukulawula ukugeleza koketshezi ngokushintsha usayizi wendlela yokugeleza njengoba kuqondiswe isignali evela kumlawuli. Lokhu kwenza kube nokulawulwa okuqondile kwesilinganiso sokugeleza kanye nokulawulwa okulandelayo kwenani lenqubo efana nokucindezela, izinga lokushisa, kanye nezinga loketshezi.

Yiziphi izinhlobo ezahlukene zama-valve?
Kunezinhlobo ezahlukene zamavalvu ezitholakalayo: isango, iglobhu, ipulaki, ibhola, uvemvane, isheke, i-diaphragm, i-pinch, i-relief pressure, amavalvu okulawula njll. Uhlobo ngalunye lunamamodeli amaningana, ngalinye linezici ezahlukene kanye namakhono okusebenza.

Yiziphi izinhlobo ezahlukene zamavalvu ezisetshenziselwa zona?
Amavalvu okufaka ipulagi (amavalvu esihlalo), amavalvu ebhola, kanye namavalvu ebhabhathane yizinhlobo ezivame kakhulu zamavalvu asetshenziswa ohlelweni lokushisa, lokungenisa umoya, kanye nolokupholisa umoya. Amanye amavalvu asetshenziswa ohlelweni afaka phakathi amavalvu esango lommese, amavalvu e-diaphragm, kanye namavalvu esango.

Izinhlobo ezahlukene zamavalvu asetshenziswa emikhakheni ehlukene. Kulesi sihloko sikhulume ngezinhlobo ezingu-19 zamavalvu.
1. I-valve yeglobe
2. I-valve yesango
3. I-valve yebhola
4. Ivalvu yebhabhathane
5. Ivalvu ye-diaphragm
6. I-plug valve
7. Ivalvu yenaliti
8. I-valve ye-engela
9. I-valve yokuncinza
10. I-valve yesilayidi
11. I-valve engezansi yokugeza
12. I-valve ye-Solenoid
13. I-Valve Yokulawula
14. Ivalvu yokulawula ukugeleza
15. Ivalvu yokulawula ingcindezi yangemuva
16. Ivalvu yohlobo lwe-Y
17. Ivalvu yepiston
18. I-valve yokulawula ingcindezi
19. I-valve yokuhlola