He kūpono ka valve plug no ka ʻoki ʻana a me ke kahe ʻana i loko o ka pipeline, ma muli o ke ʻano maʻalahi, loaʻa iā ia ka pono o ka wehe wikiwiki ʻana a me ka pani ʻana. No kēia moʻo, hiki iā NSEN ke hāʻawi i ke ʻano eccentric, ke ʻano sleeve a me ke ʻano Inverted Pressure Balance Lubricated. Welina mai e hoʻokaʻaʻike mai iā mākou e kiʻi i ka hāʻawi a i ʻole e hoʻopilikino i ka valve no kāu papahana.