(1)Iivalvu ezisetyenziswa kumbhobho wonikezelo lwamanzi zikhethwa ngokubanzi ngokwale migaqo ilandelayo:

1. Xa ububanzi bombhobho bungekho ngaphezu kwe-50mm, i-valve yokumisa kufuneka isetyenziswe. Xa ububanzi bombhobho bukhulu kune-50mm, ivalve yesango okanyeivelufa butterflykufuneka isetyenziswe.

2. Xa kuyimfuneko ukulungelelanisa ukuhamba kunye noxinzelelo lwamanzi, i-valve yokulawula kunye ne-valve yokumisa kufuneka isetyenziswe.

3. Iivalvu zesango kufuneka zisetyenziselwe iindawo ezifuna ukuxhathisa ukuhamba kwamanzi amancinci (njengakwipayipi yokufunxa impompo yamanzi).

4. Iivalve zesango kunye ne-butterfly valves kufuneka zisetyenziswe kumacandelo emibhobho apho amanzi kufuneka ahambe kuwo omabini amacala, kwaye iivalve zokumisa azivumelekanga.
5. Iivalve zebhabhathanekunye neevalvu zebhola kufuneka zisetyenziswe kwiindawo ezinendawo encinci yokufakela.

6. Iivalve zokumisa kufuneka zisetyenziswe kumacandelo emibhobho ehlala ivuliwe kwaye ivaliwe.

7. Umbhobho wokuphuma wempompo yamanzi enobubanzi obukhulu kufuneka uthabathe ivalve enemisebenzi emininzi

(2) Ezi ndawo zilandelayo zombhobho wonikezelo lwamanzi kufuneka zixhotyiswe ngeevalvu:
1. Imibhobho yonikezelo lwamanzi kwiindawo zokuhlala yaziswa kwimibhobho yonikezelo lwamanzi kamasipala.

2. Iinqununu zombhobho wombhobho wombhobho wangaphandle kwindawo yokuhlala kufuneka zibekwe ngokweemfuno zokuhlukana. Xa icandelo lombhobho we-annular lide kakhulu, iivalve zecandelo kufuneka zifakwe.

3. Isiphelo sokuqala sombhobho wesebe oqhagamshelwe kumbhobho omkhulu wokuhambisa amanzi kwindawo yokuhlala okanye ekuqaleni kombhobho wendlu.

4. Imibhobho yasekhaya, iimitha zamanzi kunye nezinyusi zesebe (ezantsi kombhobho omileyo, iziphelo eziphezulu nezisezantsi zombhobho othe nkqo wombhobho wombhobho wothungelwano).

5. Imibhobho ye-sub-trunk yombhobho wombhobho womnatha kunye nemibhobho yokudibanisa ehamba kwinethiwekhi yombhobho wesebe.

6. Indawo yokuqalisa umbhobho wokuhambisa amanzi odibanisa umbhobho wonikezelo lwamanzi wangaphakathi kumakhaya, izindlu zangasese zikawonke-wonke, njl. njl., kunye nendawo yokuhambisa amanzi kumbhobho wesebe lokuhambisa 6 usetwa xa kukho iindawo ezi-3 okanye ngaphezulu zokuhambisa amanzi.

7. Umbhobho wokuphuma wempompo yamanzi kunye nempompo yokufunxa yempompo yamanzi ezizilungisayo.

8. Imibhobho yokungena nokuphumayo kunye nemibhobho yokukhupha amanzi etankini lamanzi.

9. Imibhobho yokubonelela ngamanzi kwizixhobo (ezifana nezifudumezi, iinqaba zokupholisa, njl.).

10. Imibhobho yokuhambisa amanzi kwizixhobo zococeko (ezifana nezindlu zangasese, iindawo zokuchama, izitya zokuhlambela, iishawari, njl. njl.).

11. Ezinye izesekeli, ezifana ne-front of automatic exhaust valve, i-valve yokunciphisa uxinzelelo, i-hammer eliminator yamanzi, i-gauge ye-pressure gauge, i-sprinkler cock, njl., ngaphambili nangasemva kwevalve yokunciphisa uxinzelelo kunye ne-backflow preventer, njl.

12. Ivalve yokuhambisa amanzi kufuneka ifakwe kwindawo esezantsi yothungelwano lombhobho wokuhambisa amanzi.

(3) Ikhangela ivalvekufuneka ikhethwe ngokubanzi ngokwemiba efana nendawo yofakelo, uxinzelelo lwamanzi phambi kwevalve, iimfuno zokusebenza zokutywina emva kokuvalwa, kunye nobungakanani behamile yamanzi ebangelwa kukuvalwa:
1. Xa uxinzelelo lwamanzi phambi kwevalve luncinci, i-valve yokukhangela i-swing, i-valve yokujonga ibhola kunye ne-valve yokukhangela i-shuttle kufuneka ikhethwe.

2. Xa umsebenzi wokutywina oqinileyo ufuneka emva kokuvalwa, kuyacetyiswa ukuba ukhethe i-valve yokutshekisha ngentwasahlobo yokuvala.

3. Xa kuyimfuneko ukuba buthathaka kwaye uvale isando samanzi, kuyacetyiswa ukuba ukhethe i-valve yokujonga i-valve yokuvala ingxolo yokuvala ngokukhawuleza okanye i-valve yokujonga ngokukhawuleza kunye nesixhobo sokuhlamba.

4. I-disc okanye i-core ye-valve yokutshekisha kufuneka ikwazi ukuvala ngokuzenzekelayo phantsi kwesenzo sobunzima okanye amandla entwasahlobo.

(4) Izivalo zokukhangela kufuneka zifakwe kula macandelo alandelayo ombhobho wonikezelo lwamanzi:

Kumbhobho wokungena; kumbhobho wokungena kwamanzi we-heater yamanzi evaliweyo okanye izixhobo zamanzi; kwicandelo lombhobho ophumayo wetanki yamanzi, inqaba yamanzi, kunye nedama eliphantsi komhlaba apho umbhobho ophumayo wempompo wamanzi wabelana ngombhobho omnye.

Qaphela: Akuyimfuneko ukufaka i-valve yokutshekisha kwicandelo lombhobho elixhotywe ngombhobho wokubuyela umva.

(5) Izixhobo zokukhupha umoya kufuneka zifakwe kwezi ndawo zilandelayo zombhobho wonikezelo lwamanzi:

1. Kwinethiwekhi yombhobho wokuhambisa amanzi esetyenziswe ngokukhawuleza, i-drain ngokuzenzekelayo kufuneka ifakwe ekupheleni kunye neyona ndawo iphakamileyo yomnatha wombhobho.
ivalve yegesi.

2. Kwiindawo ezinokuguquguquka okucacileyo kunye nokuqokelela kwegesi kwinethiwekhi yombhobho wokuhambisa amanzi, i-valve yokukhupha ngokuzenzekelayo okanye i-valve ye-manual ifakwe kwindawo ephakamileyo yendawo yokukhupha.

3. Kwisixhobo sokuhambisa amanzi ngoxinzelelo lomoya, xa kusetyenziswa uhlobo oluzenzekelayo lwetanki yamanzi yoxinzelelo lomoya, indawo ephezulu yenethiwekhi yombhobho wokuhambisa amanzi kufuneka ixhotyiswe nge-valve yokukhupha ngokuzenzekelayo.