SHURflo 255-313Twist-on · 1/2-inch pipe inlet
View productSHURflo 4028-100-E54 RV Water Pump Parts & Exploded Diagram
The SHURflo Revolution 4028-100-E54 is a 12-volt, four-chamber diaphragm pump used in RV fresh-water systems. It has a rated open flow of 2.3 GPM and a 50 PSI pressure-switch shutoff. If you are replacing the entire pump or servicing its head, start by checking the complete number on the pump label: the similarly shaped 4008-101-E65 uses several different internal parts.
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4028 pump exploded drawing
The manufacturer's exploded drawing below identifies the upper housing, valve assembly, drive assembly and motor. The full pump data sheet also gives the model's electrical and pressure specifications.
Open the full SHURflo 4028 parts drawing (PDF)
Replacement component numbers
| Drawing reference | Component | SHURflo part number |
|---|---|---|
| 1 | Upper housing assembly | 94-802-00 |
| 2 | Valve assembly | 94-800-01 |
| 3 | Drive assembly | 94-802-02 |
| 4 | Motor | 94-11-302-00 |
| 1, 2 and 3 together | Pump head assembly | 94-800-14 |
| Not shown | Check valve | 94-800-03 |
The pump is also identified as 4028-100-A54 in original equipment installations. Match the full label and repair-component number before replacing a housing, drive or electrical part.
4028-100-E54 pump specifications
- Power: 12 V DC
- Rated open flow: 2.3 GPM (8.7 L/min)
- Pressure-switch shutoff: 50 PSI
- Ports: 1/2-inch-14 NPSM male
- Pump: Four-chamber diaphragm design with internal bypass
- Recommended fuse: 7.5 A
- Dry priming: Up to 6 feet (1.82 m)
- Size: 8.1 × 4.9 × 4.3 inches (206 × 125 × 110 mm)
Protect the inlet with a serviceable strainer
A suction-side strainer catches sediment before it enters a fresh-water pump. SHURflo offers the following 255-series fitting choices for 1/2-inch pump-port systems. Select the inlet type to suit your existing water line, and check connection style and available clearance before ordering.
SHURflo 255-313
SHURflo 255-315Swivel nut · 1/2-inch pipe inlet
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SHURflo 255-325Swivel nut · 1/2-inch hose-barb inlet
View productSee the SHURflo 255-series strainer comparison and parts drawing for the complete fitting chart.
More SHURflo pump parts references
For the 3 GPM pump, see the 4008 Revolution repair-parts guide. For the larger 4 GPM model, use the 4048 high-flow pump parts drawing. Both models have different repair-part combinations from the 4028.
Complete pump and a matching service part
SHURflo 4028-100-E54 Complete PumpComplete 12V fresh-water pump
2.3 GPM rated open flow · 50 PSI shutoff
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SHURflo 94-800-03 Check ValvePump-head repair component
One-way valve component identified in the 4028 repair drawing
View productThe 94-800-03 check valve is listed for the 4028-100-A54/E54 on the SHURflo pump's technical drawing. It is an internal service part, not a replacement pump head.
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