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Broad Compatibility: Optimally sized for 3/8" stems used in 2
this freeze protection thermostat ensures comprehensive coverage across large coil faces
With a 600VAC rating and an electrical life cycle tested for 250
Standard 325 series regulators are designed for indoor use
It handles a wide performance range
McDonnell & Miller 310447 Valve 30067439-890 Broad Compatibility: Optimally sized forThe McDonnell & Miller 310447, specifically the Model 14 B Blow Down Valve, is a high performance full port ball valve engineered for critical maintenance of hydronic heating systems. Designed as a direct replacement for McDonnell & Miller Series 47, 67, and 70B boiler controls, this 14 B valve facilitates the essential "blow down" procedure required to flush sediment and ensure the reliability of low water cut off mechanisms. Featuring a 3 4" NPT
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