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About
The ultimate heavy-duty transfer pump for heavy gear oils, waste motor oil, and diesel. Built for life, not the landfill.
- Flow Rate: True 18 GPM flow capacity.
- Premium Motor: Custom 1.5 HP US-Made Baldor Motor (120V).
- Built to Last: Fully serviceable cast-iron pump head with high-temp Viton seals.
Features
- Self-Priming: Suction height of 15ft.
- Pressure Relief: Integrated bypass valve.
- Solid Cast Iron Construction: Carbon steel gears.
- High Quality: 1.5HP motor that can run on 120V/220V.
How They Work
Twin rotary gears are set in the pump body. One is active, the other is passive. The active gear drives the passive gear to rotate when the pump works. As gear teeth unite then sever, a vacuum/suction is created in the pre-chamber. Liquid fills the gear cavities and is pushed at high pressure out from the chamber.
Safety Relief Valve
The safety valve is set from the factory. The safety valve is automatically opened when the pump or output piping receive excess pressure. Once the valve opens, pressure and oil are routed back to the inlet chamber and re-circulated through the pumphead. Not for use with corrosive liquids. Oil Only!
Technical Specifications
| Performance Metric | Specification |
|---|---|
| Flow Rate | 18 GPM @ 1800 RPM |
| Pressure Relief | 0.33 Mpa |
| Shaft Size | 20mm |
| Port Size | 1" NPT |
| Motor Output | 1.5HP (120/220V Compatible) |
Note: Accessories and hoses are sold separately.
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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