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files/DankoffSlowPump.png
The Dankoff Solar SlowPump is a proven low‑power surface pump engineered for long‑distance, high‑lift water delivery in off‑grid environments. First introduced in 1983, it remains one of the most reliable solar‑direct pumping solutions available, with thousands of installations worldwide. Designed for shallow water sources and capable of pushing water up to 450 vertical feet, the SlowPump delivers dependable performance with extremely low energy requirements.
Built with a forged brass rotary vane mechanism and stainless steel/carbon‑graphite internals, the SlowPump is designed for long service life, easy maintenance, and consistent operation in remote systems. Wear parts typically last 5–10 years, with an overall life expectancy of 15–20 years before rebuild.
Key Features
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Low‑power solar pump designed for long‑distance, high‑lift water delivery
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Proven design with nearly 40 years of field use
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Rotary vane positive‑displacement mechanism for consistent flow
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Forged brass, carbon‑graphite, and stainless steel construction
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NSF‑approved for drinking water applications
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Handles seawater and dissolved minerals
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Survives most freeze conditions
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Permanent‑magnet DC motor (AC models use low‑surge PM motor)
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Extremely low energy consumption for solar‑direct systems
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Wear parts last 5–10 years; 15–20 year overall life expectancy
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Detailed installation and service manual included
Filtration Requirement
“This pump cannot tolerate dirt, so water must be filtered clear.”
A proper filtration system is mandatory. Failure to use approved filtration voids the warranty.
If the water source is very dirty, consider a dirt‑tolerant model such as:
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SolarForce
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SunCentric
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Solaram
Solar‑Direct (PV‑Direct) Operation
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PV array must meet the PV Watts rating listed for each model
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Using the Dankoff DC Controller increases annual performance by ~30%
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Controller is required for reliable startup in low‑light conditions
Mechanical Characteristics
1300 Series (Models 1303–1322)
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Dimensions: 5 3/4" × 17 3/8"
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Fittings: 1/2" female
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Weight: 12 lbs
1400 Series (Models 1403–1408)
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Dimensions: 6 1/2" × 18 3/4"
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Fittings: 1/2" female
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Weight: 25 lbs
2500 Series (Models 2505–2507)
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Dimensions: 5 3/4" × 17 3/8"
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Fittings: 3/4" male
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Weight: 13 lbs
2600 Series (Models 2605–2607)
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Dimensions: 6 1/2" × 18 3/4"
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Fittings: 3/4" male
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Weight: 29 lbs
Performance Overview
The SlowPump is available in multiple model numbers, each optimized for different lift heights and flow rates. Performance varies by:
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Total lift (vertical + friction loss)
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Model number (1300, 1400, 2500, 2600 series)
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Voltage (12V, 24V, 48V DC; 115V AC)
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PV array wattage
General Performance Characteristics
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Flow ranges from 0.25–6.2 GPM depending on model and lift
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Maximum lift: up to ~450 ft
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PV wattage requirements: 40W to 675W depending on model and lift
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AC models available for inverted systems
(Your Shopify product page will not list every table row — customers choose the model based on your variant selector.)
Voltage Options (Variants)
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12V DC
-
24V DC
-
48V DC
-
115V AC (select models)
Dimensions & Weight
-
Varies by model series (see Mechanical Characteristics above)
Warranty
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1‑year manufacturer warranty
The Dankoff Solar SlowPump is a proven low‑power surface pump engineered for long‑distance, high‑lift water delivery in off‑grid environments. First introduced in 1983, it remains one of the most reliable solar‑direct pumping solutions available, with thousands of installations worldwide. Designed for shallow water sources and capable of pushing water up to 450 vertical feet, the SlowPump delivers dependable performance with extremely low energy requirements.
Built with a forged brass rotary vane mechanism and stainless steel/carbon‑graphite internals, the SlowPump is designed for long service life, easy maintenance, and consistent operation in remote systems. Wear parts typically last 5–10 years, with an overall life expectancy of 15–20 years before rebuild.
Key Features
-
Low‑power solar pump designed for long‑distance, high‑lift water delivery
-
Proven design with nearly 40 years of field use
-
Rotary vane positive‑displacement mechanism for consistent flow
-
Forged brass, carbon‑graphite, and stainless steel construction
-
NSF‑approved for drinking water applications
-
Handles seawater and dissolved minerals
-
Survives most freeze conditions
-
Permanent‑magnet DC motor (AC models use low‑surge PM motor)
-
Extremely low energy consumption for solar‑direct systems
-
Wear parts last 5–10 years; 15–20 year overall life expectancy
-
Detailed installation and service manual included
Filtration Requirement
“This pump cannot tolerate dirt, so water must be filtered clear.”
A proper filtration system is mandatory. Failure to use approved filtration voids the warranty.
If the water source is very dirty, consider a dirt‑tolerant model such as:
-
SolarForce
-
SunCentric
-
Solaram
Solar‑Direct (PV‑Direct) Operation
-
PV array must meet the PV Watts rating listed for each model
-
Using the Dankoff DC Controller increases annual performance by ~30%
-
Controller is required for reliable startup in low‑light conditions
Mechanical Characteristics
1300 Series (Models 1303–1322)
-
Dimensions: 5 3/4" × 17 3/8"
-
Fittings: 1/2" female
-
Weight: 12 lbs
1400 Series (Models 1403–1408)
-
Dimensions: 6 1/2" × 18 3/4"
-
Fittings: 1/2" female
-
Weight: 25 lbs
2500 Series (Models 2505–2507)
-
Dimensions: 5 3/4" × 17 3/8"
-
Fittings: 3/4" male
-
Weight: 13 lbs
2600 Series (Models 2605–2607)
-
Dimensions: 6 1/2" × 18 3/4"
-
Fittings: 3/4" male
-
Weight: 29 lbs
Performance Overview
The SlowPump is available in multiple model numbers, each optimized for different lift heights and flow rates. Performance varies by:
-
Total lift (vertical + friction loss)
-
Model number (1300, 1400, 2500, 2600 series)
-
Voltage (12V, 24V, 48V DC; 115V AC)
-
PV array wattage
General Performance Characteristics
-
Flow ranges from 0.25–6.2 GPM depending on model and lift
-
Maximum lift: up to ~450 ft
-
PV wattage requirements: 40W to 675W depending on model and lift
-
AC models available for inverted systems
(Your Shopify product page will not list every table row — customers choose the model based on your variant selector.)
Voltage Options (Variants)
-
12V DC
-
24V DC
-
48V DC
-
115V AC (select models)
Dimensions & Weight
-
Varies by model series (see Mechanical Characteristics above)
Warranty
-
1‑year manufacturer warranty
- Regular price
- $1,148.95
Estimated shipping time
Estimated shipping time
You can typically expect your items to arrive within 4–7 business days, depending on your location and product availability.
What is your Return Policy?
What is your Return Policy?
At Miles Off Grid, we want every customer to shop with confidence. If something doesn’t go as planned, we’ve made returns and refunds simple and fair. Here’s how it works:
1. Return Window
You can request a return within 30 days of receiving your order. Unfortunately, we’re unable to accept returns after that time frame.
2. Who Pays for Return Shipping?
- If your item arrives damaged, defective, or incorrect, we’ll cover the return shipping cost.
- If you’re returning an item because you changed your mind, you’ll be responsible for return shipping fees.
3. Damaged or Defective Items
Received something broken or not working properly? Contact us within 30 days. We’ll provide a prepaid return label and once the item is returned and inspected, we’ll issue either a full refund or a replacement—including any original shipping costs.
4. Changed Your Mind?
If you no longer want the item, you can return it within 30 days—as long as it's unused, in its original packaging, and in resellable condition. You’ll need to handle the return shipping, and once we receive and inspect it, we’ll refund the product cost (excluding shipping).
5. Refund Processing
Once we receive and approve your return, we’ll send a confirmation email and issue a refund to your original payment method within 7 business days. Please allow additional time for banks or credit card companies to process and reflect the refund.
If it’s been over 10 business days since your refund was approved and you still don’t see it, contact us at support@milesoffgrid.com and we’ll look into it immediately.
6. Restocking Fees
In some cases, a restocking fee may apply depending on the item and return reason. If applicable, we’ll clearly communicate this during your return request process.
