Iivalvu zeNkampani yeNewsway Valve (NSW) zisetyenziswa ngokubanzi kwiindawo ezahlukeneyo zemibhobho, zinokuhlangabezana nezi mfuno zilandelayo iivalvu zemibhobho

1. Sika kwaye ukhulule i-medium

Lo ngowona msebenzi usisiseko wevalve. Ngokuqhelekileyo, i-valve ene-straight-through flow path ikhethiwe, kwaye ukuchasana kwayo ukuhamba kuncinci.

Izivalo ezivaliweyo emazantsi (Iivalvu zeglobhu, iivalve zeplunger) azifane zisetyenziswe ngenxa yeepaseji zazo ezijikelezayo kunye nokumelana nokuhamba okuphezulu kunezinye iivalve. Apho ukuchasana kokuhamba okuphezulu kuvunyelwe, ivalve evaliweyo ingasetyenziswa.

2. Culawulo lokuhamba

Ngokuqhelekileyo, i-valve ekulula ukuyilungisa ukuhamba ikhethwa njengolawulo lokuhamba. Ivalve yokuvala ezantsi (efana ne-aivalve yeglowubhu) ilungele le njongo kuba ubungakanani besihlalo sayo bulingana ne-stroke yelungu elivalayo.

Iivalve ezijikelezayo (Iivalve zokuplaga, iivalve butterfly, iivalve zebhola) kunye ne-flex-body valves (i-pinch valves, iivalve ze-diaphragm) nazo zingasetyenziselwa ukulawula i-throttling, kodwa zidla ngokusebenza kuphela phakathi koluhlu olulinganiselweyo lwe-diaphragm.

Ivalve yesango isebenzisa isango elimilise idiskhi ukwenza intshukumo enqamlezayo ukuya kwindawo yokuvula isihlalo sevalve. Iyakwazi ukulawula ukuhamba kakuhle kuphela xa isondele kwindawo evaliweyo, ngoko ngokuqhelekileyo ayisetyenziselwa ukulawula ukuhamba.

3. Ukubuyisela umva kunye nokushukuma

Ngokweemfuno zokubuyisela umva kunye ne-shunting, olu hlobo lwesivalo lunokuba neziteshi ezintathu okanye ngaphezulu. Iivalve zokuplaga kunyeIivalvu zebhola ezi-3zifanelekile ngakumbi kule njongo. Ke ngoko, uninzi lweevalvu ezisetyenziselwa ukubuyisela umva kunye nokwahlula ukuhambahamba zikhetha enye yezi valve.

Kodwa kwezinye iimeko, ezinye iindidi zeevalvu zingasetyenziselwa ukubuyisela umva kunye nokucima nje ukuba iivalve ezimbini okanye ngaphezulu ziqhagamshelwe ngokufanelekileyo omnye komnye.

4. Phakathi kunye namasuntswana amisiweyo

Xa kukho iincinci ezimisiweyo phakathi, kukulungele kakhulu ukusebenzisa i-valve enefuthe lokusula kwi-sliding yelungu lokuvala kunye nokutywinwa kwendawo.

Ukuba intshukumo yangasemva naphambili yelungu elivalayo kwisihlalo sevalve ime nkqo, inokubamba amasuntswana. Ngoko ke, le valve ifaneleka kuphela kwimithombo yeendaba ecocekileyo ngaphandle kokuba indawo yokutywina ivumela ukuba iinqununu zifakwe. Iivalve zebhola kunye neeplagi zeplagi zinefuthe lokusula kwindawo yokutywina ngexesha lokuvula nokuvala, ngoko ke zifanelekile ukusetyenziswa kwimidiya kunye neengqungquthela ezimisiwe.