836-837 Tandem
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Multifunctional gas control with two automatic shut-off valves, servo pressure regulator and electric modulating device controlling the main gas flow. The plungers of the automatic shut-off valves are protected by an oil bath allowing particularly silent operation of the valves. Pilot outlet flow and minimum and maximum main outlet pressure adjustment are available.
836: 2 levels modulation 837: full modulation
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