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Taco 5421 is a non-electric straight through zone valve designed with a half-inch female IPS and half-inch male union nut and nipple connections. This valve is suitable for use with remote operators or built-in operators. When using the built-in operator, install the valve so that the sensor is positioned on the side instead of the top to avoid heat affecting the temperature sensor.
This valve provides reliable control for hydronic heating systems. Its simple operation makes it a preferred choice among HVAC professionals.
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