It is not intended to be sold or used for any other purpose. Check "Reid Vapor Pressure" in Wikipedia, or similar. Holley Fuel Pressure Regulator Rebuild 12-804 - YouTube 0:00 / 37:53 Holley Fuel Pressure Regulator Rebuild 12-804 DurocShark 309 subscribers Subscribe 10K views 3 years ago I walk through. if you were packing them in boxes they would look identical. Holley 12-804 Holley Fuel Pressure Regulators JEGS 41040 JEGS Fuel Pressure Gauges Now you need fittings. The seller gratefully sent me a replacement part but the result was the same. Easy to read. See Standard conditions for temperature and pressure - Wikipedia, the free encyclopedia. Walk back over and looked again, 9lbs. For cars that require 4.5 to 9 PSI, the Holley 12-803 is the right model. . ${cardName} unavailable for quantities greater than ${maxQuantity}. Can Boiling Point of Gas Be Raised? - Discussion Forums [endif]-->