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"Y" strainers should be installed in a horizontal line or a vertical line with the flow going down. Basket strainers should be installed in a horizontal line. In both styles room must be allowed for screen removal. Ideally, pressure gauges should be installed upstream and downstream of a strainer to indicate pressure drop caused by a partially plugged screen.
Determine how long it takes for the screen to become approximately 1/3 plugged and remove and clean at the same time interval, or when the pressure gauges, if installed, indicate a pressure drop across the strainer. If a "Y" strainer has been provided with a blow-down valve on the drain connection then it may be opened to blow down sediment.
A spare screen and cover gasket are the only parts required to refurbish a strainer. A spare screen will decrease shut-down time while the plugged
screen is being cleaned. |
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