(1) Amavalvu asetshenziswa epayipini lokuphakelwa kwamanzi ngokuvamile akhethwa ngokwemigomo elandelayo:

1. Uma ububanzi bepayipi bungaphezu kuka-50mm, kufanele kusetshenziswe ivalvu yokumisa. Uma ububanzi bepayipi bungaphezu kuka-50mm, ivalvu yesango nomaivalvu yebhabhathanekufanele kusetshenziswe.

2. Uma kudingeka ukulungisa ukugeleza kanye nomfutho wamanzi, kufanele kusetshenziswe ivalvu elawulayo kanye nevalvu yokumisa.

3. Ama-valve esango kufanele asetshenziswe ezingxenyeni ezidinga ukumelana nokugeleza kwamanzi okuncane (njengasepayipini lokumunca iphampu yamanzi).

4. Amavalvu esango namavalvu ebhabhathane kufanele asetshenziswe ezindaweni zamapayipi lapho amanzi kudingeka ageleze khona kuzo zombili izinhlangothi, futhi amavalvu okuma awavunyelwe.
5. Amavalvu ebhabhathanekanye nama-ball valve kufanele asetshenziswe ezingxenyeni ezinesikhala esincane sokufakwa.

6. Ama-valve okumisa kufanele asetshenziswe ezingxenyeni zamapayipi ezivame ukuvulwa nokuvalwa.

7. Ipayipi lokukhipha amanzi elinobubanzi obukhulu kufanele lisebenzise ivalvu enemisebenzi eminingi

(2) Izingxenye ezilandelayo zombhobho wamanzi kufanele zifakwe ama-valve:
1. Amapayipi okuhambisa amanzi ezindaweni zokuhlala afakwa emapayipini okuhambisa amanzi kamasipala.

2. Ama-node enethiwekhi yamapayipi angaphandle endaweni yokuhlala kufanele abekwe ngokwezidingo zokuhlukanisa. Uma ingxenye yamapayipi ajikelezayo inde kakhulu, kufanele kufakwe ama-valve ahlukene.

3. Isiphetho sokuqala sepayipi legatsha elixhunywe epayipini elikhulu lamanzi lendawo yokuhlala noma isiphetho sokuqala sepayipi lasekhaya.

4. Amapayipi asekhaya, amamitha amanzi kanye nezikhuphuli zamagatsha (phansi kwepayipi elimisiwe, imikhawulo ephezulu nephansi yepayipi elimisiwe lenethiwekhi yepayipi eliyindandatho eliqondile).

5. Amapayipi angaphansi kwesiqu senethiwekhi yepayipi eliyindilinga kanye namapayipi axhumanisayo adlula kunethiwekhi yepayipi legatsha.

6. Indawo yokuqala yepayipi lokusabalalisa amanzi exhumanisa ipayipi lokuhambisa amanzi langaphakathi nemizi, izindlu zangasese zomphakathi, njll., kanye nendawo yokusabalalisa amanzi epayipini legatsha lokusabalalisa 6 isethwa uma kunezindawo zokusabalalisa amanzi ezintathu noma ngaphezulu.

7. Ipayipi lokukhipha amanzi kanye nephampu yokumunca amanzi elizibhoboza ngokwalo.

8. Amapayipi okungena nawokuphuma kanye namapayipi okukhipha amanzi ethangi lamanzi.

9. Amapayipi okuhambisa amanzi emishini (njengezifudumezi, imibhoshongo yokupholisa, njll.).

10. Amapayipi okusabalalisa amanzi ezinto zasendlini (njengezindlu zangasese, izindawo zokuchama, izitsha zokugezela, amashawa, njll.).

11. Ezinye izesekeli, njengengaphambili levalvu yokukhipha umoya ezenzakalelayo, ivalvu yokukhulula ukucindezeleka, isiqedi samanzi sesando, igeyiji yokucindezela, i-sprinkler cock, njll., ingaphambili nangemuva levalvu yokunciphisa ukucindezela kanye nesivimbeli sokugeleza emuva, njll.

12. Ivalvu yokukhipha amanzi kufanele ifakwe endaweni ephansi kakhulu yenethiwekhi yamapayipi okuhambisa amanzi.

(3) Iivalvu yokuhlolangokuvamile kufanele kukhethwe ngokuya ngezici ezifana nendawo yokufakwa kwayo, ingcindezi yamanzi phambi kwevalvu, izidingo zokusebenza kokuvala ngemva kokuvala, kanye nosayizi wesando samanzi esibangelwa ukuvala:
1. Uma umfutho wamanzi phambi kwevalvu umncane, kufanele kukhethwe ivalvu yokuhlola i-swing, ivalvu yokuhlola ibhola kanye nevalvu yokuhlola i-shuttle.

2. Uma kudingeka ukusebenza kokuvala okuqinile ngemva kokuvala, kungcono ukukhetha ivalvu yokuhlola enentwasahlobo yokuvala.

3. Uma kudingeka ukuvala nokunciphisa i-water hammer, kuyalulekwa ukukhetha i-check valve evala ngokushesha noma i-check valve evala kancane ene-damping device.

4. Idiski noma umongo wevalvu yokuhlola kufanele ikwazi ukuvala ngokuzenzakalelayo ngaphansi kwesenzo samandla adonsela phansi noma amandla entwasahlobo.

(4) Ama-valve okuhlola kufanele afakwe kulezi zingxenye ezilandelayo zepayipi lokuphakelwa kwamanzi:

Epayipini lokungena; epayipini lokungena kwamanzi le-heater yamanzi evaliwe noma imishini yamanzi; engxenyeni yepayipi lokungena kwamanzi lethangi lamanzi, umbhoshongo wamanzi, kanye nechibi elisemhlabathini ophezulu lapho ipayipi lokungena lokungenisa amanzi kanye namapayipi okungenisa amanzi abelana ngepayipi elilodwa.

Qaphela: Akudingeki ukufaka i-check valve engxenyeni yepayipi efakwe isivimbeli sokugeleza kwamanzi emuva kwepayipi.

(5) Amadivayisi okukhipha ugesi kufanele afakwe ezingxenyeni ezilandelayo zepayipi lokuphakelwa kwamanzi:

1. Kwinethiwekhi yamapayipi okuhambisa amanzi esetshenziswa ngezikhathi ezithile, kufanele kufakwe amapayipi okuhambisa amanzi azenzakalelayo ekugcineni naphezulu kwenethiwekhi yamapayipi.
ivalvu yegesi.

2. Ezindaweni ezinokuguquguquka okusobala kanye nokuqongelela kwegesi kunethiwekhi yamapayipi okuhambisa amanzi, kufakwe ivalvu yokukhipha umoya ezenzakalelayo noma ivalvu ephathwayo endaweni ephakeme yendawo yokukhipha umoya.

3. Kwidivayisi yokuphakelwa kwamanzi omfutho womoya, lapho kusetshenziswa ithangi lamanzi omfutho womoya ohlobo lokuphakelwa komoya ozenzakalelayo, indawo ephezulu kakhulu yenethiwekhi yamapayipi okusabalalisa amanzi kufanele ifakwe ivalvu yokukhipha umoya ozenzakalelayo.