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Stationary transfer pump for moving thick oil fast. Pumps are Self Priming. Pumps are horizontal rotary pumps. It consists of pump body, baseplate, gear, bearing seat and safety valve , bearing, seal etc. Body and bearing seat are made of cast iron. Gear is made of high grade carbon steel. Viton Seals are standard. Gear can be made of bronze or stainless material as special request. Flexible coupling is connected with motor drive and pump shaft.
Twin rotary gears are set in the pump body. One is active, the other is passive. Active gear drives passive gear to rotate when pump works. As gear teeth unite then sever, vacuum/suction is created in pre-chamber. Liquid fills the gear cavities and is pushed at high pressure out from the chamber.
Safety valve is set from factory. Safety valve is automatically opened when pump or output piping receive excess pressure. Once valve opens, pressure and oil is routed back to the inlet chamber and re-circulated through the pumphead. Valve is adjustable.
Not for use with corrosive liquids. Oil Only!
Find quick answers to common questions
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.
Absolutely. Our Monster Series is portable and self-priming — no tuning or tricks needed. Plug it in and move fluid.
Yes. Goldstream pumps are tested in real-world marine, biofuel, and industrial conditions — heat, humidity, and long runtimes.
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.
Yes. Seals, impellers, gaskets, and full rebuild kits are in stock at the Pump Parts collection.
Every pump ships with a printed install guide. Digital copies and install videos are linked from each product page.
Every Goldstream pump is backed by our 1-year limited warranty against defects in materials and workmanship, when used with approved oil-based fluids.
Keep your order confirmation email — it acts as proof of purchase. You can also register your serial number in your account for faster service.
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.
Call us. We'll get you a replacement or rebuild fast — usually the same week.
Most orders ship same-day from Charleston, SC, with delivery in 2–5 business days anywhere in the continental US.
Yes. Goldstream offers dealer and fleet pricing — call us at (843) 972-4211 or use the contact form.
Call (843) 972-4211 Mon–Fri, 8am–3pm EST, or email support@goldstreampumps.com. No call centers.
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