RL12S-D
2Pages

Model Number RL12S-D 2:1 Ratio Air Pressure Booster With 12 Gallon Receiver Tank and Secondary Discharge Regulator The Bootstrap Compressor is an air-driven, air pressure booster. It requires no electricity, cooling water, or air-line lubricator and is explosionproof. Shop air is fed to the inlet port through a filter, and is split into two streams inside the booster. One stream flows to the compressor portion of the unit and is boosted to higher pressure. The other stream drives the compressor portion, and is consumed during booster operation. The drive air stream is regulated to maintain the discharge pressure set by the external regulator handle. Drive air consumption is approximately 1/2 to 1 times the amount of pressure-boosted air. For example, if 2 scfm of high pressure air is required, the Bootstrap Compressor will need 3 to 4 scfm of shop air, and 1 to 2 scfm of that air will be vented through an exhaust silencer. For a given shop air pressure, Model RL12S-D can deliver high pressure air at any flow rate up to the maximum shown on the flow curves below. The pressure regulator enables the booster to adjust automatically to changes in high pressure air demand or shop air pressure. When there is no demand for high pressure air, the booster stalls at the discharge pressure set by the regulator and consumes no energy. When there is a need for high pressure air, the pressure drops which causes the booster to restart automatically. MODEL RL12S-D FEATURES A. Inlet Pressure Gauge B. Built-in Pressure Regulator 
 C. Tank Pressure Gauge
 D. 1/2” FNPT Shut-off valve E. Discharge Regulator F. ASME Safety Valve, 235 psig G. 12 Gallon, 235 psig ASME tank H. Discharge Pressure Gauge I. 1/4” FNPT Inlet Filter J. Exhaust Silencer K. 1/4” FNPT Condensate Drain Valve L. Four 1/2” diameter mounting holes
 Midwest Pressure Systems, Inc. 850 Transport Drive, Valparaiso, IN 46383 Phone 219-462-0070 M I D W E S T 2" Square PRESSURE www.midwestpressuresystems.com SY S T E M S MODEL RL12S-D SPECIFICATIONS • Maximum 2 to 1 boost ratio • Capable of 100% duty cycle • Inlet pressure range of 15-150 psig • Discharge pressure range of 15-230 psig • Temperature range of 40-130˚F •

Model RL12S-D Flowrate vs Supply and Discharge Pressure 235 Maximum Allowable Pressure of 230 psig Discharge Pressure in psig 205 130 psig supply air 190 110 psig supply air Flowrate in scfm Use the curves above to determine the Model RL12S-D air pressure booster maximum discharge flow rate for a given set of operating conditions. In the example shown above, a maximum discharge pressure of 160 psig is desired and 90 psig available. MPS160 psig line until itsupply air iswith the Follow the intersects 90 psig supply air curve. Draw a vertical line from the intersection down to the bottom line...