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Refined Switching Logic: Optimized for 24V heat pump systems
While many Sporlan O series valves support bi-directional flow
Broad Gas Compatibility: Approved for use with natural gas and LP gas mixtures
Steam Rated Durability: Specifically calibrated as a two-position steam zone valve
when brazing the 3/8-inch connections
Laars Heating Systems E2347400 Sensor 321142-301 Refined Switching Logic: Optimized forThe Laars E2347400 Outdoor Temperature Sensor is a critical NTC (Negative Temperature Coefficient) thermistor designed for high precision environmental monitoring in residential and commercial hydronic heating systems. As a genuine OEM replacement part, this 10k ohm sensor facilitates outdoor reset control, allowing the boiler to automatically adjust its water temperature based on ambient conditions. This weatherproof outdoor sensor delivers real time