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Verify your control voltage at the thermostat or transformer before installation
ensuring standardized fitment and performance in Carrier
This 120V 3-way zone valve features a rugged forged brass body with a 3/4 inch inverted flare connection
Direct OEM Match: Fully compatible with Lochinvar and A
AERCO Boiler and Water Heater 18557-1 Tstat 326058-758 Verify your control voltage atThe AERCO 18557 1 Pneumatic Bulb Thermostat is a critical OEM replacement part designed specifically for AERCO boiler and water heater systems. This RA 20 240 thermostat utilizes advanced pneumatic sensing technology to ensure the precise temperature regulation required for commercial heating environments. By providing dependable sensing through its bulb style design, the 18557 1 Tstat maintains peak efficiency and prevents the energy waste associated
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