700-053 Invensys Robertshaw 700-053 Two Stg Spark Ign Gas Vlve 24V Universal 2 Stage Combination Gas Valve. For Use On Int. Pilot Direct Spark And Hot Surface Systems. 24V. 3/4 X 3/4 Npt300000 Btu. Regulator Setting: Low 1.3 High 3.5 Wc. Slow Opening.
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