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Samson 552010 DF50 1/2
Samson

Samson 552010 DF50 1/2" Aluminum/Acetal Fluid Pump

Double-diaphragm aluminum pump rated at 14 GPM for reliable, direct-drive transfer of water-based fluids through 1/2" NPTF plumbing.

$616.77*
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

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Overview

The Samson 552010 DF50 addresses a specific and common facilities need: efficient, direct-drive transfer of water-based maintenance fluids — antifreeze, windshield wash, lubricants, and waste oil — through a compact, plumbing-ready pump that can be permanently installed or used in a portable transfer rig. The double-diaphragm design using TPE diaphragms and Acetal ball checks is matched to this fluid profile, providing the chemical resistance needed for long service intervals without the cost overhead of stainless or PTFE-wetted alternatives. At 14 GPM maximum flow through 1/2" NPTF ports, the pump handles drum-to-reservoir and bulk container transfer operations at a rate appropriate for maintenance bay and fleet service environments.

The aluminum body keeps the pump light enough for mobile deployment while offering adequate structural integrity for continuous fixed installations. The 1/2" NPTF inlet and outlet ports connect directly to standard plumbing infrastructure without adapters in most configurations — a practical advantage during installation that reduces leak points in the fluid circuit. From a maintenance standpoint, the double-diaphragm architecture is a serviceable design: diaphragms and ball checks are the primary wear components and can be replaced to extend pump service life, though procurement teams should confirm consumable part availability and pricing with Samson before committing this unit to critical service paths. For standard fluid transfer operations within the specified compatibility range, the DF50 provides a straightforward, durable solution at a competitive price point.

Key Features

Diaphragm Pump

14 Gallons/Minute

1/2" NPTF inlet/outlet ports

For water based fluids like antifreeze, win shield wash, lubricants and waste oil

Specifications

Pump Type
Diaphragm Pump
Flow Rate
14 Gallons/Minute
Inlet/Outlet Port Size
1/2" NPTF
Housing Material
Aluminum/Acetal
Fluid Compatibility
Water based fluids like antifreeze, win shield wash, lubricants and waste oil

Pros & Cons

👍 Pros

  • Double-diaphragm design provides inherent pulse dampening relative to single-diaphragm alternatives at this flow rate.
  • Aluminum body offers a favorable strength-to-weight ratio for portable or wall-mounted fluid transfer installations.
  • 1/2" NPTF ports are industry-standard, enabling compatibility with off-the-shelf plumbing fittings without adapters in most installations.
  • Acetal ball checks are chemically resistant to the specified water-based fluid types and maintain seating integrity over high cycle counts.
  • 14 GPM maximum flow rate is adequate for rapid drum or tank transfer operations in maintenance and facilities applications.

👎 Cons

  • No published NIST-traceable calibration data or flow accuracy specification — not suitable for metered dispensing applications requiring documented measurement tolerance.
  • Aluminum body limits compatibility with certain aggressive fluid chemistries; stainless steel alternatives are available for broader chemical resistance.
  • No manufacturer-published self-priming head specification in available documentation, complicating installation planning.
  • Replacement diaphragm and ball check availability and part numbers are not documented in the listing — verify consumable sourcing before procurement for critical service applications.
  • Maximum flow rate of 14 GPM may be insufficient for high-volume bulk transfer scenarios requiring 20+ GPM.

Frequently Asked Questions

The TPE diaphragms and Acetal ball checks are specified for water-based fluids including antifreeze, windshield wash fluid, lubricants, and waste oil. TPE offers moderate chemical resistance suitable for these applications. Compatibility with solvents, concentrated acids, or petroleum distillates beyond waste oil is not specified — consult the manufacturer's chemical compatibility chart before deploying with fluids outside this list.
The DF50 is rated at a maximum of 14 gallons per minute. Maximum flow rate is achieved under optimal head pressure and line conditions — actual throughput in service will vary based on inlet head, outlet back pressure, fluid viscosity, and line diameter. Factor in a realistic service derating when sizing this pump for a specific application.
Both inlet and outlet ports are 1/2" NPTF (National Pipe Taper Fuel) — a dryseal tapered thread standard. NPTF fittings are directly compatible with NPT fittings in most configurations, but verify thread engagement and use appropriate sealant or PTFE tape to ensure leak-free joints at the connection points.
Aluminum is compatible with the specified water-based fluids at normal operating conditions. However, long-term exposure to high-pH or chlorinated fluids may accelerate oxidation. For facilities using treated water or chemical additives in the fluid stream, verify the specific pH and additive compatibility against aluminum's known limits before continuous-service deployment.
Double-diaphragm pumps of this design class are generally self-priming; however, Samson does not publish a specific priming head specification for the DF50 in the available documentation. Confirm installation orientation and priming capability with the manufacturer's technical documentation before final plumbing layout.

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