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About
A direct replacement pumphead engineered to mount to standard NEMA 56C motors. Built for fast, quiet, and reliable heavy oil transfer.
- Flow Rate vs. RPM: 12 GPM @ 1800 RPM | 20 GPM @ 2850 RPM | 25 GPM @ 3450 RPM.
- Direct Fit: Flanged for NEMA 56C standard electric motors.
- Shaft Size: Features a 14mm keyed shaft (requires appropriate coupler for your motor).
- Smooth Operation: Large displacement helical-cut steel gears for fast and quiet operation.
- Ready to Plumb: 1" NPT ports (Includes two 1.25" hose barbs).
The ultimate cast-iron replacement pumphead. Engineered to move heavy gear oils, waste motor oil, and diesel, built specifically to mount to standard NEMA 56C electric motors.
In a true heavy-duty fluid transfer system, your electric motor is the expensive workhorse that should last for years, while the pumphead inevitably takes the abuse of moving heavy, abrasive oils. When your pumphead eventually wears out, there is no need to buy an entire new system. The W2083 is a cost-effective, direct-replacement pumphead designed for close-coupled pumps with NEMA 56C motors, getting you back to pumping at peak efficiency in minutes.
Key Features & Benefits
- Scalable Performance: The flow rate of this pumphead scales perfectly with your motor's speed. Pair it with a 3450 RPM motor for high-speed 25 GPM transfer, a 2850 RPM motor for 20 GPM, or an 1800 RPM motor for high-torque 12 GPM transfer.
- Fast & Quiet Operation: Equipped with large displacement, helical-cut steel gears that provide a nearly pulseless flow, drastically reducing vibration and noise during heavy transfer jobs.
- Universal Fit: Designed as a direct bolt-on fit for NEMA 56C standard electric motors. The pumphead features a 14mm keyed shaft.
- Self-Priming: Creates strong suction lift right out of the box, saving you time and hassle.
Technical Specifications
| Feature | Specification |
|---|---|
| Oil Viscosity | Fuel Oil to Heavy Gear Oil (including WMO, WVO, Diesel) |
| Flow Rate vs. RPM |
12 GPM @ 1800 RPM 20 GPM @ 2850 RPM (50Hz) 25 GPM @ 3450 RPM |
| Pumphead Material | Heavy-Duty Cast Iron |
| Gears | Large Displacement Helical-Cut Steel |
| Shaft Size | 14mm Keyed Shaft |
| Port Size | 1" NPT Inlet / Outlet |
| Motor Compatibility | NEMA 56C Frame |
What’s Included in the Box
- W2083 Cast-Iron Gear Pumphead (NEMA 56C Mount)
- Two (2) 1" NPT to 1.25" Hose Barbs
Note: Motor, shaft coupler, handle, base, and hoses are NOT included.
Motor Sizing & Fluid Viscosity Guide
| Motor Speed (Flow Rate) | Fluid Viscosity / Type | Minimum HP Required |
|---|---|---|
| 1800 RPM (12 GPM) | Cold Motor Oil, Waste Oil (WMO) | 3/4 HP |
| 3450 RPM (25 GPM) | Light Oils (Diesel, Warm ATF, Hydraulic) | 3/4 HP |
| 3450 RPM (25 GPM) | Heavier Oils (Cold Motor Oil, Heavy Gear Oil) | 1 HP to 2 HP |
⚠ Important Operating Notes
- Oil Lubricated Only: The internal gears rely on the fluid you are pumping for lubrication. THIS PUMP WILL NOT WORK WITH WATER. Do not pump water, gasoline, or highly flammable solvents.
FAQs
Product & Usage
1. Are Goldstream pumps built for professional use?
Yes. Every Monster Series and Industrial Series pump is built for continuous duty, marine environments, and the kind of fluid-transfer work that breaks cheaper pumps.
2. Can I use a Goldstream pump for my home project?
Absolutely. Our Monster Series is portable and self-priming — no tuning or tricks needed. Plug it in and move fluid.
3. Can Goldstream pumps be used in marine or outdoor conditions?
Yes. Goldstream pumps are tested in real-world marine, biofuel, and industrial conditions — heat, humidity, and long runtimes.
Maintenance & Accessories
1. What maintenance does a Goldstream pump need?
Flush with a compatible fluid after each use and keep seals clean. That's it — our gear pumps are built to run with minimal fuss.
2. Can I buy replacement parts?
Yes. Seals, impellers, gaskets, and full rebuild kits are in stock at the Pump Parts collection.
3. Do you provide installation guides?
Every pump ships with a printed install guide. Digital copies and install videos are linked from each product page.
Warranty & Guarantee
1. Do Goldstream pumps come with a warranty?
Every Goldstream pump is backed by our 1-year limited warranty against defects in materials and workmanship, when used with approved oil-based fluids.
2. How do I register my pump for warranty coverage?
Keep your order confirmation email — it acts as proof of purchase. You can also register your serial number in your account for faster service.
3. What does the warranty cover?
Defects in materials and workmanship under normal use — no fine print, no games. Wear items (seals, gaskets) are covered by a separate 1-year warranty.
4. What if my pump fails?
Call us. We'll get you a replacement or rebuild fast — usually the same week.
Purchasing & Support
1. How fast is shipping and delivery?
Most orders ship same-day from Charleston, SC, with delivery in 2–5 business days anywhere in the continental US.
2. Do you offer bulk or corporate purchasing options?
Yes. Goldstream offers dealer and fleet pricing — call us at (843) 972-4211 or use the contact form.
3. How can I reach a real technician?
Call (843) 972-4211 Mon–Fri, 8am–3pm EST, or email support@goldstreampumps.com. No call centers.
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