Iimfuno zofakelo lwevalvu yolawulo lombane

I-valve yokulawula umbane ifakwe kumbhobho kwaye idibene ngokuthe ngqo kunye ne-medium yokusebenza, kwaye ichaphazeleka kwiimeko ezinzima zokusebenza ezifana nokushisa okuphezulu, uxinzelelo oluphezulu, ukubola kunye nokuxubana ixesha elide. Ngoko ke, ukukhetha umgangatho wevalve elawulayo kunempembelelo enkulu kulawulo lwenkqubo. Ngoko ke, ukhetho oluchanekileyo nolufanelekileyo kunye nokufakwa kwevalve yokulawula kubaluleke kakhulu.

1. Ivalve yokulawula umbane kufuneka ihlolwe kwaye iqinisekiswe kuqala, kwaye ifakwe emva kokuba umbhobho uhlanjululwe.

2. Isikhundla sokufakela i-valve yokulawula umbane kufuneka ilungele ukusebenza kunye nokugcinwa, ukuze abasebenzi baqhube ukugcinwa kunye nokusebenza, kwaye iqonga kufuneka libekwe ukuba kuyimfuneko.

3. Xa i-valve yokulawula umbane ifakwe kwindawo yokungcangcazela, amanyathelo okulwa ne-vibration kufuneka aqwalaselwe.

4. Ivalve yokulawula yombane kufuneka ifakwe ngokuthe nkqo kwaye ime kumbhobho othe tye. Ivalve yokulawula ene-diameter ye-DN≥50 kufuneka ibe nezixhaso ezisisigxina kumbhobho ngaphambi nangemva kwevalve.

5. Kwiivalve zokulawula zombane ngaphandle kwe-valve positioner, kungcono ukufaka i-gauge encinci yoxinzelelo ebonisa uphawu lokulawula kwintloko ye-membrane.

6. Kufuneka kubekho indawo eyaneleyo kwiindawo eziphezulu kunye nezisezantsi zevalve yokulawula umbane ukususa i-actuator, i-valve trim, kunye ne-flange ephantsi kunye neplagi yevalve ngexesha lokugcinwa.

7. Indawo yokufakela i-valve yokulawula umbane kufuneka ihlangabezane neemfuno zoyilo lwenkqubo, kwaye kufuneka ibe kufuphi nesixhobo esiphambili sokubonisa esihambelana nayo, ukwenzela ukuba isixhobo esiphambili sinokubonwa xa i-valve ye-bypass iqhutywe ngesandla;

8. I-valve yokulawula kufuneka ihlelwe phantsi okanye iqonga kwaye ilungele ukusebenza kunye nokugcinwa.

9. Ivalve yokulawula kufuneka ifakwe ngokuthe tye kwaye ime nkqo kumbhobho othe tye. Ngaphantsi kweemeko ezikhethekileyo, inokufakwa ngokuthe tye okanye i-oblique, kodwa kufuneka ixhaswe;

10. Xa iqela le-valve elawulayo (kubandakanya i-valve yokulawula, i-valve ye-bypass, i-valve yokuvala kunye ne-drain valve) ifakwe ngokuthe nkqo, i-valve yokulawula kufuneka ifakwe ngaphantsi kwe-bypass. Iivalvu ezilawulayo ezinobubanzi obungaphantsi kwe-25mm nazo zinokufakelwa ngentla kwendlela yokudlula.