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The Dankoff Solar Force Piston Pump is the most efficient pump in the Dankoff lineup, engineered for long‑distance water delivery directly from a PV array — even in low‑light conditions. According to the manufacturer, it delivers “up to 75% better efficiency over centrifugal or AC pumps” and is specifically designed for regions with variable sunlight .

Built for extreme reliability, the Solar Force uses a rugged mechanical piston design with wear parts that typically last 5–10 years, and an overall life expectancy of 15–20 years before rebuild . It is dirt‑tolerant, dry‑run tolerant, and simple to maintain with common tools.

This pump is ideal for homesteads, off‑grid homes, livestock systems, irrigation, and long‑distance water transfer where efficiency and durability matter most.

Key Features

  • Ultra‑efficient piston pump — up to 75% more efficient than centrifugal or AC pumps

  • Runs directly from a PV array in low‑light conditions

  • Dirt‑tolerant and dry‑run tolerant

  • Wear parts last 5–10 years; pump life 15–20 years

  • AC version uses a low‑surge permanent magnet motor to reduce inverter and wire size requirements

  • Mechanical drive allows engine or hand‑lever backup

  • Includes illustrated installation & service manual

  • Surge tank included (not shown in photo)

Applications

  • Long‑distance water transfer

  • Off‑grid homesteads

  • Livestock watering

  • Irrigation

  • Pressurized household systems (with battery + pressure tank)

  • Solar‑direct pumping systems

Construction

From the spec sheet:

  • Cast iron body

  • Brass cylinder & valve seats

  • Leather cup piston seals

  • Neoprene valve seals

  • Oil‑bath crankcase

  • Gear (timing) belt drive on PV models

  • Standard V‑belt on battery (B) models

  • Permanent magnet DC motor

  • Pressure relief valve included

  • Surge tank included

Suction Capacity

  • Up to 25 ft vertical lift at sea level

  • Subtract 1 ft per 1,000 ft elevation

  • Intake piping:

    • 1" minimum for 3010 & 3020

    • 1¼" minimum for 3040

  • Best reliability when pump is close to the water source

Fittings

  • Intake: 1¼" FPT

  • Outlet: 1" FPT


Power System Requirements

  • PV‑direct systems require a PV array sized 20% above pump wattage

  • A linear current booster (pump controller) is required for solar‑direct operation

  • Solar tracker optional (increases daily yield 40–55% in summer)

  • Pressurized systems require:

    • Battery power

    • Pressure switch

    • Minimum 60‑gallon pressure tank (captive‑air)


Dimensions & Weight

  • 22" × 13" × 16" (pump only)

  • 26" total height with surge tank

  • Max weight: 80 lbs

  • Ships in 2–3 boxes

Available Voltages

  • 12V, 24V, 48V DC

  • 115V or 230V AC (50–60 Hz)

Warranty

  • 2‑year manufacturer warranty

Dankoff Solar Force Piston Pump

$3,379.00

The Dankoff Solar Force Piston Pump is the most efficient pump in the Dankoff lineup, engineered for long‑distance water delivery directly from a PV array — even in low‑light conditions. According to the manufacturer, it delivers “up to 75% better efficiency over centrifugal or AC pumps” and is specifically designed for regions with variable sunlight .

Built for extreme reliability, the Solar Force uses a rugged mechanical piston design with wear parts that typically last 5–10 years, and an overall life expectancy of 15–20 years before rebuild . It is dirt‑tolerant, dry‑run tolerant, and simple to maintain with common tools.

This pump is ideal for homesteads, off‑grid homes, livestock systems, irrigation, and long‑distance water transfer where efficiency and durability matter most.

Key Features

  • Ultra‑efficient piston pump — up to 75% more efficient than centrifugal or AC pumps

  • Runs directly from a PV array in low‑light conditions

  • Dirt‑tolerant and dry‑run tolerant

  • Wear parts last 5–10 years; pump life 15–20 years

  • AC version uses a low‑surge permanent magnet motor to reduce inverter and wire size requirements

  • Mechanical drive allows engine or hand‑lever backup

  • Includes illustrated installation & service manual

  • Surge tank included (not shown in photo)

Applications

  • Long‑distance water transfer

  • Off‑grid homesteads

  • Livestock watering

  • Irrigation

  • Pressurized household systems (with battery + pressure tank)

  • Solar‑direct pumping systems

Construction

From the spec sheet:

  • Cast iron body

  • Brass cylinder & valve seats

  • Leather cup piston seals

  • Neoprene valve seals

  • Oil‑bath crankcase

  • Gear (timing) belt drive on PV models

  • Standard V‑belt on battery (B) models

  • Permanent magnet DC motor

  • Pressure relief valve included

  • Surge tank included

Suction Capacity

  • Up to 25 ft vertical lift at sea level

  • Subtract 1 ft per 1,000 ft elevation

  • Intake piping:

    • 1" minimum for 3010 & 3020

    • 1¼" minimum for 3040

  • Best reliability when pump is close to the water source

Fittings

  • Intake: 1¼" FPT

  • Outlet: 1" FPT


Power System Requirements

  • PV‑direct systems require a PV array sized 20% above pump wattage

  • A linear current booster (pump controller) is required for solar‑direct operation

  • Solar tracker optional (increases daily yield 40–55% in summer)

  • Pressurized systems require:

    • Battery power

    • Pressure switch

    • Minimum 60‑gallon pressure tank (captive‑air)


Dimensions & Weight

  • 22" × 13" × 16" (pump only)

  • 26" total height with surge tank

  • Max weight: 80 lbs

  • Ships in 2–3 boxes

Available Voltages

  • 12V, 24V, 48V DC

  • 115V or 230V AC (50–60 Hz)

Warranty

  • 2‑year manufacturer warranty
$3,379.00

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?

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.

Product Description

The Dankoff Solar Force Piston Pump is the most efficient pump in the Dankoff lineup, engineered for long‑distance water delivery directly from a PV array — even in low‑light conditions. According to the manufacturer, it delivers “up to 75% better efficiency over centrifugal or AC pumps” and is specifically designed for regions with variable sunlight .

Built for extreme reliability, the Solar Force uses a rugged mechanical piston design with wear parts that typically last 5–10 years, and an overall life expectancy of 15–20 years before rebuild . It is dirt‑tolerant, dry‑run tolerant, and simple to maintain with common tools.

This pump is ideal for homesteads, off‑grid homes, livestock systems, irrigation, and long‑distance water transfer where efficiency and durability matter most.

Key Features

  • Ultra‑efficient piston pump — up to 75% more efficient than centrifugal or AC pumps

  • Runs directly from a PV array in low‑light conditions

  • Dirt‑tolerant and dry‑run tolerant

  • Wear parts last 5–10 years; pump life 15–20 years

  • AC version uses a low‑surge permanent magnet motor to reduce inverter and wire size requirements

  • Mechanical drive allows engine or hand‑lever backup

  • Includes illustrated installation & service manual

  • Surge tank included (not shown in photo)

Applications

  • Long‑distance water transfer

  • Off‑grid homesteads

  • Livestock watering

  • Irrigation

  • Pressurized household systems (with battery + pressure tank)

  • Solar‑direct pumping systems

Construction

From the spec sheet:

  • Cast iron body

  • Brass cylinder & valve seats

  • Leather cup piston seals

  • Neoprene valve seals

  • Oil‑bath crankcase

  • Gear (timing) belt drive on PV models

  • Standard V‑belt on battery (B) models

  • Permanent magnet DC motor

  • Pressure relief valve included

  • Surge tank included

Suction Capacity

  • Up to 25 ft vertical lift at sea level

  • Subtract 1 ft per 1,000 ft elevation

  • Intake piping:

    • 1" minimum for 3010 & 3020

    • 1¼" minimum for 3040

  • Best reliability when pump is close to the water source

Fittings

  • Intake: 1¼" FPT

  • Outlet: 1" FPT


Power System Requirements

  • PV‑direct systems require a PV array sized 20% above pump wattage

  • A linear current booster (pump controller) is required for solar‑direct operation

  • Solar tracker optional (increases daily yield 40–55% in summer)

  • Pressurized systems require:

    • Battery power

    • Pressure switch

    • Minimum 60‑gallon pressure tank (captive‑air)


Dimensions & Weight

  • 22" × 13" × 16" (pump only)

  • 26" total height with surge tank

  • Max weight: 80 lbs

  • Ships in 2–3 boxes

Available Voltages

  • 12V, 24V, 48V DC

  • 115V or 230V AC (50–60 Hz)

Warranty

  • 2‑year manufacturer warranty

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