Iivalvu zeNewsway Valve Company (NSW) zisetyenziswa kakhulu kwiinkalo ezahlukeneyo zemibhobho, zinokuhlangabezana neemfuno ezilandelayoiivalvu zepayipi
1. Sika uze ukhulule i-medium
Lo ngumsebenzi osisiseko wevalvu. Ngokwesiqhelo, ivalvu enendlela yokuhamba ethe tye iyakhethwa, kwaye ukumelana kwayo nokuhamba kwamanzi kuncinci.
Iivalvu ezivaliweyo ezantsi (Iivalvu zeglobe, iivalvu ze-plunger) azisetyenziswa rhoqo ngenxa yeendlela zazo zokuhamba ezihambayo ezixineneyo kunye nokumelana nokuhamba kwamanzi okuphezulu kunezinye iivalvu. Apho ukumelana nokuhamba kwamanzi okuphezulu kuvunyelwe, ivalvu evaliweyo ingasetyenziswa.
2. Cukuhamba kolawulo
Ngokwesiqhelo, ivalvu elula ukuyilungisa iflow ikhethwa njengolawulo lweflow. Ivalvu yokuvala ezantsi (efana neivalvu yeglobhu) ifanelekile kule njongo kuba ubungakanani besihlalo sayo buhambelana nokubetheka kwelungu lokuvala.
Iivalvu ezijikelezayo (Iivalvu zeplagi, iivalvu zebhabhathane, iivalvu zebhola) kunye neevalvu zomzimba eziguquguqukayo (iivalvu zokuncina, iivalvu ze-diaphragm) nazo zingasetyenziselwa ukulawula ukugoba, kodwa zihlala zisebenza kuphela kuluhlu olulinganiselweyo lweedayamitha zevalvu.
Ivalvu yesango isebenzisa isango elimile okwediski ukwenza intshukumo yokunqumla ukuya kwindawo evulekileyo yesihlalo sevalvu esijikelezayo. Ingalawula ukuhamba kakuhle kuphela xa ikufutshane nendawo evaliweyo, ngoko ke ayisoloko isetyenziselwa ukulawula ukuhamba kwamanzi.
3. Ukubuyela umva nokujika
Ngokweemfuno zokubuyisela umva nokujika, olu hlobo lwevalvu lunokuba nemijelo emithathu nangaphezulu. Iivalvu zeplagi kunyeIivalvu zebhola ezineendlela ezintathuzilungele ngakumbi le njongo. Ke ngoko, uninzi lweevalvu ezisetyenziselwa ukubuyisa nokwahlula ukuhamba komoya zikhetha enye yezi valve.
Kodwa kwezinye iimeko, ezinye iintlobo zeevalvu zingasetyenziselwa ukubuyisa umva nokujika nje ukuba iivalvu ezimbini okanye ngaphezulu ziqhagamshelwe ngokufanelekileyo.
4. Iphakathi kunye namasuntswana axhonyiweyo
Xa kukho amasuntswana axhonyiweyo kwindawo yokucima umlilo, kungcono ukusebenzisa ivalvu enefuthe lokusula xa ilungu lokuvala lityibilika kumphezulu wokuvala.
Ukuba intshukumo yokuvala isitho esivalayo ukuya kwisihlalo sevalvu imile nkqo, inokubamba amasuntswana. Ke ngoko, le valve ifanelekile kuphela kwimidiya ecocekileyo esisiseko ngaphandle kokuba izinto zokuvala umphezulu zivumela amasuntswana ukuba afakwe. Iivalvu zebhola kunye neevalvu zeplagi zinefuthe lokusula kumphezulu wokuvala ngexesha lenkqubo yokuvula nokuvala, ngoko ke zifanelekile ukusetyenziswa kwimidiya enezisuntswana ezixhonyiweyo.
Ixesha lokuthumela: Agasti-06-2021