SHURflo 255-Series Water Pump Strainers: Connection & Parts Diagrams

Protect your RV water pump from sediment with a cleanable SHURflo 255-series inlet strainer. These four models share a 50-mesh stainless-steel screen and a transparent bowl, but their plumbing connections are different. Choose by both the incoming water line and the pump inlet connection—not simply by the shape of the clear bowl.

Which inlet and outlet do you need?

The manufacturer uses different aftermarket and OEM identifiers for the same design variants. The first two models have twist-on pump connections; the other two use female swivel outlets.

Construction: polypropylene upper housing, nylon bowl, EPDM gasket and 50-mesh T-304 stainless-steel screen. These strainers are designed for pump-inlet service, with a maximum water temperature of 120°F (48°C).

Four-part strainer assembly diagram

The manufacturer’s numbered drawing identifies the removable components in the strainer assembly. Open the diagram to compare the model shapes and the positions of the internal parts.

View 255-series illustrated parts sheet (PDF)

Pentair/SHURflo assembly drawing, port specifications and four model photographs. Select the image below to enlarge the numbered drawing.

Cleaning the clear strainer bowl

1. Switch off electrical power to the pump. Relieve and drain the water from the system.
2. Unscrew the clear bowl counterclockwise and remove the screen.
3. Rinse sediment from the screen and bowl, then inspect the gasket and housing for damage.
4. Reinstall the screen and gasket; screw the bowl clockwise onto the upper housing.
5. Restore water and power and inspect the fitting and bowl seal for leaks.

SHURflo 255-series installation and maintenance instructions (PDF)

Related freshwater pump parts

These are separate pump-system components, not replacement parts for the strainer itself. Check the connection and application before purchasing.

SHURflo 4008-101-E6512V Revolution freshwater pumpPump shown as a separate component; match inlet before ordering.View productSHURflo 94-591-01Flexible pump silencing hose kitFor reducing transmitted vibration at suitable pump plumbing connections.View product

Need to identify another SHURflo pump service component? View the SHURflo Revolution 4008/4028 parts reference.

Browse all SHURflo pump parts diagrams by model

SHURflo 255 strainers with product photos

SHURflo 255-313Twist-on • threaded inlet½-inch NPSM male inlet · NPSM pump connectionView productSHURflo 255-323Twist-on • hose-barb inlet½-inch straight hose-barb inlet · NPSM pump connectionView productSHURflo 255-315Swivel nut • threaded inlet½-inch NPSM male inlet · female swivel pump connectionView productSHURflo 255-325Swivel nut • hose-barb inlet½-inch straight hose barb · female swivel pump connectionView product