Siemens Building Technology 257-02055 Valve Assembly 323613-751 When pressure increases due to

When pressure increases due to closing zones

and ensure a dry nitrogen purge to prevent oxidation inside the lines

it ensures precise fitment and restores factory-spec heat staging in AAON air handlers and rooftop units

or mechanical stress from improper wire tensioning

Siemens Building Technology 257-02055 Valve Assembly 323613-751 When pressure increases due toThe Siemens 257 02055 Valve Assembly is a high performance 2 way normally open valve designed for precision control of hot or chilled water and low pressure steam in terminal units. Built on the rugged Powermite 599 MT Series platform, this assembly features a 1 2 inch NPT connection and a 2. 5 Cv flow coefficient. The forged brass body is paired with stainless steel trim to ensure long term durability and resistance to scaling in demanding hydronic