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I have a Chiller system that has a load side water flow of 270gpm. The PVC piping is 4". The Spears brand Y strainer is also 4" PVC,but the strainer is only rated at 168gpm.The circ's pressurers are 22psig in and 43psi out.The strainer screen had been removed years ago.If the screen was in place what would some of the issues be? Cavitation? Damage to the strainer body?Noise? Reduced water flow ? Would the water velocity increase thru the strainer? Would the strainer be ripped apart and the debris sent out into the water circuit.?Would the circ's impeller be damaged by any cavitation caused by the strainer? The strainer is on the return side of the circ.Would the circ's pressure be affected? I am concidering upsizing the strainers to 6".