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The Roth 2335000191 is a sealed oil tank gauge designed specifically for use with 400 gallon oil storage tanks. This gauge is a direct replacement for the older part number 1135000191, making it the correct choice for technicians and contractors who need a compatible upgrade or service replacement. The 2335000191 connects via a 2 inch male fitting and uses a rubber O-ring seal to create a secure, leak-resistant connection at the tank opening. This design helps prevent fuel vapors from escaping and keeps moisture and contaminants out of the tank.
The gauge must be used with one of the plastic adapters that are provided with the Roth tank. This adapter compatibility is an important installation detail. Technicians should confirm the correct adapter is in hand before beginning installation. The gauge must be hand tightened only. Using tools to tighten this fitting can damage the threads or crack the housing, leading to leaks or gauge failure.
Inside the gauge, a string and float mechanism tracks the oil level as the tank fills and empties. The float rises and falls with the fuel level, moving the indicator on the gauge face. When servicing or installing this gauge, the string and float must be released slowly. Releasing them too quickly can damage the internal gearing and cause the gauge to read incorrectly.
Heating oil technicians, fuel delivery professionals, and HVAC service contractors rely on accurate tank gauges to monitor fuel levels and schedule timely deliveries. The Roth 2335000191 is built for dependable use in residential and light commercial heating oil applications. It is a common service part for Roth double-wall oil storage tank systems.
The Roth 2335000191 sealed oil tank gauge is a direct replacement for part number 1135000191, offering a reliable and properly fitted fuel level monitoring solution for 400 gallon Roth heating oil tanks. Correct installation with the included plastic adapter and careful handling of the string and float assembly ensures long service life and accurate readings.
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