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a restricted metering device
Durable Construction: Built to withstand the high-cycle environments of modern high-efficiency heating systems
Always check the rating plate on your water heater
Auto-Reset Functionality: Eliminates nuisance lockouts by automatically re-engaging the circuit after the system cools
Look for "hissing" at the actuator housing or a damper that fails to reach its full stroke despite receiving full signal pressure
Johnson Controls P233A-4-AHC Pressure Switch 319848-301 a restricted metering deviceJohnson Controls P233A 4 AHC Differential Pressure Switch, 0 5 Mbar to 4 Mbar Range, < 0. 3 Mbar Differential, SPDT
