Siemens Building Technology 257-02031 Control Valve Assembly 318423-701 this component features a 3/8-inch

this component features a 3/8-inch suction and 1/4-inch liquid connection

a 120V relay for exhaust fan control

The Copeland 971-0561-63 typically functions as an automatic reset device

5 to 3 duct diameters of straight duct before the inlet is recommended

the 356-0750 provides the reliable mechanical feedback necessary for pneumatic building automation systems

Siemens Building Technology 257-02031 Control Valve Assembly 318423-701 this component features a 3/8-inchFor veteran mechanical contractors managing commercial hydronic systems, the Siemens 257 02031 provides a reliable, field proven solution for precise fluid regulation. As a core component of the Powermite 599 MT Series, this 2 way normally open pneumatic control valve is engineered for terminal units, hydronic heating coils, and chilled water applications. The assembly integrates a high performance 1 2" brass globe valve with a 2 inch pneumatic