4Boats
Seaflo 21 Series Water Pump Pressure Switch 40PSI 15A PSWT15A21S40PSI Replacement
Seaflo 21 Series Water Pump Pressure Switch 40PSI 15A PSWT15A21S40PSI Replacement
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Seaflo 21 Series Pressure Switch (40 PSI)
Premium Replacement Part: PSWT15A21S40PSI
This genuine Seaflo 21 Series Pressure Switch is the ideal replacement for restoring the automatic on-demand functionality of your marine or RV water pump. Precision-calibrated to shut off at 40 PSI (2.8 bar), this heavy-duty switch ensures your system maintains consistent pressure without the need for manual operation.
Key Features
- ✔ Direct fit for Seaflo 21 Series pumps
- ✔ High-grade 15A heavy-duty micro-switch
- ✔ Precision 40 PSI (2.8 Bar) shut-off
- ✔ Marine-grade corrosion resistance
- ✔ Easy 2-wire field replacement
Technical Specs
| SKU / MPN: | PSWT15A21S40PSI |
| Voltage Compatibility: | 12V / 24V DC |
| Max Amperage: | 15 Amps |
| Pressure Setting: | 40 PSI (2.8 Bar) |
| Lead Wire: | 18 AWG, ~13" Length |
Compatibility / Fitment Guide
| Make/System | Model/Application | Notes |
|---|---|---|
| Seaflo 21 Series | SFDP1-010-040-21 | 12V Direct Replacement |
| Seaflo 21 Series | SFDP2-010-040-21 | 24V Direct Replacement |
| Seaflo 21 Series | DP1-010-040-21 / DP2-010-040-21 | Compact 2-Chamber Pumps |
OEM Cross Reference
| Seaflo Internal Code: | PSWT15A21S40PSI |
| Chandlery Reference: | 831063-40PSI |
| Legacy Part Num: | 21S-40PSI |
Questions & Answers
Is this a genuine original part?
This is a premium quality replacement part manufactured by Seaflo to meet the exact performance and fitment requirements of the 21 series pump range.
How do I know if it is compatible?
Verify the model number of your pump; if it begins with "SFDP" or "DP" and ends in "21", and your original switch was rated for 40 PSI, this is the correct replacement. Matching the PSI rating is vital for your plumbing's safety.
Can this switch be used with 24V pumps?
Yes. This switch is universally compatible with both 12V and 24V Seaflo 21 series models, as it is rated to handle the current of either configuration.
Note: Please ensure your pump is disconnected from the power supply before attempting any replacement of the pressure switch. Target domain: 4boats.co.uk.
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