Part # 71-050B-1-40
Enclosure Package to prevent freezing in 1" NPT Fisher D4 Control Valve. 12 volt start. Single heater package with shutoff valve and thermocouple.
Catco enclosure packages are the most efficient form of freeze prevention on the market. By heating the valve or regulator itself instead of heating the gas, you get much better heat transfer than other methods:
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