Description
The Maxitrol M511B is a high-precision modulating gas valve designed for use in advanced heating systems, especially in the Maxitrol Selectra series. With a ¾″ NPT connection and vent taps on both sides, it enables precise, instantaneous flame modulation without requiring moving butterfly components or external mechanical actuation. This valve is engineered for stable control in direct‑fired, negative pressure systems, capable of delivering consistent performance across load changes and gas supply fluctuations.
Specifications:
- Size: 3/4″
- Used With: Series 14, Series 44
- Max Pressure: 1/2 psi
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