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1. PSI and GPM Ratings Look for models with a PSI (pounds per square inch) rating between 1200-2000 for safe and effective car washing. A higher PSI might be too aggressive and could damage the paint. The GPM (gallons per minute) indicates how much water the unit can deliver; a higher GPM leads to better cleaning efficiency.
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The primary function of a gas pressure reducing valve is to decrease and stabilize the pressure of a gas entering a system. When gas flows from a high-pressure source, such as a gas main, to a lower-pressure distribution system, the PRV adjusts the pressure to a predetermined level suitable for the downstream equipment. The valve operates on the principle of a diaphragm mechanism, where changes in downstream pressure result in adjustments to the valve opening, maintaining the desired output pressure.