Manufacturer Name: ASCO Product Number: 8215G33 OEM Part Number: 8215G33 Product Description: 3/4"N/O Ventvlv 0/125# 120V Weight:1.5lbs/680.39g The ASCO 8215G33 is a 3/4-inch normally open vent valve for precise fluid control in HVAC systems. It has a pressure rating of 0-125 psi and operates on 120 volts. By modulating the valve's opening and shutting with a coil. https://www.partshnc.com/8215g33-asco-34-no-ventvlv-0125-120v