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the D535 is specifically wound for 115V 60Hz operation
The Johnson Controls VG2231VM292NGGA is a heavy-duty 4-inch 2-way normally open flanged globe valve designed for precise flow control in demanding hydronic systems
The Reznor 209339 Spark Electrode (also identified as PSE-RZ9) is the direct OEM replacement engineered to deliver consistent high-voltage arcing to ignite the gas-air mixture across various unit heater and air handler platforms
You should always verify compatibility with your specific model number
Siemens Building Technology 274-03080 Control Valve Assembly 319825-402 the D535 is specifically woundThe Siemens 274 03080 Control Valve Assembly is a heavy duty solution for precise hydronic flow control in commercial HVAC systems. This 2 way normally closed modulating valve features a 2 inch NPT connection and is engineered with a 40 Cv linear flow characteristic to ensure stable regulation in air handling units and heat exchangers. Designed for seamless integration, the Siemens actuator accepts both 0 10 VDC and 4 20 mA control signals, operating
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