Trying to identify a water pump, strainer or backflow valve under an RV sink or near the fresh-water tank? First determine whether you are looking at the onboard tank-fed pumping circuit or the city-water connection. They feed similar fixtures but use different components. This reference uses SHURflo model numbers, original simplified drawings and existing UsedRVParts product photos to help narrow down an exact replacement.
Which water source does the component serve?
Onboard tank and pump
The pump takes stored water and supplies pressure when a fixture opens. A suitable mesh strainer helps prevent grit from entering the pump.
Campground or household hookup
The city-water supply is pressurized externally; the onboard demand pump is not the device that produces pressure for this path.
Accumulator versus check valve
An 182-200 accumulator is an optional pressure-storage component for an appropriate pressure-switch pump system. The SHURflo 4008 Revolution incorporates a bypass function and Pentair says an accumulator is not required for that model. An accumulator is not a filter, and it does not replace the inlet strainer.
A 340-001 check valve allows flow in one direction in a suitable hose-barb connection. It is a separate part; the SHURflo regulated city inlet already includes a check valve. Match the exact existing valve or plumbing requirement rather than adding extras automatically.
Use the SHURflo part number for identification
| Part number | What it is | Identification detail |
|---|---|---|
| 4008-101-E65 | Revolution demand pump | 12V DC; 3 GPM; 55-PSI shut-off; integral bypass |
| 255-313 | 50-mesh pump-inlet strainer | 1/2-in NPSM fittings; cleanable mesh bowl |
| 183-029-14 | Regulated city-water inlet | 65-PSI regulated; built-in check valve; chrome finish |
| 182-200 | Pressure accumulator | For suitable pressure-switch systems; not required by 4008 |
| 340-001 | One-way inline check valve | 1/2-in hose-barb connection |
Matching a model number is more reliable than assuming two similarly shaped pump or valve components have the same ports, voltage or installation requirements.
Compare exact SHURflo catalog photos
These five product records are listed on UsedRVParts. Compare the part markings and the current product photos, then open the listing to check availability and condition. Product viewing or pickup in Kelowna, where offered, is by appointment.
Factory diagrams and installation references
For pump connections and the required strainer, consult the SHURflo 4008 manufacturer installation sheet. Pentair's 182-Series accumulator instructions show permitted downstream arrangements. Match fittings and valves against Pentair's strainer references and the model-specific 183-029-14 city-water entry.
Explore more freshwater system guides
Follow the part of the plumbing system you are working on. These detailed references help identify components, sizes and model-specific replacement parts.