Siemens Building Technology 257-02035 Valve Assembly 320788-702 This technical kit is engineered

This technical kit is engineered specifically for reverse acting actuators and is used to replace the legacy Gradutrol relay with a modern positive positioner

it maintains the precise static pressure needed for the furnace inducer motor to operate within its technical parameters

Automatic reset functionality eliminates the need for manual intervention after the system cools

the Watts N36 vacuum relief valve features a silicone disc and a 302 stainless steel spring

Common Questions What are the symptoms of a failing T111850040 valve

Siemens Building Technology 257-02035 Valve Assembly 320788-702 This technical kit is engineeredThe Siemens 257 02035 is a 2 way normally open pneumatic valve assembly designed for precise flow control in HVAC terminal unit applications. This 1 2 inch assembly features an NPT x Union Male connection and an equal percentage flow characteristic with a 1. 0 Cv rating, ensuring stable modulating control in water or steam systems. Constructed with a forged brass body and durable brass trim, the unit is engineered for long term reliability under