Manufacturer Name: Siemens Building Technology Product Number: 257-02035 OEM Part Number: 257-02035 Product Description: 1/2"Fxum N/O 1.0Cv 3-8#Vlvassy Weight:1.58lbs/716.68g The Siemens 257-02035 is a 1/2” valve assembly used in HVAC systems. This valve assembly is made of brass and the flow coefficient of this valve is 1. 0CV that effectively controls the fluid flow. The spri... https://www.partshnc.com/12fxum-no-10cv-3-8vlvassy