Siemens Building Technology 257-02055 Valve Assembly 326058-755 preventing hazardous mismatches with other

preventing hazardous mismatches with other fuse classes during field replacement

pneumatically-operated direct acting thermostat engineered for precise temperature control in demanding commercial HVAC environments

By integrating advanced SMART SYSTEM boiler control circuitry

replacing HH12ZA178 and HH12ZA178A exactly

the Field Controls 46264901 provides forced-air induction

Siemens Building Technology 257-02055 Valve Assembly 326058-755 preventing hazardous mismatches with otherThe 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