Description
The Hydrotherm BM-7989 is a 3/4-inch, two-stage natural gas valve engineered for dependable gas flow control in hydronic heating applications. Designed as a direct OEM replacement for compatible Hydrotherm boiler systems, this valve delivers precise, staged gas modulation to support efficient combustion and consistent heat output across varying load demands.
Two-Stage Operation
The two-stage design allows the valve to operate at a reduced first-stage rate before opening fully to second-stage capacity. This staged approach improves combustion efficiency, reduces thermal shock to the heat exchanger, and supports quieter, more stable burner operation compared to single-stage alternatives.
LP Conversion Kit Included
This valve ships complete with a liquefied propane (LP) conversion kit, providing the flexibility to configure the valve for either natural gas or propane-fired applications without sourcing additional components — ideal for service technicians and contractors working across multiple fuel types.
Key Features
- 3/4″ inlet/outlet connection size
- Two-stage gas valve for modulated burner control
- Factory-configured for natural gas operation
- Includes LP conversion kit for propane applications
- OEM replacement part for compatible Hydrotherm boiler systems
- Supports efficient, low-noise staged combustion
Application
The BM-7989 is intended for use in Hydrotherm hydronic boiler systems requiring a 3/4″ two-stage gas valve. Always verify compatibility with the specific boiler model and consult local codes and the manufacturer’s installation instructions before installation. Installation should be performed by a qualified HVAC/R technician or licensed gas fitter.
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