Manufacturer Name: Carrier Product Number: EF33CW201 OEM Part Number: EF33CW201 Product Description: 24V 3.2" Wc 3/4"X1/2" 2Stg Vlv Weight:1.62lbs/734.82g The Carrier EF33CW201 is a 24-volt, 3.2-inch water column Wc, two-stage gas valve with a 3/4-inch by 1/2" design. This essential part of HVAC systems is made to precisely control the flow of natural gas. This two-stage gas valve, which is commonly seen in furnaces and other heating apparatuses, enables effective control of gas flow during combustion. The proper management of heating is ensured by the valve's design, which also contributes to energy savings and stable indoor comfort. It fits certain HVAC system layouts thanks to its 3/4-inch by 1/2-inch dimensions. The Carrier EF33CW201 gas valve is a crucial part of enhancing HVAC system performance, which includes accurate gas flow management, better energy efficiency, and dependable performance.