Chidule

Ma valve a mpira oyikidwa pa trunnion amapangidwira kutseka pamwamba pa mtsinje. Kapangidwe ka mpando kamakhala ndi njira yodzitetezera yokha m'mabowo. Ma valve ali ndi maulumikizidwe a mpweya ndi payipi yotulutsira/kutulutsa mpweya m'bowo la payipi. Maulumikizidwe a mpweya ndi payipi yotulutsira madzi angagwiritsidwenso ntchito potsimikizira kutseka kwa payipi pa intaneti.

• Chitetezo pa Moto ku API 607

• Kapangidwe Kosasinthasintha

• Tsinde loletsa kuphulika

• Mpira Wokwera Trunnion

• Mpando Wodzaza ndi Kasupe Woyandama

• Kapangidwe ka Ma Block Awiri ndi Kutuluka Magazi (DBB)

• Thupi Logawanika, Kulowera Komaliza

Kapangidwe ndi Kupanga:API 6D, BS 5351
Maso ndi Maso:API B16.10, API 6D, EN 558, DIN 3202
Kulumikiza Komaliza:ASME B16.5, ASME B16.25, EN 1092, GOST 12815
Mayeso ndi Kuyang'anira:API 6D, EN 12266, API 598

NSEN ikutsatira mosamalitsa ntchito zokonza zaulere, kusintha kwaulere ndi kubwezeretsa kwaulere mkati mwa miyezi 18 valavu itatha ntchito zakale kapena miyezi 12 itatha kuyikidwa ndikugwiritsidwa ntchito pa payipi pambuyo pa ntchito zakale (ndipo imayamba poyamba). 

Ngati valavu yalephera chifukwa cha vuto la khalidwe panthawi yogwiritsa ntchito mapaipi mkati mwa nthawi ya chitsimikizo cha khalidwe, NSEN ipereka chitsimikizo cha khalidwe chaulere. Ntchitoyi siidzatha mpaka kulephera kukhazikika ndipo valavuyo ikugwira ntchito bwino komanso kasitomala atasaina kalata yotsimikizira.

Pambuyo pa nthawi yomwe yatchulidwa, NSEN imatsimikizira kuti idzapatsa ogwiritsa ntchito ntchito zaukadaulo zabwino pa nthawi yake nthawi iliyonse yomwe chinthucho chikufunika kukonzedwa ndi kusamalidwa.