Pay in 4 interest-free payments of $25.16 Learn more
Ships within 48 hours · Estimated delivery Sep 13 - Sep 18
though always check for system pressure limits
digital round thermostat designed for precision control in 2-wire heat only systems
Standard 325 series regulators are designed for indoor use
It handles a wide performance range
McDonnell & Miller 310447 Valve 30067439-890 though always check for systemThe 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