- If a strainer cannot withstand high temperatures or differential pressures, it could come apart and cause damage to equipment.
- The expected pressure drop across the strainer should not cause the downstream operating pressure to fall below the minimum required pressure of the line e.g. NPSH for a pump.
- The perforations of the strainer should be slightly smaller than the smallest piece of debris that is expected to flow through it.
- If the perforations are too small, a high pressure drop could develop across the strainer and cause it to fail.
