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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
The York S1-025-27773-700 Flame Sensor is a critical OEM component designed for precise flame rectification in high-efficiency York gas furnaces and HVAC units
The 620-403 features universal mounting capabilities
Key Benefits for Technicians Universal Compatibility: Directly replaces 42AF35AF and other common DP series contacts from brands like Furnas and Square D
Thermal Durability: High-grade insulation resists wear and tear in high-heat zones
which is critical for maintaining accurate flow control in steam or chilled water systems
Watts 0556030 Valve The York S1-025-27773-700 Flame SensorThe Watts 0556030 (Series LFN36M1) is a high performance 1 2 inch vacuum relief valve engineered for critical protection in closed systems. Designed for water heater vacuum relief and low pressure steam service, this valve automatically vents to the atmosphere when a vacuum occurs. This action prevents negative pressure from siphoning the tank, which often leads to tank collapse or equipment burnout. Built with a lead free brass body and a low profile