this kit is specifically designed for FVIR-equipped units from Rheem

it features a 48-frame diameter and is engineered to withstand the thermal stresses of continuous duty cycle operation

or B type flanges

Durable Construction: High-grade stainless steel valve trim and spring-loaded PTFE packing reduce maintenance requirements and prevent leaks

Designed for compatibility with various Carrier gas heating and cooling configurations

Nordyne 661030R Orifice 321894-708 this kit is specifically designedThe Nordyne 661030R Orifice is a precision engineered main burner orifice designed for specific gas fired furnace applications. Featuring a #30 drill size specification, this component is critical for maintaining the correct orifice flow rate and ensuring an optimal fuel to air ratio within the burner assembly. As a direct replacement for Nordyne 661030, this part eliminates compatibility guesswork during field service calls. For technicians servicing