Ua hoʻokumu ʻia ʻo NSEN i ka makahiki 1983, ka mea kūikawā i ke kahua o nā kīwaha butterfly eccentric.Ma hope o nā makahiki o ka ʻimi ʻana a me ka hoʻomaʻamaʻa, ua hoʻokumu ʻia ka moʻo huahana i lalo nei:

• Kiwikā lele lele kolu
• Kiʻekiʻe hana kiʻekiʻe lele valve
• Metala a me ka metala lele lele
• -196 ℃ kiwi lele lele cryogenic
• Kiʻekiʻe wela ahi pale pelepepa valve
• Puka lele lele
• Kiwikā lele lele kūʻē i ka wai kai

Ma ka ʻoihana ʻoihana, e nānā i nā valve lele.Ke hoʻomaikaʻi mau nei ʻo NSEN i kona mau pono ponoʻī a hōʻoia i kona ikaika.

• Pūnaehana hōʻoia

CE (PED)

ISO 9001

ISO 14001

ISO 45001

• Palapala Hooiaio Ahi

API 607

• Palapala Hoʻokuʻu Haʻahaʻa

API 641

ISO 15848-1

TA-LUFT

• Palapala hōʻoia Lūkini

TR CU 010 / 032

• TPI hōʻoia hōʻoia

Cryogenic -196 Butterfly Valve Hōʻike Hōʻike

Hōʻike hoʻāʻo ʻo Neutral Salt Spray (NSS).

Hōʻike hoʻāʻo Intergranular Corrosion (IGC).