The General Pump Brass Regulating Valve - 45 GPM, 2500 PSI (CWR4525) has multiple connection points for easy installation, and is great for use in automatic car washes! It works perfectly with General Pump Emperor HTCK pumps, and protects against pressure spikes. Plus, a grease zerk keeps the piston and seal lubricated. This valve can handle flow rates up to 45 GPM and pressures up to 2500 PSI. Please note, that if this valve is installed with a positive displacement pump, the manufacturer recommends incorporating a safety relief device (not included).