Hydrotrol Flo Control Valves

107035 Bell & Gossett 3/4" NPT Bronze HydroTrol Flow Valve. The Hydrotrol (HT) flow control valve is used to prevent overheating of zones due to gravity flow in hydronic heating systems and will permit summer-winter operation of indirect water...

107037  Bell & Gossett Bronze HydroTrol Flow Control Valve 1" NPT. The Hydrotrol (HT) flow control valve is used to prevent overheating of zones due to gravity flow in hydronic heating systems and will permit summer-winter operation of...

107038 Bell & Gossett 1-1/4" NPT Bronze HydroTrol Flow Valve. The Hydrotrol (HT) flow control valve is used to prevent overheating of zones due to gravity flow in hydronic heating systems and will permit summer-winter operation of indirect water...