offering identical physical dimensions and electrical ratings for a drop-in fit

Johnson Controls CVR17A-621R Metal Cover

Engineered for a secure connection to standard 1/4" OD pilot tubing

this component replaces worn or sticking diaphragms that often lead to system lockout during heating cycles

preventing the common alignment issues found with generic alternatives

Nordyne 663864R Service Valve offering identical physical dimensions andThe Nordyne 663864R Service Valve is a technical grade 3 4" low side suction line valve engineered for critical field replacements in split system air conditioning and heat pump units. As a direct successor to legacy part numbers 663575, 663992, and 663992R, this component ensures full mechanical compatibility with older Nordyne, Intertherm, and Miller HVAC platforms. This HVAC service valve replacement features a robust brass construction designed to