1. Uma ingxenye yokuvala ikhululeka, kuvuza.

isizathu:

1. Ukusebenza okungasebenzi kahle kubangela ukuthi izingxenye zokuvala zibambeke noma zidlule iphuzu elingaphezulu elifile, okuholela ekuxhumaneni okonakele nokuphukile;

2. Ukuxhumana kwengxenye yokuvala kubuthakathaka, kukhululekile, futhi akuzinzile;

3. Izinto zokuxhuma azikhethwanga ngokucophelela, futhi azikwazi ukumelana nokugqwala kwento yokuxhumana kanye nokuguga komshini.

Isu lokulungisa

1. Ukuqinisekisa ukusebenza kahle, valaivalvukancane bese uyivula ngaphandle kokudlula indawo engenhla efile. Isondo lesandla kudingeka lijikiswe kancane emuva uma ivalvu isivuliwe ngokugcwele;

2. Kufanele kube ne-backstop ekuxhumekeni okunezintambo kanye nokuxhumana okuphephile phakathi kwengxenye yokuvala kanye nesiqu se-valve;

3. Izikhonkwane ezazisetshenziswa ukujoyinaivalvuIsiqu kanye nengxenye yokuvala kufanele zikwazi ukubekezelela ukugqwala okuphakathi futhi zibe nezinga elithile lamandla omshini kanye nokumelana nokuguguleka.

2. Ukuvuza kokupakisha (ngaphandleukuvuza kwe-valve,ukuvuza kokupakisha kuphakeme kakhulu).

isizathu:

1. Ukukhetha okungalungile kokupakisha; ukusebenza kwevalvu emazingeni okushisa aphezulu noma aphansi; ukumelana nokugqwala okuphakathi; ukumelana nokucindezela okuphezulu noma kwe-vacuum; 2. Ukufakwa okungalungile kokupakisha, okuhlanganisa amaphutha amancane okushintsha okukhulu, ukuxhumana okunganele okugoqekile okujikelezayo, kanye nengxenye ephezulu nephansi eliqinile;

3. I-filler isigugile, isiphelelwe yisikhathi, futhi ilahlekelwe ukuguquguquka kwayo.

4. Ukunemba kwesiqu se-valve kuphansi, futhi kuneziphambeko ezifaka phakathi ukugoba, ukugqwala, kanye nokuguguleka.

5. Indlala ayicindezelwa kahle futhi azikho iziyingi zokupakisha ezanele.

6. Indlala, amabhawodi, nezinye izingxenye zonakele, okwenza kube nzima ukuyicindezela indlala ngokuqinile;

7. Ukusetshenziswa okungasebenzi kahle, amandla angafanele, njll.;

8. Indlala igobile, futhi isikhala esiphakathi kwendlala nesiqu sevalvu sifushane kakhulu noma sikhulu kakhulu, okubangela ukuthi isiqu sevalvu siguge ngaphambi kwesikhathi futhi ukupakisha kulimale.

Isu lokulungisa

1. Izinto zokugcwalisa kanye nohlobo kufanele kukhethwe ngokusekelwe ezimweni zokusebenza;

2. Faka ukupakisha ngendlela efanele ngokuhambisana nemithethonqubo efanele. Indawo yokuhlangana kufanele ibe ku-30°C noma ku-45°C, futhi ingxenye ngayinye yokupakisha kufanele ibekwe futhi ihlanganiswe ngayinye. 3. Ukupakisha kufanele kushintshwe ngokushesha nje lapho kufinyelela ekupheleni kokuphila kwayo okuwusizo, kuguga, noma konakele;

4. Isiqu sevalvu esonakele kufanele sishintshwe ngokushesha ngemva kokugoba nokuguga; kufanele siqondiswe futhi silungiswe.

5. I-gland kufanele ibe nesikhala sokuqinisa esingaphezu kuka-5mm, ukupakisha kufanele kufakwe kusetshenziswa inani elibekiwe lokujika, futhi i-gland kufanele iqiniswe ngokulinganayo nangokulinganayo.

6. Amabhawodi, ama-gland, nezinye izingxenye ezonakele kumele zilungiswe noma zishintshwe ngokushesha;

7. Imiyalelo yokusebenza kufanele ilandelwe, isondo elinamandla elisebenza ngamandla ajwayelekile kanye nesivinini esihambisanayo;

8. Qinisa amabhawodi e-gland ngokulinganayo nangokulinganayo. Isikhala esiphakathi kwe-gland nesiqu se-valve kufanele sandiswe kahle uma sincane kakhulu, noma kufanele sishintshwe uma sikhulu kakhulu.

3. Indawo yokuvala iyavuza

isizathu:

1. Indawo yokuvala ayikwazi ukwakha umugqa oseduze futhi ayithambekile;

2. Isikhungo esingaphezulu soxhumano lwelungu olusuka esiqwini kuya esivalweni se-valve asiqondani kahle, sonakele, noma silenga;

3. Izingxenye zokuvala zisontekile noma azikho phakathi nendawo ngenxa yokuthi isiqu sevalvu siphazamisekile noma sakhiwe ngendlela engafanele;

4. Ivalvu ayikhethwanga ngokuhambisana nezimo zokusebenza noma ikhwalithi yezinto zokuvala ayikhethwanga kahle.

Isu lokulungisa

1. Khetha kahle uhlobo lwe-gasket kanye nezinto zayo ngokuhambisana nendawo yokusebenza;

2. Ukusetha ngokucophelela nokusebenza okulula;

3. Amabhawodi kumele aqiniswe ngokulinganayo nangokulinganayo. I-torque wrench kufanele isetshenziswe uma kudingeka. Amandla okuqinisa ngaphambi kokusebenzisa kufanele abe anele futhi angabi phezulu kakhulu noma aphansi kakhulu. Phakathi kwe-flange kanye nokuxhumeka okunentambo, kufanele kube negebe lokuqinisa ngaphambi kokusebenzisa;

4. Amandla kufanele afane futhi i-gasket ahlanganiswe kufanele ibe phakathi nendawo. Akuvunyelwe ukusebenzisa ama-gasket amabili kanye nokuhlanganisa ama-gasket;

5. Indawo yokuvala engaguquki isicutshunguliwe futhi igugile, yonakele, futhi isezingeni eliphansi lokucubungula. Ukuqinisekisa ukuthi indawo yokuvala engaguquki iyahlangabezana nezindinganiso ezidingekayo, kufanele kwenziwe ukulungiswa, ukugaya, kanye nokuhlolwa kombala;

6. Qaphela ukuhlanzeka lapho ufaka i-gasket. I-kerosene kufanele isetshenziselwe ukuhlanza indawo yokuvala, futhi i-gasket akufanele iwele phansi.