Waste Oil Heater, Furnace or Boiler Metering Pump. Adjustable BTU output. This is an adjustable rpm pump, just like the one sold with our Clave Burners. This pump will work with any Waste Oil burner. In case yours uses J-pump or A2RA-7736, 37, 40, 47 , that run at 1725 RPM and a Pressure Regulator, the pressure regulator must be eliminated. Pump head itself is an equivalent to Suntec A2RA-7710. An adjustable RPM pump that works with wide range of Burners. Ask questions before buying if not sure. I am available 24/7, almost. Comes with a tube of sealant. This is the only kind of sealant that is recommended for use on the Suction side of the pump, all the way to the tank, on all threads. Any sealant can be used on the pressure side of the pump, worst that can happen there, -you will see the leak. On the suction side it will draw air in the oil. No way to find the leak on the suction side. Pump MUST be mounted in the position pictured. Will not work in any other position.