No. 23 - Boiler Check Valve .625 plus 1%

This is a model of a Hancock Double Vertical Check Valve.  This valve is designed to be a passive feed water inlet fitting for mounting on top of the boiler.  This valve does not have working internal check valves but does have internal passages for allowing water to be fed into the top of the boiler from both of the water feed pipes coming from the tender.  External working check valves are not included but should be provided by the modeler somewhere between the tender water supply tank and the inlets of this Hancock valve.  The inlet and discharge connections are sized for cutting 3/16-40 ME external threads.