Bell & Gossett 107035 HT-3/4 Hydro-Trol flow control valve, 3/4" size, for hydronic heating and cooling systems. Regulates flow in closed-loop HVAC applications to maintain system balance and efficiency. Durable construction for reliable performance in commercial and residential hydronic installations.

Bell & Gossett model HT-3/4" threaded, hydrotrol with a combination straight or angle-pattern flow-control valve. Can be installed vertically or horizontally. Its ductile iron body is rated to 150 psi and 250°F. Hydrotrol valves prevent overheating of zones due to gravity flow in hydronic heating systems and permit operation of indirect water heaters in both summer and winter. The HT valve allows fluid to pass when the pumps start. When the system or zone pumps are not operating they remain closed preventing gravity circulation. See performance curve for your exact flow rate.




Hydrotrol Flow Control Valves




· Prevents rooms (zones) from overheating due to gravity circulation.

· Elastomer seal provides positive, shutoff eliminating the need for an isolation valve.

· Brass body and non-ferrous internals.

· Straight-Angle configuration allows for quick and easy installation.

· Vertical design option saves installation time and material.

· ½ turn knob for system draining or valve bypass.
· Compact, light weight design.



Operating Data

Maximum working pressure . . . . . 150 psi (10 bar)

Maximum operating temperature. . . 250°F (121°C)








APPLICATIONS:


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 heater