APPLICATION: Demand regulator kit with twin-stage pressure reducing regulatorAllows you to run a propane/natural gas engine (unit should already have an alternative fuel mixer)on a line pressure of 250psi. Kit will support up to 35kw generators INCLUDES: Pressure regulator to take 250psi down to 0.5psi (13"wc)Demand regulator to control fuel flow to the mixer FREE SHIPPING TO THE LOWER 48 STATESWe have thousands of parts in stock, if you do not see the part you need!Feel free to ask us about conversion kits for almost anything including trucks, cars, generators, tractors, boats, motorcycles, RVs etc. We can build a kit to convert almost any engine! WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the state of California to cause cancer. www.P65Warnings.ca.gov. WARNING: These products contain a chemical known to the state of California to cause cancer and birth defects or reproductive harm. www.P65Warnings.ca.gov.